package reflection;import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;public class testReflection {public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {String str="reflection.T";//获取类Class c=Class.forName(str);//获取类路径URL z=c.getResource("");URL s=c.getClassLoader().getResource("");//得到class在类中的地址ClassLoader d=c.getClassLoader();//得到class，c所实现的接口Class[] f=c.getInterfaces()[0];Class[] f=c.getInterfaces();System.out.println(z);System.out.println(s);System.out.println(d);System.out.println(f);//getClassLoader().getResource(fileName)//用获取到的类new一个新的对象Object o=c.newInstance();//接收该对象中所有的方法Method[] method = c.getMethods();System.out.println("此元素上的注释："+c.getDeclaredAnnotations());for(Method m:method) {if(m.getName().equals("m")) {//方法选择第一个参数传递对象，后面的参数传递方法参数
            m.invoke(o);System.out.println("哈希码："+m.hashCode());}if(m.getName().equals("b")) {m.invoke(o,1,2);//得到参数类型for(Class paramtype : m.getParameterTypes()) {System.out.println("参数类型："+paramtype.getName());}}}}}
/*//instanceof方法测试args返回的是否是一个class实例 if(args[0] instanceof  String)* @param args* */
class T {public T(){System.out.println("构造函数被调用了");}public void m() {System.out.println("m函数被调用了");}public void b(int i,int j) {System.out.println("b函数的结果:"+i+j);}
}

package proxy;public class Notice{String type;String name;String data;String address;String vill;String upFile;String num;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getData() {return data;}public void setData(String data) {this.data = data;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}public String getVill() {return vill;}public void setVill(String vill) {this.vill = vill;}public String getUpFile() {return upFile;}public void setUpFile(String upFile) {this.upFile = upFile;}public String getNum() {return num;}public void setNum(String num) {this.num = num;}public String getType() {return type;}public void setType(String type) {this.type = type;}
}

package cn.test;import java.lang.reflect.Field;
import java.util.HashMap;public class ReflectDemo {static HashMap<String,String> data;static{data=new HashMap<String,String>();data.put("name","拟征收土地公告");data.put("type","测试公告");data.put("data","2017-01-12");data.put("address","成都市青羊区");data.put("vill","二道街");data.put("upFile","文件具体的内容");data.put("num","文号:国:001");data.put("type","测试公告");}public static void main(String[] args)throws Exception {Notice obj=new Notice();test2(obj,data);System.out.println(obj.getAddress());}public static void test2(Notice obj,HashMap<String,String> data) throws Exception {Class cls=obj.getClass();//getDeclaredFields()：获得某个类的所有声明的字段Field[] fields = cls.getDeclaredFields();for(Field field : fields){String item=data.get(field.getName());field.set(obj,item);}}}

package proxy;import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;public class myProxyDemo implements InvocationHandler{Object aa;public Object newProxy(Object aa) {this.aa=aa;        //返回一个指定接口的代理类实例（获取类加载地址，获取类实现的接口）return Proxy.newProxyInstance(aa.getClass().getClassLoader(),aa.getClass().getInterfaces(), this);}int count;public int count() {return count;}@Overridepublic Object invoke(Object proxy, Method method, Object[] args) throws Throwable {befor(method,args);        //调用此实例Object ad = method.invoke(this.aa,args);return null;}　　　//可通过重写此方法完成不同功能public void befor(Method method, Object[] args){System.out.println("----------");}}

public class TestProxy {//UserManager一个普通的javabeenpublic static void main(String[] args) {myProxyDemo handler=new myProxyDemo ();UserManager userManager=(UserManager) handler.newProxy(new UserManagerImpl());userManager.addUser("ad", "da");}
}