更新案例

java-aspectj-agent/pom.xml

@@ -0,0 +1,25 @@
+<?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>

java-aspectj-agent/src/main/java/cn/x47/ltw/Main.java

@@ -0,0 +1,19 @@
+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);
+
+    }
+}

java-aspectj-agent/src/main/java/cn/x47/ltw/ProfilingAspect.java

@@ -0,0 +1,26 @@
+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;
+    }
+}

java-aspectj-agent/src/main/resources/META-INF/aop.xml

@@ -0,0 +1,15 @@
+<!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>