Terry.Li-彬

虛其心，可解天下之問；專其心，可治天下之學；靜其心，可悟天下之理；恒其心，可成天下之業。

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代理模式

代理類，可以代理任何接口封裝的類

package com.lucky.proxy.util;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.Method;
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import java.lang.reflect.Proxy;
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public class ProxyMode implements InvocationHandler {
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private static ProxyMode instance = null;
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private Object delegete;
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private ProxyMode(){
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}
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public static ProxyMode getInstance(){
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if (null == instance) {
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instance = new ProxyMode();
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}
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return instance;
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}
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public Object bind(Object delegete){
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this.delegete = delegete;
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return Proxy.newProxyInstance(delegete.getClass().getClassLoader(), delegete.getClass().getInterfaces(), this);
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}
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
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// TODO Auto-generated method stub
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System.out.println("調用了InvoactionHandler的invoke方法..");
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Object result = method.invoke(delegete, args);
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return result;
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}
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}
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接口

package com.lucky.proxy;
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public interface IProxyClass {
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public String sayHello(String str);
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public void print();
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public String getInnerStr();
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}
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接口實現類

package com.lucky.proxy;
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public class ProxyClass implements IProxyClass {
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private String innerStr;
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public ProxyClass(){}
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public ProxyClass(String str){
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innerStr = str;
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}
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public String getInnerStr() {
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return innerStr;
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}
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public void setInnerStr(String innerStr) {
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this.innerStr = innerStr;
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}
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public void print() {
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// TODO Auto-generated method stub
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System.out.println("調用代理實現類打印信息");
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}
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public String sayHello(String str) {
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// TODO Auto-generated method stub
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System.out.println(str+" 你好!");
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return str+" 你好!";
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}
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}
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測試類

package com.lucky.proxy.test;
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import com.lucky.proxy.IProxyClass;
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import com.lucky.proxy.IProxyClass2;
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import com.lucky.proxy.ProxyClass;
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import com.lucky.proxy.ProxyClass2;
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import com.lucky.proxy.util.ProxyMode;
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public class ProxyTest {
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/**
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* @param args
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*/
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public static void main(String[] args) {
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// TODO Auto-generated method stub
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IProxyClass proxyInterface = (IProxyClass) ProxyMode.getInstance().bind(new ProxyClass("構造"));
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proxyInterface.sayHello("李彬");
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proxyInterface.print();
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System.out.println(proxyInterface.getInnerStr());
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// IProxyClass2 proxyInterface = (IProxyClass2) ProxyMode.getInstance().bind(new ProxyClass2());
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// proxyInterface.sayHello("李彬");
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// proxyInterface.print();
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}
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}
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用反射實現代理模式

package com.lucky.proxy.util;
2

public class ProxyReflectMode {
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private static ProxyReflectMode instance = null;
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private ProxyReflectMode(){}
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public static ProxyReflectMode getInstance(){
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if (null == instance) {
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instance = new ProxyReflectMode();
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}
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return instance;
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}
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public Object getProxyObject(Class cls){
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String className = cls.getName();
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Object obj = null;
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try {
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obj = Class.forName(className).newInstance();
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} catch (InstantiationException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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} catch (ClassNotFoundException e) {
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// TODO Auto-generated catch block
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e.printStackTrace();
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}
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return obj;
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}
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}
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posted on 2007-09-22 21:59 禮物閱讀(389) 評論(1) 編輯收藏

Terry.Li-彬

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