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xking
2022-08-28 11:43:13 +08:00
parent 648ebe5708
commit 756c4f7381
14 changed files with 346 additions and 1 deletions
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.gitignore vendored Normal file
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target/
**/target/**
!.mvn/wrapper/maven-wrapper.jar
!**/src/main/**/target/
!**/src/test/**/target/
### STS ###
.apt_generated
.classpath
.factorypath
.project
.settings
.springBeans
.sts4-cache
### IntelliJ IDEA ###
.idea
*.iws
*.iml
*.ipr
### NetBeans ###
/nbproject/private/
/nbbuild/
/dist/
/nbdist/
/.nb-gradle/
build/
!**/src/main/**/build/
!**/src/test/**/build/
### VS Code ###
.vscode/

14
README.md
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# LoadTimeWeaving-demo # LoadTimeWeaving-demo
LTW(LoadTimeWeaving)技术实现AOP功能 LTW(LoadTimeWeaving)技术实现AOP功能
参考了：
https://www.eclipse.org/aspectj/doc/released/devguide/ltw-configuration.html
执行步骤：
1.mvn clean package，得到jar包：java-aspectj-agent-1.0-SNAPSHOT
2.把aspectjweaver-1.8.2.jar拷贝到和本jar包同路径下
3.cmd下执行：
java -javaagent:aspectjweaver-1.8.2.jar -cp java-aspectj-agent-1.0-SNAPSHOT.jar cn.x47.ltw.Main

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java-aspectj-agent/pom.xml Normal file
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<?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>
<parent>
<groupId>cn.x47.blog</groupId>
<artifactId>LoadTimeWeaving-demo</artifactId>
<version>1.0</version>
</parent>
<artifactId>java-aspectj-agent</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
</dependency>
</dependencies>
</project>

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java-aspectj-agent/src/main/java/cn/x47/ltw/Main.java Normal file
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package cn.x47.ltw;
import com.alibaba.fastjson.JSON;
import java.util.HashMap;
import java.util.Map;
/**
* @author xuwei
*/
public final class Main {
public static void main(String[] args) {
Map<String, String> map = new HashMap<>(1);
map.put("key", "ssss");
JSON.toJSONString(map);
}
}

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java-aspectj-agent/src/main/java/cn/x47/ltw/ProfilingAspect.java Normal file
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package cn.x47.ltw;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
/**
* @author xuwei
*/
@Aspect
public class ProfilingAspect {
@Pointcut("execution(public * com.alibaba.fastjson.JSON.toJSONString(java.lang.Object))")
public void p2() {
}
@Around("p2()")
public Object profile2(ProceedingJoinPoint pjp) throws Throwable {
System.out.println("A2");
Object proceed = pjp.proceed();
System.out.println(proceed);
System.out.println("q2");
return proceed;
}
}

15
java-aspectj-agent/src/main/resources/META-INF/aop.xml Normal file
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<!DOCTYPE aspectj PUBLIC "-//AspectJ//DTD//EN" "https://www.eclipse.org/aspectj/dtd/aspectj.dtd">
<aspectj>
<weaver>
<!-- only weave classes in our application-specific packages -->
<include within="cn.x47.ltw..*"/>
<include within="com.alibaba.fastjson.*"/>
</weaver>
<aspects>
<!-- weave in just this aspect -->
<aspect name="cn.x47.ltw.ProfilingAspect"/>
</aspects>
</aspectj>

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pom.xml Normal file
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<?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>cn.x47.blog</groupId>
<artifactId>LoadTimeWeaving-demo</artifactId>
<version>1.0</version>
<packaging>pom</packaging>
<name>LoadTimeWeaving-demo</name>
<url>https://www.61dz.com</url>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<modules>
<module>java-aspectj-agent</module>
<module>springboot-aspectj-agent</module>
</modules>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.6</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>2.0.12</version>
</dependency>
</dependencies>
</dependencyManagement>
</project>

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springboot-aspectj-agent/pom.xml Normal file
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<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>cn.x47.blog</groupId>
<artifactId>LoadTimeWeaving-demo</artifactId>
<version>1.0</version>
</parent>
<artifactId>aspectj-agent-springboot</artifactId>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>2.0.12</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.9</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</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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springboot-aspectj-agent/src/main/java/cn/x47/ltw/springboot/TestApplication.java Normal file
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package cn.x47.ltw.springboot;
import com.alibaba.fastjson.JSON;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import java.util.HashMap;
import java.util.Map;
/**
* @author xuwei
*/
@SpringBootApplication
public class TestApplication {
public static void main(String[] args) {
SpringApplication.run(TestApplication.class, args);
Map<String, String> map = new HashMap<>(1);
map.put("key", "ssss");
JSON.toJSONString(map);
}
}

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springboot-aspectj-agent/src/main/java/cn/x47/ltw/springboot/aop/TestAspect.java Normal file
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package cn.x47.ltw.springboot.aop;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
/**
* @author xuwei
*/
@Aspect
public class TestAspect {
@Around("execution(* com.alibaba.fastjson..*.*(..))")
public String parse2String(ProceedingJoinPoint join) {
System.out.println("parse to String before");
String str = "";
try {
str = (String) join.proceed();
System.out.println("result:" + str);
} catch (Throwable e) {
e.printStackTrace();
}
System.out.println("parse to String after");
return str;
}
}

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springboot-aspectj-agent/src/main/java/cn/x47/ltw/springboot/controller/TestController.java Normal file
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package cn.x47.ltw.springboot.controller;
import com.alibaba.fastjson.JSON;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;
import java.util.Map;
/**
* @author xuwei
*/
@RestController
@RequestMapping("/test")
public class TestController {
@GetMapping
public Object test(String a) {
Map<String, String> map = new HashMap<>(1);
map.put("key", a);
return JSON.toJSONString(map);
}
}

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springboot-aspectj-agent/src/main/resources/META-INF/aop.xml Normal file
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<?xml version="1.0" encoding="UTF-8" ?>
<aspectj>
<weaver options="-XnoInline -Xset:weaveJavaxPackages=true -Xlint:ignore -verbose -XmessageHandlerClass:org.springframework.aop.aspectj.AspectJWeaverMessageHandler">
<!--在编织时导入切面类和需要被切入的目标类-->
<include within="cn.x47.ltw..*"/>
<include within="com.alibaba.fastjson..*"/>
</weaver>
<aspects>
<!--指定切面类-->
<aspect name="cn.x47.ltw.springboot.aop.TestAspect"/>
</aspects>
</aspectj>

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springboot-aspectj-agent/src/main/resources/application.yml Normal file
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server:
port: 8080

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springboot-aspectj-agent/src/test/java/cn/x47/ltw/springboot/TestApplicationTests.java Normal file
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package cn.x47.ltw.springboot;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class TestApplicationTests {
@Test
void contextLoads() {
}
}