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BAEL-6032 - @JsonIgnore vs @Transient (#13254) 

* BAEL-6032 - @JsonIgnore vs @Transient

* Rename test methods
This commit is contained in:
apeterlic 2023-01-12 14:20:58 +01:00 committed by GitHub
parent dc5641200e
commit 02b56bf783
8 changed files with 209 additions and 0 deletions
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23
jackson-modules/jackson-annotations/pom.xml
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@ -25,6 +25,27 @@
<version>${rest-assured.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>${spring-boot.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
<version>${spring-boot.version}</version>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>${h2.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>${spring-boot.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
@ -38,7 +59,9 @@
</build>
<properties>
<h2.version>2.1.214</h2.version>
<rest-assured.version>3.1.1</rest-assured.version>
<spring-boot.version>2.5.0</spring-boot.version>
</properties>
</project>

13
jackson-modules/jackson-annotations/src/main/java/com/baeldung/jackson/jsonignorevstransient/Application.java Normal file
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@ -0,0 +1,13 @@
package com.baeldung.jackson.jsonignorevstransient;
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);
}
}

34
jackson-modules/jackson-annotations/src/main/java/com/baeldung/jackson/jsonignorevstransient/Person.java Normal file
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@ -0,0 +1,34 @@
package com.baeldung.jackson.jsonignorevstransient;
import com.fasterxml.jackson.annotation.JsonIgnore;
import java.io.Serializable;
class Person implements Serializable {
@JsonIgnore
private final Long id;
private final String firstName;
private final String lastName;
public Person(Long id, String firstName, String lastName) {
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
}
public Long getId() {
return id;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
}

64
jackson-modules/jackson-annotations/src/main/java/com/baeldung/jackson/jsonignorevstransient/User.java Normal file
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@ -0,0 +1,64 @@
package com.baeldung.jackson.jsonignorevstransient;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Transient;
import java.io.Serializable;
@Entity
@Table(name = "Users")
class User implements Serializable {
@Id
private Long id;
private String username;
private String password;
@Transient
private String repeatedPassword;
public User() {
}
public User(Long id, String username, String password, String repeatedPassword) {
this.id = id;
this.username = username;
this.password = password;
this.repeatedPassword = repeatedPassword;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getRepeatedPassword() {
return repeatedPassword;
}
public void setRepeatedPassword(String repeatedPassword) {
this.repeatedPassword = repeatedPassword;
}
}

8
jackson-modules/jackson-annotations/src/main/java/com/baeldung/jackson/jsonignorevstransient/UserRepository.java Normal file
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@ -0,0 +1,8 @@
package com.baeldung.jackson.jsonignorevstransient;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface UserRepository extends JpaRepository<User, Long> {
}

23
jackson-modules/jackson-annotations/src/test/java/com/baeldung/jackson/jsonignorevstransient/PersonUnitTest.java Normal file
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@ -0,0 +1,23 @@
package com.baeldung.jackson.jsonignorevstransient;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Test;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.not;
class PersonUnitTest {
@Test
void givenPerson_whenSerializing_thenIdFieldIgnored() throws JsonProcessingException {
Person person = new Person(1L, "My First Name", "My Last Name");
String result = new ObjectMapper().writeValueAsString(person);
assertThat(result, containsString("firstName"));
assertThat(result, containsString("lastName"));
assertThat(result, not(containsString("id")));
}
}

39
jackson-modules/jackson-annotations/src/test/java/com/baeldung/jackson/jsonignorevstransient/UserUnitTest.java Normal file
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@ -0,0 +1,39 @@
package com.baeldung.jackson.jsonignorevstransient;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsString;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
@SpringBootTest
class UserUnitTest {
@Autowired
UserRepository userRepository;
@Test
void givenUser_whenSave_thenSkipTransientFields() {
User user = new User(1L, "user", "newPassword123", "newPassword123");
User savedUser = userRepository.save(user);
assertNotNull(savedUser);
assertNotNull(savedUser.getPassword());
assertNull(savedUser.getRepeatedPassword());
}
@Test
void givenUser_whenSerializing_thenTransientFieldNotIgnored() throws JsonProcessingException {
User user = new User(1L, "user", "newPassword123", "newPassword123");
String result = new ObjectMapper().writeValueAsString(user);
assertThat(result, containsString("user"));
assertThat(result, containsString("repeatedPassword"));
}
}

5
jackson-modules/jackson-annotations/src/test/resources/application.properties Normal file
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@ -0,0 +1,5 @@
hibernate.hbm2ddl.auto=create-drop
spring.datasource.jdbcUrl=jdbc:h2:mem:testDb;DB_CLOSE_DELAY=-1
spring.datasource.username=sa
spring.datasource.password=sa