aspectj introduction
This commit is contained in:
parent
5a6ab35333
commit
108adf84f6
|
@ -0,0 +1,131 @@
|
||||||
|
<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>aspectj</artifactId>
|
||||||
|
<version>0.0.1-SNAPSHOT</version>
|
||||||
|
<name>aspectj</name>
|
||||||
|
|
||||||
|
<dependencies>
|
||||||
|
<dependency>
|
||||||
|
<groupId>org.aspectj</groupId>
|
||||||
|
<artifactId>aspectjrt</artifactId>
|
||||||
|
<version>${aspectj.version}</version>
|
||||||
|
</dependency>
|
||||||
|
|
||||||
|
<dependency>
|
||||||
|
<groupId>org.aspectj</groupId>
|
||||||
|
<artifactId>aspectjweaver</artifactId>
|
||||||
|
<version>${aspectj.version}</version>
|
||||||
|
</dependency>
|
||||||
|
|
||||||
|
<!-- utils -->
|
||||||
|
<dependency>
|
||||||
|
<groupId>org.slf4j</groupId>
|
||||||
|
<artifactId>slf4j-api</artifactId>
|
||||||
|
<version>${org.slf4j.version}</version>
|
||||||
|
</dependency>
|
||||||
|
|
||||||
|
<dependency>
|
||||||
|
<groupId>ch.qos.logback</groupId>
|
||||||
|
<artifactId>logback-classic</artifactId>
|
||||||
|
<version>${logback.version}</version>
|
||||||
|
</dependency>
|
||||||
|
|
||||||
|
<dependency>
|
||||||
|
<groupId>ch.qos.logback</groupId>
|
||||||
|
<artifactId>logback-core</artifactId>
|
||||||
|
<version>${logback.version}</version>
|
||||||
|
</dependency>
|
||||||
|
|
||||||
|
<!-- unit test -->
|
||||||
|
<dependency>
|
||||||
|
<groupId>junit</groupId>
|
||||||
|
<artifactId>junit</artifactId>
|
||||||
|
<version>${junit.version}</version>
|
||||||
|
</dependency>
|
||||||
|
|
||||||
|
</dependencies>
|
||||||
|
|
||||||
|
<build>
|
||||||
|
<finalName>aspectj</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>${maven-compiler-plugin.version}</version>
|
||||||
|
<configuration>
|
||||||
|
<source>${source.version}</source>
|
||||||
|
<target>${source.version}</target>
|
||||||
|
</configuration>
|
||||||
|
|
||||||
|
</plugin>
|
||||||
|
|
||||||
|
<plugin>
|
||||||
|
<groupId>org.codehaus.mojo</groupId>
|
||||||
|
<artifactId>aspectj-maven-plugin</artifactId>
|
||||||
|
<version>1.7</version>
|
||||||
|
<configuration>
|
||||||
|
<complianceLevel>${source.version}</complianceLevel>
|
||||||
|
<source>${source.version}</source>
|
||||||
|
<target>${source.version}</target>
|
||||||
|
<showWeaveInfo>true</showWeaveInfo>
|
||||||
|
<verbose>true</verbose>
|
||||||
|
<Xlint>ignore</Xlint>
|
||||||
|
<encoding>${project.build.sourceEncoding}</encoding>
|
||||||
|
<!-- Post-compile weaving -->
|
||||||
|
<!--
|
||||||
|
<weaveDependencies>
|
||||||
|
<weaveDependency>
|
||||||
|
<groupId>org.agroup</groupId>
|
||||||
|
<artifactId>to-weave</artifactId>
|
||||||
|
</weaveDependency>
|
||||||
|
<weaveDependency>
|
||||||
|
<groupId>org.anothergroup</groupId>
|
||||||
|
<artifactId>gen</artifactId>
|
||||||
|
</weaveDependency>
|
||||||
|
</weaveDependencies>
|
||||||
|
-->
|
||||||
|
</configuration>
|
||||||
|
<executions>
|
||||||
|
<execution>
|
||||||
|
<goals>
|
||||||
|
<goal>compile</goal>
|
||||||
|
<goal>test-compile</goal>
|
||||||
|
</goals>
|
||||||
|
</execution>
|
||||||
|
</executions>
|
||||||
|
</plugin>
|
||||||
|
|
||||||
|
<!-- <plugin>
|
||||||
|
<groupId>org.apache.maven.plugins</groupId>
|
||||||
|
<artifactId>maven-surefire-plugin</artifactId>
|
||||||
|
<version>2.10</version>
|
||||||
|
<configuration>
|
||||||
|
<argLine>-javaagent:"${settings.localRepository}"/org/aspectj/aspectjweaver/${aspectj.version}/aspectjweaver-${aspectj.version}.jar</argLine>
|
||||||
|
<useSystemClassLoader>true</useSystemClassLoader>
|
||||||
|
<forkMode>always</forkMode>
|
||||||
|
</configuration>
|
||||||
|
</plugin> -->
|
||||||
|
</plugins>
|
||||||
|
</build>
|
||||||
|
|
||||||
|
<properties>
|
||||||
|
<source.version>1.8</source.version>
|
||||||
|
<aspectj.version>1.6.11</aspectj.version>
|
||||||
|
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||||
|
<aspectj.version>1.8.9</aspectj.version>
|
||||||
|
<org.slf4j.version>1.7.21</org.slf4j.version>
|
||||||
|
<logback.version>1.1.7</logback.version>
|
||||||
|
<maven-compiler-plugin.version>3.5.1</maven-compiler-plugin.version>
|
||||||
|
<junit.version>4.12</junit.version>
|
||||||
|
</properties>
|
||||||
|
|
||||||
|
</project>
|
|
@ -0,0 +1,13 @@
|
||||||
|
package com.baeldung.aspectj;
|
||||||
|
|
||||||
|
public class Account {
|
||||||
|
int balance = 20;
|
||||||
|
|
||||||
|
public boolean withdraw(int amount) {
|
||||||
|
if (balance - amount > 0) {
|
||||||
|
balance = balance - amount;
|
||||||
|
return true;
|
||||||
|
} else
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
}
|
|
@ -0,0 +1,30 @@
|
||||||
|
package com.baeldung.aspectj;
|
||||||
|
|
||||||
|
import org.slf4j.Logger;
|
||||||
|
import org.slf4j.LoggerFactory;
|
||||||
|
|
||||||
|
public aspect AccountAspect {
|
||||||
|
private static final Logger logger = LoggerFactory.getLogger(AccountAspect.class);
|
||||||
|
final int MIN_BALANCE = 10;
|
||||||
|
|
||||||
|
pointcut callWithDraw(int amount, Account account):
|
||||||
|
call(boolean Account.withdraw(int)) && args(amount) && target(account);
|
||||||
|
|
||||||
|
before(int amount, Account account) : callWithDraw(amount, account) {
|
||||||
|
logger.info(" Balance before withdrawal: {}", account.balance);
|
||||||
|
logger.info(" Withdraw ammout: {}", amount);
|
||||||
|
}
|
||||||
|
|
||||||
|
boolean around(int amount, Account account) : callWithDraw(amount, account) {
|
||||||
|
if (account.balance - amount >= MIN_BALANCE)
|
||||||
|
return proceed(amount, account);
|
||||||
|
else {
|
||||||
|
logger.info("Withdrawal Rejected!");
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
after(int amount, Account balance) : callAtWithDraw(amount, balance) {
|
||||||
|
logger.info("Balance after withdrawal : {}", balance.balance);
|
||||||
|
}
|
||||||
|
}
|
|
@ -0,0 +1,12 @@
|
||||||
|
package com.baeldung.aspectj;
|
||||||
|
|
||||||
|
import java.lang.annotation.ElementType;
|
||||||
|
import java.lang.annotation.Retention;
|
||||||
|
import java.lang.annotation.RetentionPolicy;
|
||||||
|
import java.lang.annotation.Target;
|
||||||
|
|
||||||
|
@Retention(RetentionPolicy.RUNTIME)
|
||||||
|
@Target(ElementType.METHOD)
|
||||||
|
public @interface Secured {
|
||||||
|
public boolean isLocked() default false;
|
||||||
|
}
|
|
@ -0,0 +1,23 @@
|
||||||
|
package com.baeldung.aspectj;
|
||||||
|
|
||||||
|
import org.slf4j.Logger;
|
||||||
|
import org.slf4j.LoggerFactory;
|
||||||
|
|
||||||
|
public class SecuredMethod {
|
||||||
|
private static final Logger logger = LoggerFactory.getLogger(SecuredMethod.class);
|
||||||
|
|
||||||
|
@Secured(isLocked = true)
|
||||||
|
public void lockedMethod() throws Exception {
|
||||||
|
logger.info("lockedMethod");
|
||||||
|
}
|
||||||
|
|
||||||
|
@Secured(isLocked = false)
|
||||||
|
public void unlockedMethod() {
|
||||||
|
logger.info("unlockedMethod");
|
||||||
|
}
|
||||||
|
|
||||||
|
public static void main(String[] args) throws Exception {
|
||||||
|
SecuredMethod sv = new SecuredMethod();
|
||||||
|
sv.lockedMethod();
|
||||||
|
}
|
||||||
|
}
|
|
@ -0,0 +1,27 @@
|
||||||
|
package com.baeldung.aspectj;
|
||||||
|
|
||||||
|
import org.aspectj.lang.ProceedingJoinPoint;
|
||||||
|
import org.aspectj.lang.annotation.Around;
|
||||||
|
import org.aspectj.lang.annotation.Aspect;
|
||||||
|
import org.aspectj.lang.annotation.Pointcut;
|
||||||
|
import org.slf4j.Logger;
|
||||||
|
import org.slf4j.LoggerFactory;
|
||||||
|
|
||||||
|
@Aspect
|
||||||
|
public class SecuredMethodAspect {
|
||||||
|
private static final Logger logger = LoggerFactory.getLogger(SecuredMethodAspect.class);
|
||||||
|
|
||||||
|
@Pointcut("@annotation(secured)")
|
||||||
|
public void callAt(Secured secured) {
|
||||||
|
}
|
||||||
|
|
||||||
|
@Around("callAt(secured)")
|
||||||
|
public Object around(ProceedingJoinPoint pjp, Secured secured) throws Throwable {
|
||||||
|
if (secured.isLocked()) {
|
||||||
|
logger.info(pjp.getSignature().toLongString() + " is locked");
|
||||||
|
return null;
|
||||||
|
} else {
|
||||||
|
return pjp.proceed();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
|
@ -0,0 +1,8 @@
|
||||||
|
<aspectj>
|
||||||
|
<aspects>
|
||||||
|
<aspect name="com.baeldung.aspectj.SecuredMethodAspect"/>
|
||||||
|
<weaver options="-verbose -showWeaveInfo">
|
||||||
|
<include within="com.baeldung.aspectj.*"/>
|
||||||
|
</weaver>
|
||||||
|
</aspects>
|
||||||
|
</aspectj>
|
|
@ -0,0 +1,18 @@
|
||||||
|
<?xml version="1.0" encoding="UTF-8"?>
|
||||||
|
<configuration>
|
||||||
|
|
||||||
|
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
|
||||||
|
<layout class="ch.qos.logback.classic.PatternLayout">
|
||||||
|
<pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg %n</pattern>
|
||||||
|
</layout>
|
||||||
|
</appender>
|
||||||
|
|
||||||
|
<logger name="com.baeldung.hazelcast" level="INFO" additivity="false">
|
||||||
|
<appender-ref ref="STDOUT" />
|
||||||
|
</logger>
|
||||||
|
|
||||||
|
<root level="DEBUG">
|
||||||
|
<appender-ref ref="STDOUT" />
|
||||||
|
</root>
|
||||||
|
|
||||||
|
</configuration>
|
|
@ -0,0 +1,27 @@
|
||||||
|
package com.baeldung.aspectj.test;
|
||||||
|
|
||||||
|
import static org.junit.Assert.*;
|
||||||
|
|
||||||
|
import org.junit.Before;
|
||||||
|
import org.junit.Test;
|
||||||
|
|
||||||
|
import com.baeldung.aspectj.Account;
|
||||||
|
|
||||||
|
public class AccountTest {
|
||||||
|
private Account account;
|
||||||
|
|
||||||
|
@Before
|
||||||
|
public void before() {
|
||||||
|
account = new Account();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void givenBalance20AndMinBalance10_whenWithdraw5_thenSuccess() {
|
||||||
|
assertTrue(account.withdraw(5));
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void givenBalance20AndMinBalance10_whenWithdraw100_thenFail() {
|
||||||
|
assertFalse(account.withdraw(100));
|
||||||
|
}
|
||||||
|
}
|
|
@ -0,0 +1,14 @@
|
||||||
|
package com.baeldung.aspectj.test;
|
||||||
|
|
||||||
|
import org.junit.Test;
|
||||||
|
|
||||||
|
import com.baeldung.aspectj.SecuredMethod;
|
||||||
|
|
||||||
|
public class SecuredMethodTest {
|
||||||
|
@Test
|
||||||
|
public void testMethod() throws Exception {
|
||||||
|
SecuredMethod service = new SecuredMethod();
|
||||||
|
service.unlockedMethod();
|
||||||
|
service.lockedMethod();
|
||||||
|
}
|
||||||
|
}
|
Loading…
Reference in New Issue