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Merge branch 'master' of https://github.com/eugenp/tutorials into BAEL-10982

This commit is contained in:
amit2103 2019-03-23 17:38:00 +05:30
parent 8f7bc84798 4372c6fa1c
commit b28e7741e3
64 changed files with 1942 additions and 51 deletions
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37
core-groovy/src/main/groovy/com/baeldung/Person.groovy Normal file
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@ -0,0 +1,37 @@
package com.baeldung
class Person {
private String firstname
private String lastname
private Integer age
Person(String firstname, String lastname, Integer age) {
this.firstname = firstname
this.lastname = lastname
this.age = age
}
String getFirstname() {
return firstname
}
void setFirstname(String firstname) {
this.firstname = firstname
}
String getLastname() {
return lastname
}
void setLastname(String lastname) {
this.lastname = lastname
}
Integer getAge() {
return age
}
void setAge(Integer age) {
this.age = age
}
}

8
core-groovy/src/test/groovy/com/baeldung/lists/ListTest.groovy
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@ -129,13 +129,13 @@ class ListTest{
assertTrue(filterList.findAll{it > 3} == [4, 5, 6, 76])
assertTrue(filterList.findAll{ it instanceof Number} == [2, 1, 3, 4, 5, 6, 76])
assertTrue(filterList.grep( Number )== [2, 1, 3, 4, 5, 6, 76])
assertTrue(filterList.grep{ it> 6 }== [76])
def conditionList = [2, 1, 3, 4, 5, 6, 76]
assertFalse(conditionList.every{ it < 6})
assertTrue(conditionList.any{ it%2 == 0})
@ -165,7 +165,7 @@ class ListTest{
def strList = ["na", "ppp", "as"]
assertTrue(strList.max() == "ppp")
Comparator minc = {a,b -> a == b? 0: a < b? -1 : 1}
def numberList = [3, 2, 0, 7]
assertTrue(numberList.min(minc) == 0)

58
core-groovy/src/test/groovy/com/baeldung/lists/ListUnitTest.groovy Normal file
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@ -0,0 +1,58 @@
package com.baeldung.lists
import com.baeldung.Person
import org.junit.Test
import static org.junit.Assert.*
class ListUnitTest {
private final personList = [
new Person("Regina", "Fitzpatrick", 25),
new Person("Abagail", "Ballard", 26),
new Person("Lucian", "Walter", 30),
]
@Test
void whenListContainsElement_thenCheckReturnsTrue() {
def list = ['a', 'b', 'c']
assertTrue(list.indexOf('a') > -1)
assertTrue(list.contains('a'))
}
@Test
void whenListContainsElement_thenCheckWithMembershipOperatorReturnsTrue() {
def list = ['a', 'b', 'c']
assertTrue('a' in list)
}
@Test
void givenListOfPerson_whenUsingStreamMatching_thenShouldEvaluateList() {
assertTrue(personList.stream().anyMatch {it.age > 20})
assertFalse(personList.stream().allMatch {it.age < 30})
}
@Test
void givenListOfPerson_whenUsingCollectionMatching_thenShouldEvaluateList() {
assertTrue(personList.any {it.age > 20})
assertFalse(personList.every {it.age < 30})
}
@Test
void givenListOfPerson_whenUsingStreamFind_thenShouldReturnMatchingElements() {
assertTrue(personList.stream().filter {it.age > 20}.findAny().isPresent())
assertFalse(personList.stream().filter {it.age > 30}.findAny().isPresent())
assertTrue(personList.stream().filter {it.age > 20}.findAll().size() == 3)
assertTrue(personList.stream().filter {it.age > 30}.findAll().isEmpty())
}
@Test
void givenListOfPerson_whenUsingCollectionFind_thenShouldReturnMatchingElements() {
assertNotNull(personList.find {it.age > 20})
assertNull(personList.find {it.age > 30})
assertTrue(personList.findAll {it.age > 20}.size() == 3)
assertTrue(personList.findAll {it.age > 30}.isEmpty())
}
}

73
core-groovy/src/test/groovy/com/baeldung/map/MapUnitTest.groovy
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@ -1,10 +1,18 @@
package com.baeldung.map
import static org.junit.Assert.*
import com.baeldung.Person
import org.junit.Test
import static org.junit.Assert.*
class MapUnitTest {
private final personMap = [
Regina : new Person("Regina", "Fitzpatrick", 25),
Abagail: new Person("Abagail", "Ballard", 26),
Lucian : new Person("Lucian", "Walter", 30)
]
@Test
void whenUsingEach_thenMapIsIterated() {
def map = [
@ -63,7 +71,7 @@ class MapUnitTest {
'FF6347' : 'Tomato',
'FF4500' : 'Orange Red'
]
map.eachWithIndex { key, val, index ->
def indent = ((index == 0 || index % 2 == 0) ? " " : "")
println "$indent Hex Code: $key = Color Name: $val"
@ -82,4 +90,65 @@ class MapUnitTest {
println "Hex Code: $entry.key = Color Name: $entry.value"
}
}
@Test
void whenMapContainsKeyElement_thenCheckReturnsTrue() {
def map = [a: 'd', b: 'e', c: 'f']
assertTrue(map.containsKey('a'))
assertFalse(map.containsKey('e'))
assertTrue(map.containsValue('e'))
}
@Test
void whenMapContainsKeyElement_thenCheckByMembershipReturnsTrue() {
def map = [a: 'd', b: 'e', c: 'f']
assertTrue('a' in map)
assertFalse('f' in map)
}
@Test
void whenMapContainsFalseBooleanValues_thenCheckReturnsFalse() {
def map = [a: true, b: false, c: null]
assertTrue(map.containsKey('b'))
assertTrue('a' in map)
assertFalse('b' in map)
assertFalse('c' in map)
}
@Test
void givenMapOfPerson_whenUsingStreamMatching_thenShouldEvaluateMap() {
assertTrue(personMap.keySet().stream().anyMatch {it == "Regina"})
assertFalse(personMap.keySet().stream().allMatch {it == "Albert"})
assertFalse(personMap.values().stream().allMatch {it.age < 30})
assertTrue(personMap.entrySet().stream().anyMatch {it.key == "Abagail" && it.value.lastname == "Ballard"})
}
@Test
void givenMapOfPerson_whenUsingCollectionMatching_thenShouldEvaluateMap() {
assertTrue(personMap.keySet().any {it == "Regina"})
assertFalse(personMap.keySet().every {it == "Albert"})
assertFalse(personMap.values().every {it.age < 30})
assertTrue(personMap.any {firstname, person -> firstname == "Abagail" && person.lastname == "Ballard"})
}
@Test
void givenMapOfPerson_whenUsingCollectionFind_thenShouldReturnElements() {
assertNotNull(personMap.find {it.key == "Abagail" && it.value.lastname == "Ballard"})
assertTrue(personMap.findAll {it.value.age > 20}.size() == 3)
}
@Test
void givenMapOfPerson_whenUsingStreamFind_thenShouldReturnElements() {
assertTrue(
personMap.entrySet().stream()
.filter {it.key == "Abagail" && it.value.lastname == "Ballard"}
.findAny().isPresent())
assertTrue(
personMap.entrySet().stream()
.filter {it.value.age > 20}
.findAll().size() == 3)
}
}

16
core-groovy/src/test/groovy/com/baeldung/set/SetUnitTest.groovy Normal file
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@ -0,0 +1,16 @@
package com.baeldung.set
import org.junit.Test
import static org.junit.Assert.assertTrue
class SetUnitTest {
@Test
void whenSetContainsElement_thenCheckReturnsTrue() {
def set = ['a', 'b', 'c'] as Set
assertTrue(set.contains('a'))
assertTrue('a' in set)
}
}

12
core-java-11/src/modules/jlinkModule/com/baeldung/jlink/HelloWorld.java Normal file
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@ -0,0 +1,12 @@
package com.baeldung.jlink;
import java.util.logging.Logger;
public class HelloWorld {
private static final Logger LOG = Logger.getLogger(HelloWorld.class.getName());
public static void main(String[] args) {
LOG.info("Hello World!");
}
}

3
core-java-11/src/modules/jlinkModule/module-info.java Normal file
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@ -0,0 +1,3 @@
module jlinkModule {
requires java.logging;
}

48
core-java-12/pom.xml Normal file
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@ -0,0 +1,48 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>core-java-12</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>core-java-12</name>
<packaging>jar</packaging>
<url>http://maven.apache.org</url>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>${maven.compiler.source.version}</source>
<target>${maven.compiler.target.version}</target>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<maven.compiler.source.version>12</maven.compiler.source.version>
<maven.compiler.target.version>12</maven.compiler.target.version>
<assertj.version>3.6.1</assertj.version>
</properties>
</project>

77
core-java-12/src/test/java/com/baeldung/collectors/CollectorsUnitTest.java Normal file
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@ -0,0 +1,77 @@
package com.baeldung.collectors;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import org.junit.Test;
import static java.util.stream.Collectors.maxBy;
import static java.util.stream.Collectors.minBy;
import static java.util.stream.Collectors.teeing;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Unit tests for collectors additions in Java 12.
*/
public class CollectorsUnitTest {
@Test
public void whenTeeing_ItShouldCombineTheResultsAsExpected() {
List<Integer> numbers = Arrays.asList(42, 4, 2, 24);
Range range = numbers.stream()
.collect(teeing(
minBy(Integer::compareTo),
maxBy(Integer::compareTo),
(min, max) -> new Range(min.orElse(null), max.orElse(null))
));
assertThat(range).isEqualTo(new Range(2, 42));
}
/**
* Represents a closed range of numbers between {@link #min} and
* {@link #max}, both inclusive.
*/
private static class Range {
private final Integer min;
private final Integer max;
Range(Integer min, Integer max) {
this.min = min;
this.max = max;
}
Integer getMin() {
return min;
}
Integer getMax() {
return max;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Range range = (Range) o;
return Objects.equals(getMin(), range.getMin()) &&
Objects.equals(getMax(), range.getMax());
}
@Override
public int hashCode() {
return Objects.hash(getMin(), getMax());
}
@Override
public String toString() {
return "Range{" +
"min=" + min +
", max=" + max +
'}';
}
}
}

35
core-java-8/src/test/java/com/baeldung/java8/Java8SortUnitTest.java
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@ -124,11 +124,44 @@ public class Java8SortUnitTest {
@Test
public final void givenStreamCustomOrdering_whenSortingEntitiesByName_thenCorrectlySorted() {
final List<Human> humans = Lists.newArrayList(new Human("Sarah", 10), new Human("Jack", 12));
final Comparator<Human> nameComparator = (h1, h2) -> h1.getName().compareTo(h2.getName());
final List<Human> sortedHumans = humans.stream().sorted(nameComparator).collect(Collectors.toList());
Assert.assertThat(sortedHumans.get(0), equalTo(new Human("Jack", 12)));
}
@Test
public final void givenStreamComparatorOrdering_whenSortingEntitiesByName_thenCorrectlySorted() {
final List<Human> humans = Lists.newArrayList(new Human("Sarah", 10), new Human("Jack", 12));
final List<Human> sortedHumans = humans.stream().sorted(Comparator.comparing(Human::getName)).collect(Collectors.toList());
Assert.assertThat(sortedHumans.get(0), equalTo(new Human("Jack", 12)));
}
@Test
public final void givenStreamNaturalOrdering_whenSortingEntitiesByNameReversed_thenCorrectlySorted() {
final List<String> letters = Lists.newArrayList("B", "A", "C");
final List<String> reverseSortedLetters = letters.stream().sorted(Comparator.reverseOrder()).collect(Collectors.toList());
Assert.assertThat(reverseSortedLetters.get(0), equalTo("C"));
}
@Test
public final void givenStreamCustomOrdering_whenSortingEntitiesByNameReversed_thenCorrectlySorted() {
final List<Human> humans = Lists.newArrayList(new Human("Sarah", 10), new Human("Jack", 12));
final Comparator<Human> reverseNameComparator = (h1, h2) -> h2.getName().compareTo(h1.getName());
final List<Human> reverseSortedHumans = humans.stream().sorted(reverseNameComparator).collect(Collectors.toList());
Assert.assertThat(reverseSortedHumans.get(0), equalTo(new Human("Sarah", 10)));
}
@Test
public final void givenStreamComparatorOrdering_whenSortingEntitiesByNameReversed_thenCorrectlySorted() {
final List<Human> humans = Lists.newArrayList(new Human("Sarah", 10), new Human("Jack", 12));
final List<Human> reverseSortedHumans = humans.stream().sorted(Comparator.comparing(Human::getName, Comparator.reverseOrder())).collect(Collectors.toList());
Assert.assertThat(reverseSortedHumans.get(0), equalTo(new Human("Sarah", 10)));
}
}

29
core-java-networking/src/main/java/com/baeldung/socket/read/Client.java Normal file
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@ -0,0 +1,29 @@
package com.baeldung.socket.read;
import java.net.*;
import java.nio.charset.StandardCharsets;
import java.io.*;
public class Client {
public void runClient(String ip, int port) {
try {
Socket socket = new Socket(ip, port);
System.out.println("Connected to server ...");
DataInputStream in = new DataInputStream(System.in);
DataOutputStream out = new DataOutputStream(socket.getOutputStream());
char type = 's'; // s for string
int length = 29;
String data = "This is a string of length 29";
byte[] dataInBytes = data.getBytes(StandardCharsets.UTF_8);
//Sending data in TLV format
out.writeChar(type);
out.writeInt(length);
out.write(dataInBytes);
} catch (IOException e) {
e.printStackTrace();
}
}
}

49
core-java-networking/src/main/java/com/baeldung/socket/read/Server.java Normal file
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@ -0,0 +1,49 @@
package com.baeldung.socket.read;
import java.net.*;
import java.nio.charset.StandardCharsets;
import java.io.*;
public class Server {
public void runServer(int port) {
//Start the server and wait for connection
try {
ServerSocket server = new ServerSocket(port);
System.out.println("Server Started. Waiting for connection ...");
Socket socket = server.accept();
System.out.println("Got connection from client.");
//Get input stream from socket variable and convert the same to DataInputStream
DataInputStream in = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
//Read type and length of data
char dataType = in.readChar();
int length = in.readInt();
System.out.println("Type : "+dataType);
System.out.println("Lenght :"+length);
if(dataType == 's') {
//Read String data in bytes
byte[] messageByte = new byte[length];
boolean end = false;
StringBuilder dataString = new StringBuilder(length);
int totalBytesRead = 0;
//We need to run while loop, to read all data in that stream
while(!end) {
int currentBytesRead = in.read(messageByte);
totalBytesRead = currentBytesRead + totalBytesRead;
if(totalBytesRead <= length) {
dataString.append(new String(messageByte,0,currentBytesRead,StandardCharsets.UTF_8));
} else {
dataString.append(new String(messageByte,0,length - totalBytesRead + currentBytesRead,StandardCharsets.UTF_8));
}
if(dataString.length()>=length) {
end = true;
}
}
System.out.println("Read "+length+" bytes of message from client. Message = "+dataString);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

37
core-java-networking/src/test/java/com/baeldung/socket/read/SocketReadAllDataLiveTest.java Normal file
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@ -0,0 +1,37 @@
package com.baeldung.socket.read;
import java.util.concurrent.TimeUnit;
import org.junit.jupiter.api.Test;
public class SocketReadAllDataLiveTest {
@Test
public void givenServerAndClient_whenClientSendsAndServerReceivesData_thenCorrect() {
//Run server in new thread
Runnable runnable1 = () -> { runServer(); };
Thread thread1 = new Thread(runnable1);
thread1.start();
//Wait for 10 seconds
try {
TimeUnit.SECONDS.sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
}
//Run client in a new thread
Runnable runnable2 = () -> { runClient(); };
Thread thread2 = new Thread(runnable2);
thread2.start();
}
public static void runServer() {
//Run Server
Server server = new Server();
server.runServer(5555);
}
public static void runClient() {
//Run Client
Client client = new Client();
client.runClient("127.0.0.1", 5555);
}
}

25
core-kotlin-2/src/main/kotlin/com/baeldung/scope/ScopeFunctions.kt Normal file
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@ -0,0 +1,25 @@
package com.baeldung.scope
data class Student(var studentId: String = "", var name: String = "", var surname: String = "") {
}
data class Teacher(var teacherId: Int = 0, var name: String = "", var surname: String = "") {
fun setId(anId: Int): Teacher = apply { teacherId = anId }
fun setName(aName: String): Teacher = apply { name = aName }
fun setSurname(aSurname: String): Teacher = apply { surname = aSurname }
}
data class Headers(val headerInfo: String)
data class Response(val headers: Headers)
data class RestClient(val url: String) {
fun getResponse() = Response(Headers("some header info"))
}
data class BankAccount(val id: Int) {
fun checkAuthorization(username: String) = Unit
fun addPayee(payee: String) = Unit
fun makePayment(paymentDetails: String) = Unit
}

2
core-kotlin-2/src/test/kotlin/com/baeldung/annotations/ValidationTest.kt
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@ -4,7 +4,7 @@ import org.junit.Test
import kotlin.test.assertTrue
import kotlin.test.assertFalse
class ValidationUnitTest {
class ValidationTest {
@Test
fun whenAmountIsOneAndNameIsAlice_thenTrue() {

42
core-kotlin-2/src/test/kotlin/com/baeldung/annotations/ValidationUnitTest.kt
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@ -1,42 +0,0 @@
package com.baeldung.annotations
import org.junit.jupiter.api.Assertions.assertTrue
import org.junit.jupiter.api.Assertions.assertFalse
import org.junit.jupiter.api.Test
class ValidationUnitTest {
@Test
fun whenAmountIsOneAndNameIsAlice_thenTrue() {
assertTrue(Validator().isValid(Item(1f, "Alice")))
}
@Test
fun whenAmountIsOneAndNameIsBob_thenTrue() {
assertTrue(Validator().isValid(Item(1f, "Bob")))
}
@Test
fun whenAmountIsMinusOneAndNameIsAlice_thenFalse() {
assertFalse(Validator().isValid(Item(-1f, "Alice")))
}
@Test
fun whenAmountIsMinusOneAndNameIsBob_thenFalse() {
assertFalse(Validator().isValid(Item(-1f, "Bob")))
}
@Test
fun whenAmountIsOneAndNameIsTom_thenFalse() {
assertFalse(Validator().isValid(Item(1f, "Tom")))
}
@Test
fun whenAmountIsMinusOneAndNameIsTom_thenFalse() {
assertFalse(Validator().isValid(Item(-1f, "Tom")))
}
}

143
core-kotlin-2/src/test/kotlin/com/baeldung/scope/ScopeFunctionsUnitTest.kt Normal file
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@ -0,0 +1,143 @@
package com.baeldung.scope
import org.junit.Test
import kotlin.test.assertTrue
class ScopeFunctionsUnitTest {
class Logger {
var called : Boolean = false
fun info(message: String) {
called = true
}
fun wasCalled() = called
}
@Test
fun shouldTransformWhenLetFunctionUsed() {
val stringBuider = StringBuilder()
val numberOfCharacters = stringBuider.let {
it.append("This is a transformation function.")
it.append("It takes a StringBuilder instance and returns the number of characters in the generated String")
it.length
}
assertTrue {
numberOfCharacters == 128
}
}
@Test
fun shouldHandleNullabilityWhenLetFunctionUsed() {
val message: String? = "hello there!"
val charactersInMessage = message?.let {
"At this point is safe to reference the variable. Let's print the message: $it"
} ?: "default value"
assertTrue {
charactersInMessage.equals("At this point is safe to reference the variable. Let's print the message: hello there!")
}
val aNullMessage = null
val thisIsNull = aNullMessage?.let {
"At this point it would be safe to reference the variable. But it will not really happen because it is null. Let's reference: $it"
} ?: "default value"
assertTrue {
thisIsNull.equals("default value")
}
}
@Test
fun shouldInitializeObjectWhenUsingApply() {
val aStudent = Student().apply {
studentId = "1234567"
name = "Mary"
surname = "Smith"
}
assertTrue {
aStudent.name.equals("Mary")
}
}
@Test
fun shouldAllowBuilderStyleObjectDesignWhenApplyUsedInClassMethods() {
val teacher = Teacher()
.setId(1000)
.setName("Martha")
.setSurname("Spector")
assertTrue {
teacher.surname.equals("Spector")
}
}
@Test
fun shouldAllowSideEffectWhenUsingAlso() {
val restClient = RestClient("http://www.someurl.com")
val logger = Logger()
val headers = restClient
.getResponse()
.also { logger.info(it.toString()) }
.headers
assertTrue {
logger.wasCalled() && headers.headerInfo.equals("some header info")
}
}
@Test
fun shouldInitializeFieldWhenAlsoUsed() {
val aStudent = Student().also { it.name = "John"}
assertTrue {
aStudent.name.equals("John")
}
}
@Test
fun shouldLogicallyGroupObjectCallsWhenUsingWith() {
val bankAccount = BankAccount(1000)
with (bankAccount) {
checkAuthorization("someone")
addPayee("some payee")
makePayment("payment information")
}
}
@Test
fun shouldConvertObjectWhenRunUsed() {
val stringBuider = StringBuilder()
val numberOfCharacters = stringBuider.run {
append("This is a transformation function.")
append("It takes a StringBuilder instance and returns the number of characters in the generated String")
length
}
assertTrue {
numberOfCharacters == 128
}
}
@Test
fun shouldHandleNullabilityWhenRunIsUsed() {
val message: String? = "hello there!"
val charactersInMessage = message?.run {
"At this point is safe to reference the variable. Let's print the message: $this"
} ?: "default value"
assertTrue {
charactersInMessage.equals("At this point is safe to reference the variable. Let's print the message: hello there!")
}
}
}

2
gson/README.md
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@ -11,3 +11,5 @@
- [Convert JSON to a Map Using Gson](https://www.baeldung.com/gson-json-to-map)
- [Working with Primitive Values in Gson](https://www.baeldung.com/java-gson-primitives)
- [Convert String to JsonObject with Gson](https://www.baeldung.com/gson-string-to-jsonobject)
- [Mapping Multiple JSON Fields to One Java Field](https://www.baeldung.com/json-multiple-fields-single-java-field)

13
jackson-2/.gitignore vendored Normal file
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@ -0,0 +1,13 @@
*.class
#folders#
/target
/neoDb*
/data
/src/main/webapp/WEB-INF/classes
*/META-INF/*
# Packaged files #
*.jar
*.war
*.ear

9
jackson-2/README.md Normal file
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@ -0,0 +1,9 @@
=========
## Jackson Cookbooks and Examples
###The Course
The "REST With Spring" Classes: http://bit.ly/restwithspring
### Relevant Articles:
- [Mapping Multiple JSON Fields to One Java Field](https://www.baeldung.com/json-multiple-fields-single-java-field)

52
jackson-2/pom.xml Normal file
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@ -0,0 +1,52 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>jackson-2</artifactId>
<version>0.1-SNAPSHOT</version>
<name>jackson-2</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<dependencies>
<!-- marshalling -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
<!-- test scoped -->
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>jackson-2</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
<properties>
<!-- testing -->
<assertj.version>3.11.0</assertj.version>
</properties>
</project>

0
jackson/src/main/java/com/baeldung/jackson/entities/Weather.java → jackson-2/src/main/java/com/baeldung/jackson/entities/Weather.java
View File

13
jackson-2/src/main/resources/logback.xml Normal file
View File

@ -0,0 +1,13 @@
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT" />
</root>
</configuration>

0
jackson/src/test/java/com/baeldung/jackson/deserialization/jsonalias/JsonAliasUnitTest.java → jackson-2/src/test/java/com/baeldung/jackson/deserialization/jsonalias/JsonAliasUnitTest.java
View File

29
java-dates-2/.gitignore vendored Normal file
View File

@ -0,0 +1,29 @@
*.class
0.*
#folders#
/target
/neoDb*
/data
/src/main/webapp/WEB-INF/classes
*/META-INF/*
.resourceCache
# Packaged files #
*.jar
*.war
*.ear
# Files generated by integration tests
*.txt
backup-pom.xml
/bin/
/temp
#IntelliJ specific
.idea/
*.iml
#jenv
.java-version

55
java-dates-2/pom.xml Normal file
View File

@ -0,0 +1,55 @@
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>java-dates-2</artifactId>
<version>0.1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>java-dates-2</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<dependencies>
<!-- test scoped -->
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>java-dates-2</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<!-- testing -->
<assertj.version>3.6.1</assertj.version>
<maven.compiler.source>1.9</maven.compiler.source>
<maven.compiler.target>1.9</maven.compiler.target>
</properties>
</project>

36
java-dates-2/src/test/java/com/baeldung/xmlgregoriancalendar/XmlGregorianCalendarConverterUnitTest.java Normal file
View File

@ -0,0 +1,36 @@
package com.baeldung.xmlgregoriancalendar;
import org.junit.Test;
import javax.xml.datatype.DatatypeConfigurationException;
import javax.xml.datatype.DatatypeConstants;
import javax.xml.datatype.DatatypeFactory;
import javax.xml.datatype.XMLGregorianCalendar;
import java.time.LocalDate;
import static org.assertj.core.api.Assertions.assertThat;
public class XmlGregorianCalendarConverterUnitTest {
@Test
public void fromLocalDateToXMLGregorianCalendar() throws DatatypeConfigurationException {
LocalDate localDate = LocalDate.of(2017, 4, 25);
XMLGregorianCalendar xmlGregorianCalendar = DatatypeFactory.newInstance().newXMLGregorianCalendar(localDate.toString());
assertThat(xmlGregorianCalendar.getYear()).isEqualTo(localDate.getYear());
assertThat(xmlGregorianCalendar.getMonth()).isEqualTo(localDate.getMonthValue());
assertThat(xmlGregorianCalendar.getDay()).isEqualTo(localDate.getDayOfMonth());
assertThat(xmlGregorianCalendar.getTimezone()).isEqualTo(DatatypeConstants.FIELD_UNDEFINED);
}
@Test
public void fromXMLGregorianCalendarToLocalDate() throws DatatypeConfigurationException {
XMLGregorianCalendar xmlGregorianCalendar = DatatypeFactory.newInstance().newXMLGregorianCalendar("2017-04-25");
LocalDate localDate = LocalDate.of(xmlGregorianCalendar.getYear(), xmlGregorianCalendar.getMonth(), xmlGregorianCalendar.getDay());
assertThat(localDate.getYear()).isEqualTo(xmlGregorianCalendar.getYear());
assertThat(localDate.getMonthValue()).isEqualTo(xmlGregorianCalendar.getMonth());
assertThat(localDate.getDayOfMonth()).isEqualTo(xmlGregorianCalendar.getDay());
}
}

29
kotlin-libraries/pom.xml
View File

@ -19,6 +19,14 @@
<name>exposed</name>
<url>https://dl.bintray.com/kotlin/exposed</url>
</repository>
<repository>
<snapshots>
<enabled>false</enabled>
</snapshots>
<id>kotlinx</id>
<name>bintray</name>
<url>https://dl.bintray.com/kotlin/kotlinx</url>
</repository>
</repositories>
<dependencies>
@ -112,9 +120,30 @@
<version>3.3.0</version>
<type>pom</type>
</dependency>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>27.1-jre</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.jetbrains.kotlinx/kotlinx-collections-immutable -->
<dependency>
<groupId>org.jetbrains.kotlinx</groupId>
<artifactId>kotlinx-collections-immutable</artifactId>
<version>0.1</version>
</dependency>
</dependencies>
<properties>
<junit.version>4.12</junit.version>
<mockito-kotlin.version>1.5.0</mockito-kotlin.version>
<kodein.version>4.1.0</kodein.version>
<klaxon.version>3.0.4</klaxon.version>

27
kotlin-libraries/src/test/kotlin/com/baeldung/kotlin/immutable/KotlinxImmutablesUnitTest.kt Normal file
View File

@ -0,0 +1,27 @@
package com.baeldung.kotlin.immutable
import junit.framework.Assert.assertEquals
import kotlinx.collections.immutable.ImmutableList
import kotlinx.collections.immutable.immutableListOf
import org.junit.Rule
import org.junit.Test
import org.junit.rules.ExpectedException
class KotlinxImmutablesUnitTest{
@Rule
@JvmField
var ee : ExpectedException = ExpectedException.none()
@Test
fun givenKICLList_whenAddTried_checkExceptionThrown(){
val list: ImmutableList<String> = immutableListOf("I", "am", "immutable")
list.add("My new item")
assertEquals(listOf("I", "am", "immutable"), list)
}
}

73
kotlin-libraries/src/test/kotlin/com/baeldung/kotlin/immutable/ReadOnlyUnitTest.kt Normal file
View File

@ -0,0 +1,73 @@
package com.baeldung.kotlin.immutable
import com.google.common.collect.ImmutableList
import com.google.common.collect.ImmutableSet
import junit.framework.Assert.assertEquals
import org.junit.Rule
import org.junit.Test
import org.junit.rules.ExpectedException
class ReadOnlyUnitTest{
@Test
fun givenReadOnlyList_whenCastToMutableList_checkNewElementsAdded(){
val list: List<String> = listOf("This", "Is", "Totally", "Immutable")
(list as MutableList<String>)[2] = "Not"
assertEquals(listOf("This", "Is", "Not", "Immutable"), list)
}
@Rule
@JvmField
var ee : ExpectedException = ExpectedException.none()
@Test
fun givenImmutableList_whenAddTried_checkExceptionThrown(){
val list: List<String> = ImmutableList.of("I", "am", "actually", "immutable")
ee.expect(UnsupportedOperationException::class.java)
(list as MutableList<String>).add("Oops")
}
@Test
fun givenMutableList_whenCopiedAndAddTried_checkExceptionThrown(){
val mutableList : List<String> = listOf("I", "Am", "Definitely", "Immutable")
(mutableList as MutableList<String>)[2] = "100% Not"
assertEquals(listOf("I", "Am", "100% Not", "Immutable"), mutableList)
val list: List<String> = ImmutableList.copyOf(mutableList)
ee.expect(UnsupportedOperationException::class.java)
(list as MutableList<String>)[2] = "Really?"
}
@Test
fun givenImmutableSetBuilder_whenAddTried_checkExceptionThrown(){
val mutableList : List<String> = listOf("Hello", "Baeldung")
val set: ImmutableSet<String> = ImmutableSet.builder<String>()
.add("I","am","immutable")
.addAll(mutableList)
.build()
assertEquals(setOf("Hello", "Baeldung", "I", "am", "immutable"), set)
ee.expect(UnsupportedOperationException::class.java)
(set as MutableSet<String>).add("Oops")
}
}

7
persistence-modules/hibernate5/pom.xml
View File

@ -83,13 +83,18 @@
<artifactId>jmh-generator-annprocess</artifactId>
<version>${openjdk-jmh.version}</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
</dependencies>
<build>
<finalName>hibernate5</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<directory>src/test/resources</directory>
<filtering>true</filtering>
</resource>
</resources>

1
persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/HibernateUtil.java
View File

@ -113,6 +113,7 @@ public class HibernateUtil {
metadataSources.addAnnotatedClass(OptimisticLockingCourse.class);
metadataSources.addAnnotatedClass(OptimisticLockingStudent.class);
metadataSources.addAnnotatedClass(OfficeEmployee.class);
metadataSources.addAnnotatedClass(Post.class);
Metadata metadata = metadataSources.getMetadataBuilder()
.applyBasicType(LocalDateStringType.INSTANCE)

59
persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/pojo/Post.java Normal file
View File

@ -0,0 +1,59 @@
package com.baeldung.hibernate.pojo;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "posts")
public class Post {
@Id
@GeneratedValue
private int id;
private String title;
private String body;
public Post() { }
public Post(String title, String body) {
this.title = title;
this.body = body;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
@Override
public String toString() {
return "Post{" +
"id=" + id +
", title='" + title + '\'' +
", body='" + body + '\'' +
'}';
}
}

29
persistence-modules/hibernate5/src/main/java/com/baeldung/hibernate/transaction/PostService.java Normal file
View File

@ -0,0 +1,29 @@
package com.baeldung.hibernate.transaction;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.query.Query;
public class PostService {
private Session session;
public PostService(Session session) {
this.session = session;
}
public void updatePost(String title, String body, int id) {
Transaction txn = session.beginTransaction();
Query updateQuery = session.createQuery("UPDATE Post p SET p.title = ?1, p.body = ?2 WHERE p.id = ?3");
updateQuery.setParameter(1, title);
updateQuery.setParameter(2, body);
updateQuery.setParameter(3, id);
updateQuery.executeUpdate();
txn.commit();
}
}

2
persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/CustomClassIntegrationTest.java
View File

@ -74,4 +74,6 @@ public class CustomClassIntegrationTest {
assertEquals("John Smith", result.getEmployeeName());
assertEquals("Sales", result.getDepartmentName());
}
}

57
persistence-modules/hibernate5/src/test/java/com/baeldung/hibernate/transaction/TransactionIntegrationTest.java Normal file
View File

@ -0,0 +1,57 @@
package com.baeldung.hibernate.transaction;
import com.baeldung.hibernate.HibernateUtil;
import com.baeldung.hibernate.pojo.Post;
import com.baeldung.hibernate.transaction.PostService;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.junit.BeforeClass;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
import static org.junit.Assert.assertEquals;
public class TransactionIntegrationTest {
private static PostService postService;
private static Session session;
private static Logger logger = LoggerFactory.getLogger(TransactionIntegrationTest.class);
@BeforeClass
public static void init() throws IOException {
Properties properties = new Properties();
properties.setProperty("hibernate.connection.driver_class", "org.h2.Driver");
properties.setProperty("hibernate.connection.url", "jdbc:h2:mem:mydb1;DB_CLOSE_DELAY=-1");
properties.setProperty("hibernate.connection.username", "sa");
properties.setProperty("hibernate.show_sql", "true");
properties.setProperty("jdbc.password", "");
properties.setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
properties.setProperty("hibernate.hbm2ddl.auto", "create-drop");
SessionFactory sessionFactory = HibernateUtil.getSessionFactoryByProperties(properties);
session = sessionFactory.openSession();
postService = new PostService(session);
}
@Test
public void givenTitleAndBody_whenRepositoryUpdatePost_thenUpdatePost() {
Post post = new Post("This is a title", "This is a sample post");
session.persist(post);
String title = "[UPDATE] Java HowTos";
String body = "This is an updated posts on Java how-tos";
postService.updatePost(title, body, post.getId());
session.refresh(post);
assertEquals(post.getTitle(), title);
assertEquals(post.getBody(), body);
}
}

5
persistence-modules/spring-data-jpa-2/README.md Normal file
View File

@ -0,0 +1,5 @@
=========
## Spring Data JPA Example Project
### Relevant Articles:

30
persistence-modules/spring-data-jpa-2/pom.xml Normal file
View File

@ -0,0 +1,30 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>spring-data-jpa-2</artifactId>
<name>spring-data-jpa</name>
<parent>
<artifactId>parent-boot-2</artifactId>
<groupId>com.baeldung</groupId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-boot-2</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
</dependencies>
</project>

13
persistence-modules/spring-data-jpa-2/src/main/java/com/baeldung/Application.java Normal file
View File

@ -0,0 +1,13 @@
package com.baeldung;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

38
persistence-modules/spring-data-jpa-2/src/main/java/com/baeldung/entity/Fruit.java Normal file
View File

@ -0,0 +1,38 @@
package com.baeldung.entity;
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity
public class Fruit {
@Id
private long id;
private String name;
private String color;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
}

27
persistence-modules/spring-data-jpa-2/src/main/java/com/baeldung/repository/FruitRepository.java Normal file
View File

@ -0,0 +1,27 @@
package com.baeldung.repository;
import java.util.List;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
import org.springframework.stereotype.Repository;
import com.baeldung.entity.Fruit;
@Repository
public interface FruitRepository extends JpaRepository<Fruit, Long> {
Long deleteByName(String name);
List<Fruit> deleteByColor(String color);
Long removeByName(String name);
List<Fruit> removeByColor(String color);
@Modifying
@Query("delete from Fruit f where f.name=:name or f.color=:color")
List<Fruit> deleteFruits(@Param("name") String name, @Param("color") String color);
}

1
persistence-modules/spring-data-jpa-2/src/main/resources/application.properties Normal file
View File

@ -0,0 +1 @@
spring.jpa.show-sql=true

77
persistence-modules/spring-data-jpa-2/src/test/java/com/baeldung/repository/FruitRepositoryIntegrationTest.java Normal file
View File

@ -0,0 +1,77 @@
package com.baeldung.repository;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.List;
import org.junit.jupiter.api.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.jdbc.Sql;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.transaction.annotation.Transactional;
import com.baeldung.entity.Fruit;
@RunWith(SpringRunner.class)
@SpringBootTest
class FruitRepositoryIntegrationTest {
@Autowired
private FruitRepository fruitRepository;
@Transactional
@Test
@Sql(scripts = { "/test-fruit-data.sql" })
public void givenFruits_WhenDeletedByColor_DeletedFruitShouldReturn() {
List<Fruit> fruits = fruitRepository.deleteByColor("green");
assertEquals("number of fruits are not matching", 2, fruits.size());
fruits.forEach(fruit -> assertEquals("Its not a green fruit", "green", fruit.getColor()));
}
@Transactional
@Test
@Sql(scripts = { "/test-fruit-data.sql" })
public void givenFruits_WhenDeletedByName_DeletedFruitCountShouldReturn() {
Long deletedFruitCount = fruitRepository.deleteByName("apple");
assertEquals("deleted fruit count is not matching", 1, deletedFruitCount.intValue());
}
@Transactional
@Test
@Sql(scripts = { "/test-fruit-data.sql" })
public void givenFruits_WhenRemovedByColor_DeletedFruitShouldReturn() {
List<Fruit> fruits = fruitRepository.removeByColor("green");
assertEquals("number of fruits are not matching", 2, fruits.size());
fruits.forEach(fruit -> assertEquals("Its not a green fruit", "green", fruit.getColor()));
}
@Transactional
@Test
@Sql(scripts = { "/test-fruit-data.sql" })
public void givenFruits_WhenRemovedByName_DeletedFruitCountShouldReturn() {
Long deletedFruitCount = fruitRepository.removeByName("apple");
assertEquals("deleted fruit count is not matching", 1, deletedFruitCount.intValue());
}
@Transactional
@Test
@Sql(scripts = { "/test-fruit-data.sql" })
public void givenFruits_WhenDeletedByColorOrName_DeletedFruitShouldReturn() {
List<Fruit> fruits = fruitRepository.deleteFruits("apple", "green");
assertEquals("number of fruits are not matching", 3, fruits.size());
fruits.forEach(fruit -> assertTrue("Its not a green fruit or apple", ("green".equals(fruit.getColor())) || "apple".equals(fruit.getColor())));
}
}

4
persistence-modules/spring-data-jpa-2/src/test/resources/test-fruit-data.sql Normal file
View File

@ -0,0 +1,4 @@
insert into fruit(id,name,color) values (1,'apple','red');
insert into fruit(id,name,color) values (2,'custard apple','green');
insert into fruit(id,name,color) values (3,'mango','yellow');
insert into fruit(id,name,color) values (4,'guava','green');

5
pom.xml
View File

@ -377,6 +377,7 @@
<module>core-groovy</module>
<!-- <module>core-java-10</module> --> <!-- We haven't upgraded to java 10. Fixing in BAEL-10841 -->
<!-- <module>core-java-11</module> --> <!-- We haven't upgraded to java 11. Fixing in BAEL-10841 -->
<!-- <module>core-java-12</module> --> <!-- We haven't upgraded to java 12. Fixing in BAEL-10841 -->
<module>core-java-8</module>
<!--<module>core-java-9</module> --> <!-- We haven't upgraded to java 9. Fixing in BAEL-10841 -->
<!--<module>core-java-os</module> --> <!-- We haven't upgraded to java 9.-->
@ -436,9 +437,11 @@
<module>immutables</module>
<module>jackson</module>
<module>jackson-2</module>
<module>java-collections-conversions</module>
<module>java-collections-maps</module>
<!-- <module>java-dates</module> --> <!-- We haven't upgraded to java 9. Fixing in BAEL-10841 -->
<!-- <module>java-dates-2</module> --> <!-- We haven't upgraded to java 9. Fixing in BAEL-10841 -->
<!-- <module>java-ee-8-security-api</module> --> <!-- long running -->
<module>java-lite</module>
<module>java-numbers</module>
@ -579,6 +582,7 @@
<module>spring-5-reactive-client</module>
<module>spring-5-reactive-oauth</module>
<module>spring-5-reactive-security</module>
<module>spring-5-reactive-netty</module>
<module>spring-5-security</module>
<module>spring-5-security-oauth</module>
@ -1078,6 +1082,7 @@
<module>immutables</module>
<module>jackson</module>
<module>jackson-2</module>
<module>java-collections-conversions</module>
<module>java-collections-maps</module>
<!-- <module>java-dates</module> --> <!-- We haven't upgraded to java 9. Fixing in BAEL-10841 -->

11
spring-5-reactive-netty/.gitignore vendored Normal file
View File

@ -0,0 +1,11 @@
# Folders #
**/.idea
**/target
# Files #
*.log
# Packaged files #
*.jar
*.war
*.ear

3
spring-5-reactive-netty/README.md Normal file
View File

@ -0,0 +1,3 @@
## Spring 5 Reactive Project With Netty Server
Includes configuration options for Netty server.

51
spring-5-reactive-netty/pom.xml Normal file
View File

@ -0,0 +1,51 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>spring-5-reactive-netty</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>spring-5-reactive-netty</name>
<packaging>jar</packaging>
<description>Spring 5 sample project about reactive web with Netty server</description>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-boot-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-boot-2</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

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spring-5-reactive-netty/src/main/java/com/baeldung/serverconfig/CustomNettyWebServerFactory.java Normal file
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package com.baeldung.serverconfig;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import org.springframework.boot.web.embedded.netty.NettyReactiveWebServerFactory;
import org.springframework.boot.web.embedded.netty.NettyServerCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import reactor.netty.http.server.HttpServer;
@Configuration
@Profile("skipAutoConfig")
public class CustomNettyWebServerFactory {
@Bean
public NettyReactiveWebServerFactory nettyReactiveWebServerFactory() {
NettyReactiveWebServerFactory webServerFactory = new NettyReactiveWebServerFactory();
webServerFactory.addServerCustomizers(new EventLoopNettyCustomizer());
return webServerFactory;
}
private static class EventLoopNettyCustomizer implements NettyServerCustomizer {
@Override
public HttpServer apply(HttpServer httpServer) {
EventLoopGroup parentGroup = new NioEventLoopGroup();
EventLoopGroup childGroup = new NioEventLoopGroup();
return httpServer
.tcpConfiguration(tcpServer -> tcpServer.bootstrap(
serverBootstrap -> serverBootstrap.group(parentGroup, childGroup).channel(NioServerSocketChannel.class)
));
}
}
}

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spring-5-reactive-netty/src/main/java/com/baeldung/serverconfig/GreetingController.java Normal file
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package com.baeldung.serverconfig;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import reactor.core.publisher.Mono;
@RestController
@RequestMapping("/greet")
public class GreetingController {
private final GreetingService greetingService;
public GreetingController(GreetingService greetingService) {
this.greetingService = greetingService;
}
@GetMapping("/{name}")
private Mono<String> greet(@PathVariable String name) {
return greetingService.greet(name);
}
}

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spring-5-reactive-netty/src/main/java/com/baeldung/serverconfig/GreetingService.java Normal file
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package com.baeldung.serverconfig;
import org.springframework.stereotype.Service;
import reactor.core.publisher.Mono;
@Service
public class GreetingService {
public Mono<String> greet(String name) {
return Mono.just("Greeting " + name);
}
}

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spring-5-reactive-netty/src/main/java/com/baeldung/serverconfig/NettyWebServerFactoryPortCustomizer.java Normal file
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package com.baeldung.serverconfig;
import org.springframework.boot.web.embedded.netty.NettyReactiveWebServerFactory;
import org.springframework.boot.web.embedded.netty.NettyServerCustomizer;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.stereotype.Component;
import reactor.netty.http.server.HttpServer;
@Component
public class NettyWebServerFactoryPortCustomizer implements WebServerFactoryCustomizer<NettyReactiveWebServerFactory> {
@Override
public void customize(NettyReactiveWebServerFactory serverFactory) {
serverFactory.addServerCustomizers(new PortCustomizer(8443));
}
private static class PortCustomizer implements NettyServerCustomizer {
private final int port;
private PortCustomizer(int port) {
this.port = port;
}
@Override
public HttpServer apply(HttpServer httpServer) {
return httpServer.port(port);
}
}
}

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spring-5-reactive-netty/src/main/java/com/baeldung/serverconfig/NettyWebServerFactorySslCustomizer.java Normal file
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package com.baeldung.serverconfig;
import org.springframework.boot.web.embedded.netty.NettyReactiveWebServerFactory;
import org.springframework.boot.web.embedded.netty.SslServerCustomizer;
import org.springframework.boot.web.server.Http2;
import org.springframework.boot.web.server.Ssl;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.stereotype.Component;
@Component
public class NettyWebServerFactorySslCustomizer implements WebServerFactoryCustomizer<NettyReactiveWebServerFactory> {
@Override
public void customize(NettyReactiveWebServerFactory serverFactory) {
Ssl ssl = new Ssl();
ssl.setEnabled(true);
ssl.setKeyStore("classpath:sample.jks");
ssl.setKeyAlias("alias");
ssl.setKeyPassword("password");
ssl.setKeyStorePassword("secret");
Http2 http2 = new Http2();
http2.setEnabled(false);
serverFactory.addServerCustomizers(new SslServerCustomizer(ssl, http2, null));
serverFactory.setPort(8443);
}
}

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spring-5-reactive-netty/src/main/java/com/baeldung/serverconfig/ServerConfigApplication.java Normal file
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package com.baeldung.serverconfig;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ServerConfigApplication {
public static void main(String[] args) {
SpringApplication.run(ServerConfigApplication.class, args);
}
}

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spring-5-reactive-netty/src/main/resources/logback.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="Console"
class="ch.qos.logback.core.ConsoleAppender">
<layout class="ch.qos.logback.classic.PatternLayout">
<Pattern>
%black(%d{ISO8601}) %highlight(%-5level) [%blue(%t)] %yellow(%C{1.}): %msg%n%throwable
</Pattern>
</layout>
</appender>
<appender name="AccessLog" class="ch.qos.logback.core.FileAppender">
<file>netty-access.log</file>
<encoder>
<pattern>%msg%n</pattern>
</encoder>
</appender>
<appender name="Async" class="ch.qos.logback.classic.AsyncAppender">
<appender-ref ref="AccessLog"/>
</appender>
<logger name="reactor.netty.http.server.AccessLog" level="INFO" additivity="false">
<appender-ref ref="Console"/>
<appender-ref ref="Async"/>
</logger>
<root level="info">
<appender-ref ref="Console"/>
</root>
</configuration>

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spring-5-reactive-netty/src/main/resources/sample.jks Normal file
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spring-5-reactive-netty/src/test/java/com/baeldung/serverconfig/GreetingControllerIntegrationTest.java Normal file
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package com.baeldung.serverconfig;
import static org.mockito.Mockito.when;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.reactive.WebFluxTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.reactive.server.WebTestClient;
import reactor.core.publisher.Mono;
@RunWith(SpringRunner.class)
@WebFluxTest
public class GreetingControllerIntegrationTest {
@Autowired
private WebTestClient webClient;
@MockBean
private GreetingService greetingService;
private final String name = "Baeldung";
@Before
public void setUp() {
when(greetingService.greet(name)).thenReturn(Mono.just("Greeting Baeldung"));
}
@Test
public void shouldGreet() {
webClient.get().uri("/greet/{name}", name)
.exchange()
.expectStatus()
.isOk()
.expectBody(String.class)
.isEqualTo("Greeting Baeldung");
}
}

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spring-5-reactive-netty/src/test/java/com/baeldung/serverconfig/GreetingLiveTest.java Normal file
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package com.baeldung.serverconfig;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
import javax.net.ssl.SSLException;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.http.client.reactive.ReactorClientHttpConnector;
import org.springframework.test.context.ActiveProfiles;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.reactive.server.WebTestClient;
import org.springframework.test.web.reactive.server.WebTestClient.ResponseSpec;
import reactor.netty.http.client.HttpClient;
@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = WebEnvironment.DEFINED_PORT)
public class GreetingLiveTest {
private static final String BASE_URL = "https://localhost:8443";
private WebTestClient webTestClient;
@Before
public void setup() throws SSLException {
webTestClient = WebTestClient.bindToServer(getConnector())
.baseUrl(BASE_URL)
.build();
}
@Test
public void shouldGreet() {
final String name = "Baeldung";
ResponseSpec response = webTestClient.get()
.uri("/greet/{name}", name)
.exchange();
response.expectStatus()
.isOk()
.expectBody(String.class)
.isEqualTo("Greeting Baeldung");
}
private ReactorClientHttpConnector getConnector() throws SSLException {
SslContext sslContext = SslContextBuilder
.forClient()
.trustManager(InsecureTrustManagerFactory.INSTANCE)
.build();
HttpClient httpClient = HttpClient.create().secure(t -> t.sslContext(sslContext));
return new ReactorClientHttpConnector(httpClient);
}
}

8
spring-5-reactive-netty/src/test/java/com/baeldung/serverconfig/GreetingSkipAutoConfigLiveTest.java Normal file
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package com.baeldung.serverconfig;
import org.springframework.test.context.ActiveProfiles;
@ActiveProfiles("skipAutoConfig")
public class GreetingSkipAutoConfigLiveTest extends GreetingLiveTest {
}

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spring-5-reactive-netty/src/test/resources/logback-test.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<appender name="Console" class="ch.qos.logback.core.ConsoleAppender">
<layout class="ch.qos.logback.classic.PatternLayout">
<Pattern>
%black(%d{ISO8601}) %highlight(%-5level) [%blue(%t)] %yellow(%C{1.}): %msg%n%throwable
</Pattern>
</layout>
</appender>
<root level="info">
<appender-ref ref="Console"/>
</root>
</configuration>

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spring-boot-rest/src/main/java/com/baeldung/web/controller/students/Student.java Normal file
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package com.baeldung.web.controller.students;
public class Student {
private long id;
private String firstName;
private String lastName;
public Student() {}
public Student(String firstName, String lastName) {
super();
this.firstName = firstName;
this.lastName = lastName;
}
public Student(long id, String firstName, String lastName) {
super();
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
@Override
public String toString() {
return "Student [id=" + id + ", firstName=" + firstName + ", lastName=" + lastName + "]";
}
}

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spring-boot-rest/src/main/java/com/baeldung/web/controller/students/StudentController.java Normal file
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package com.baeldung.web.controller.students;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
import com.baeldung.web.controller.students.StudentService;
@RestController
@RequestMapping("/students")
public class StudentController {
@Autowired
private StudentService service;
@GetMapping("/")
public List<Student> read() {
return service.readAll();
}
@GetMapping("/{id}")
public ResponseEntity<Student> read(@PathVariable("id") Long id) {
Student foundStudent = service.read(id);
if (foundStudent == null) {
return ResponseEntity.notFound().build();
} else {
return ResponseEntity.ok(foundStudent);
}
}
@PostMapping("/")
public ResponseEntity<Student> create(@RequestBody Student student) throws URISyntaxException {
Student createdStudent = service.create(student);
URI uri = ServletUriComponentsBuilder.fromCurrentRequest()
.path("/{id}")
.buildAndExpand(createdStudent.getId())
.toUri();
return ResponseEntity.created(uri)
.body(createdStudent);
}
@PutMapping("/{id}")
public ResponseEntity<Student> update(@RequestBody Student student, @PathVariable Long id) {
Student updatedStudent = service.update(id, student);
if (updatedStudent == null) {
return ResponseEntity.notFound().build();
} else {
return ResponseEntity.ok(updatedStudent);
}
}
@DeleteMapping("/{id}")
public ResponseEntity<Object> deleteStudent(@PathVariable Long id) {
service.delete(id);
return ResponseEntity.noContent().build();
}
}

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spring-boot-rest/src/main/java/com/baeldung/web/controller/students/StudentService.java Normal file
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package com.baeldung.web.controller.students;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
import java.util.function.Function;
import java.util.stream.Collectors;
import org.springframework.stereotype.Service;
@Service
public class StudentService {
// DB repository mock
private Map<Long, Student> repository = Arrays.asList(
new Student[]{
new Student(1, "Alan","Turing"),
new Student(2, "Sebastian","Bach"),
new Student(3, "Pablo","Picasso"),
}).stream()
.collect(Collectors.toConcurrentMap(s -> s.getId(), Function.identity()));
// DB id sequence mock
private AtomicLong sequence = new AtomicLong(3);
public List<Student> readAll() {
return repository.values().stream().collect(Collectors.toList());
}
public Student read(Long id) {
return repository.get(id);
}
public Student create(Student student) {
long key = sequence.incrementAndGet();
student.setId(key);
repository.put(key, student);
return student;
}
public Student update(Long id, Student student) {
student.setId(id);
Student oldStudent = repository.replace(id, student);
return oldStudent == null ? null : student;
}
public void delete(Long id) {
repository.remove(id);
}
}

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spring-boot-rest/src/test/java/com/baeldung/web/StudentControllerIntegrationTest.java Normal file
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package com.baeldung.web;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.http.MediaType;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.web.server.MediaTypeNotSupportedStatusException;
import com.baeldung.web.controller.students.Student;
import com.fasterxml.jackson.databind.ObjectMapper;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.delete;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.put;
@RunWith(SpringRunner.class)
@SpringBootTest
@AutoConfigureMockMvc
public class StudentControllerIntegrationTest {
private static final String STUDENTS_PATH = "/students/";
@Autowired
private MockMvc mockMvc;
@Test
public void whenReadAll_thenStatusIsOk() throws Exception {
this.mockMvc.perform(get(STUDENTS_PATH))
.andExpect(status().isOk());
}
@Test
public void whenReadOne_thenStatusIsOk() throws Exception {
this.mockMvc.perform(get(STUDENTS_PATH + 1))
.andExpect(status().isOk());
}
@Test
public void whenCreate_thenStatusIsCreated() throws Exception {
Student student = new Student(10, "Albert", "Einstein");
this.mockMvc.perform(post(STUDENTS_PATH).content(asJsonString(student))
.contentType(MediaType.APPLICATION_JSON_VALUE))
.andExpect(status().isCreated());
}
@Test
public void whenUpdate_thenStatusIsOk() throws Exception {
Student student = new Student(1, "Nikola", "Tesla");
this.mockMvc.perform(put(STUDENTS_PATH + 1)
.content(asJsonString(student))
.contentType(MediaType.APPLICATION_JSON_VALUE))
.andExpect(status().isOk());
}
@Test
public void whenDelete_thenStatusIsNoContent() throws Exception {
this.mockMvc.perform(delete(STUDENTS_PATH + 3))
.andExpect(status().isNoContent());
}
private String asJsonString(final Object obj) {
try {
return new ObjectMapper().writeValueAsString(obj);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}