MyPerson
Service.java代码如下:
class="java" name="code">
package com.shihuan.jdkaop.service;
public interface MyPersonService {
public void findPerson(String name);
}
MyPersonServiceImpl.java代码如下:
package com.shihuan.jdkaop.service.impl;
import com.shihuan.jdkaop.service.MyPersonService;
public class MyPersonServiceImpl implements MyPersonService {
public String myproperty = "shihuan...";
@Override
public void findPerson(String name) {
System.out.println("在com.shihuan.jdkaop.service.impl.MyPersonServiceImpl.findPerson()中: " + name);
}
}
SecurityHandler.java代码如下:
package com.shihuan.jdkaop.handler;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import com.shihuan.jdkaop.service.MyPersonService;
import com.shihuan.jdkaop.service.impl.MyPersonServiceImpl;
public class SecurityHandler implements InvocationHandler {
private Object targetObject;
public Object createProxyInstance(Object targetObject){
this.targetObject = targetObject;
//创建一个代理对象,此对象是一个与目标对象实现了相同接口的对象,第一个参数为目标对象的类加载器,第二个参数为目标对象所实现的所有接口,第三个参数为实现了InvocationHandler接口的对象实例,这里是SecurityHandler本身
return Proxy.newProxyInstance(this.targetObject.getClass().getClassLoader(), this.targetObject.getClass().getInterfaces(), this);
}
/**
* InvocationHandler接口的方法
* @param proxy 代理对象
* @param method 被拦截到的方法
* @param args 被拦截到的方法的输入参数
* @return 代理对象最后又将拦截到的方法处理委派回给目标对象自己处理
*/
@Override
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
MyPersonServiceImpl bean = (MyPersonServiceImpl) this.targetObject;
Object result = null;
System.out.println("before advice()");
result = method.invoke(bean, args);
System.out.println("after advice()");
System.out.println("参数个数: " + args.length);
for (int i = 0; i < args.length; i++) {
System.out.println("每一个具体的参数值: " + args[i]);
}
System.out.println(bean.myproperty);
return result;
}
}
TestMyAop.java代码如下:
package com.shihuan.jdkaop.test;
import com.shihuan.jdkaop.handler.SecurityHandler;
import com.shihuan.jdkaop.service.MyPersonService;
import com.shihuan.jdkaop.service.impl.MyPersonServiceImpl;
public class TestMyAop {
/**
* @param args
*/
public static void main(String[] args) {
SecurityHandler myhandler = new SecurityHandler();
MyPersonService mybz = (MyPersonService) myhandler.createProxyInstance(new MyPersonServiceImpl());
mybz.findPerson("yushibo");
}
}
- java实现aop案例.rar (3 KB)
- 下载次数: 0