java静态代理

java静态代理实现:

1.创建接口

  

package com.test.serv;

public interface UserManagerServ {
    /**
     * 接口
     */
	public void addUser(String name,String pass);
	public void editUser(int userId,String name,String pass);
	public void deleUser(int userId);
	public void findUser(String name);
	
}

 

2.创建实现类

  

package com.test.servImp;

import com.test.serv.UserManagerServ;

public class UserManagerServImp implements UserManagerServ {
   
	/**
	 * 实现类
	 */
	public UserManagerServImp() {
		// TODO Auto-generated constructor stub
		
	}
	
	public void addUser(String name, String pass) {
		// TODO Auto-generated method stub
      System.out.println("---增加用户操作!---"+"用户:"+name+" 密码:"+pass);
	}

	public void deleUser(int userId) {
		// TODO Auto-generated method stub
      System.out.println("---用户删除操作---");
	}

	public void editUser(int userId, String name, String pass) {
		// TODO Auto-generated method stub
     System.out.println("---用户修改操作---");
	}

	public void findUser(String name) {
		// TODO Auto-generated method stub
		System.out.println("---用户查询操作 ---");

	}

}

 

3.创建 代理类

 

package com.test.servImp;

import com.test.serv.UserManagerServ;

public class UserManagerServImpProxy implements UserManagerServ {
      
	/**
	 * 静态代理类
	 */
	private UserManagerServ userManagerServ;
                 //代理类构造方法
	public UserManagerServImpProxy(UserManagerServ userManagerServ) {
		this.userManagerServ =userManagerServ;
		// TODO Auto-generated constructor stub
	}

	public void addUser(String name, String pass) {
		// TODO Auto-generated method stub
		checkUser();
       this.userManagerServ.addUser(name, pass);
		
	}

	public void deleUser(int userId) {
		// TODO Auto-generated method stub
		checkUser();
        this.userManagerServ.deleUser(userId);
	}

	public void editUser(int userId, String name, String pass) {
		// TODO Auto-generated method stub
		checkUser();
		this.userManagerServ.editUser(userId, name, pass);
	}

	public void findUser(String name) {
		// TODO Auto-generated method stub
		checkUser();
		this.userManagerServ.findUser(name);
	}
	
	public void checkUser(){
		
			System.out.println("---检测用户名密码！---");
   	}
	
}

 4.实现静态代理调用

 

package com.test.util;

import com.test.serv.UserManagerServ;
import com.test.servImp.UserManagerServImp;
import com.test.servImp.UserManagerServImpProxy;

public class WorkUser {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
// 正常调用
//       UserManagerServ userServ= new UserManagerServImp();
//		
//		userServ.addUser("测试", "111");
		/**
		 * 静态代理
       *UserManagerServ  接口；
       *UserManagerServImpProxy 代理类；
       *UserManagerServImp()  实现类
		 */
		UserManagerServ user= new UserManagerServImpProxy(new UserManagerServImp());
		user.addUser("wzp", "666");
		
	}

}

 

注:静态代理中代理类要实现的接口和实现类需要实现的接口一样。