实现简单Spring框架核心-------！！

//config.properties配置文件proxyName=java.util.ArrayList#proxyName=mySpringFramework.ProxyFactoryBeanproxyName.advice=mySpringFramework.CountTimeproxyName.target=java.util.ArrayList//代理类package mySpringFramework;import java.lang.reflect.InvocationHandler;import java.lang.reflect.Method;import java.lang.reflect.Proxy;import proxyTest.Advice;public class ProxyFactoryBean {private Object target;private Advice ad;public Object getTarget() {return target;}public void setTarget(Object target) {this.target = target;}public Advice getAd() {return ad;}public void setAd(Advice ad) {this.ad = ad;}public Object getProxy(){Object obj = Proxy.newProxyInstance(target.getClass().getClassLoader(),target.getClass().getInterfaces(), new InvocationHandler() {@Overridepublic Object invoke(Object proxy, Method method, Object[] args)throws Throwable {ad.beginTime(method);Object me = method.invoke(target, args);ad.endTime(method);return me;}});return obj;}}//Bean工厂创建Bean对象或者代理类，经过类型判断是否为代理类package mySpringFramework;import java.io.IOException;import java.io.InputStream;import java.util.Properties;import proxyTest.Advice;public class BeanFactory {private Properties props = new Properties();public BeanFactory(InputStream ips){try {this.props.load(ips);ips.close();} catch (IOException e) {e.printStackTrace();}}public Object getBean(String name) throws Exception{Object obj = null;obj = Class.forName(props.getProperty(name)).newInstance();if(obj instanceof ProxyFactoryBean){Object target = Class.forName(props.getProperty(name+".target")).newInstance();Advice advice = (Advice)Class.forName(props.getProperty(name+".advice")).newInstance();ProxyFactoryBean pfb = new ProxyFactoryBean();pfb.setTarget(target);pfb.setAd(advice);obj = pfb.getProxy();}return obj;}}//需要添加计时功能的功能类package mySpringFramework;import java.lang.reflect.Method;import proxyTest.Advice;public class CountTime implements Advice{private long beginTime;@Overridepublic void endTime(Method me) {System.out.println(me.getName()+"执行了"+(System.currentTimeMillis()-beginTime));}@Overridepublic void beginTime(Method me) {beginTime = System.currentTimeMillis();}}//单元测试类package mySpringFramework;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.InputStream;import java.util.Collection;public class Test {public static void main(String[] args) throws Exception {InputStream ips = Test.class.getResourceAsStream("config.properties");BeanFactory bf = new BeanFactory(ips);Collection list = (Collection)bf.getBean("proxyName");list.add("abv");list.add("zhangsa");System.out.println(list.size());}}

 

 

 

觉得好的给个脚印呗！！！！HOHO