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JavaÔÚJDK1.3Ö®ºó¼ÓÈëÁË¿ÉÐÖú¿ª·¢¶¯Ì¬´úÀí¹¦ÄܵÄAPI.ʹÓö¯Ì¬´úÀí£¬¿ÉÒÔʹһ¸ö´¦ÀíÕߣ¨´úÀí£©·þÎñÓÚ¸÷¸ö¶ÔÏó¡£´´½¨Ò»¸ö¶¯Ì¬´úÀíÀàÖ»ÐèʵÏÖjava.lang.reflect.InvocationHandler½Ó¿Ú¡£
ÏÂÃæ´´½¨Ò»¸ö´¦ÀíÈÕÖ¾µÄ¶¯Ì¬´úÀíÀàLogHandlerÈ¥´úÀíHelloSpeakerÀà
Ê×ÏÈ´´½¨HelloSpeakerµÄ½Ó¿Ú
package com.test;
public interface IHello {
public void sayHello(String name);
}
È»ºó´´½¨HelloSeaker
package com.test;
public class HelloSpeaker implements IHello {
public void sayHello(String name) {
System.out.println("hello:"+name);
}
}
×îºó´´½¨LogHandlerÀà
package com.test;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.logging.Logger;
public class LogHandler implements InvocationHandler {
private Logger logger = Logger.getLogger(this.getClass().getName());
private Object delegate;
public Object bind(Object delegate) {
this.delegate = delegate;
return Proxy.newProxyInstance(delegate.getClass().getClassLoader(),
delegate.getClass().getInterfaces(), this);
}
public Object invoke(Object proxy, Method method, Object[] args)
throws Throwable {
Object result = null;
try {
logger.info("method start..." + method);
result = method.invoke(delegate, args);
logger.info("method end..." + method);
} catch (Exception e) {
logger.info(e.getMessage());
}
return result;
}
}
ºÃÁË£¬ÏÖÔÚÎÒÃDZàдһ¸ö²âÊÔÀàDemo
package com.test;
public class Demo {
public Demo() {
// TODO Auto-generated constructor stub
}
/**
* @param args
*/
public static void main(String[] args) {
LogHandler logHandler = new LogHandler();
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public class test {
public static void main(String[] args) {
// TODO Auto-generated method stub
}
public void apublic() {
//public º¯Êý
}
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