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update docs

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huoyo 2022-04-23 21:40:21 +08:00
parent ad1f32ddaf
commit bda47960c7
2 changed files with 0 additions and 59 deletions
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37
src/main/java/cn/langpy/kotime/staaop/AgentHandler.java
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package cn.langpy.kotime.staaop;
import cn.langpy.kotime.util.Context;
import javassist.*;
import java.io.IOException;
import java.lang.instrument.ClassFileTransformer;
import java.lang.instrument.IllegalClassFormatException;
import java.security.ProtectionDomain;
public class AgentHandler implements ClassFileTransformer {
public byte[] transform(ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws IllegalClassFormatException {
className = className.replace("/",".");
/**/
try {
CtClass ctClass= ClassPool.getDefault().get(className);
CtMethod[] declaredMethods = ctClass.getDeclaredMethods();
for (CtMethod method : declaredMethods) {
if (Modifier.isStatic(method.getModifiers())) {
method.insertBefore("System.out.println(\"前置--\");");
method.insertAfter("System.out.println(\"后置--\");");
}
}
ctClass.detach();
return ctClass.toBytecode();
} catch (NotFoundException e) {
e.printStackTrace();
} catch (CannotCompileException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return classfileBuffer;
}
}

22
src/main/java/cn/langpy/kotime/staaop/StaticAgent.java
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package cn.langpy.kotime.staaop;
import java.lang.instrument.Instrumentation;
import java.lang.instrument.UnmodifiableClassException;
public class StaticAgent {
public static void agentmain(String agentArgs, Instrumentation inst){
System.out.println("修改静态方法");
/*true 必须 */
inst.addTransformer(new AgentHandler(),true);
Class[] classes = inst.getAllLoadedClasses();
for (Class clazz : classes) {
if (clazz.getName().equals("com.example.demo.controller.Index2Controller")) {
try {
inst.retransformClasses(clazz);
} catch (UnmodifiableClassException e) {
e.printStackTrace();
}
}
}
}
}