spring_static_proxy

UserManager.java

package com.bjsxt.spring;

public interface UserManager {

	public void addUser(String username, String password);
	
	public void deleteUser(int id);
	
	public void modifyUser(int id, String username, String password);
	
	public String findUserById(int id);
}

UserManagerImpl.java

package com.bjsxt.spring;

public class UserManagerImpl implements UserManager {

	public void addUser(String username, String password) {
		System.out.println("-------UserManagerImpl.addUser()----------");
	}

	public void deleteUser(int id) {
		System.out.println("-------UserManagerImpl.deleteUser()----------");
	}

	public String findUserById(int id) {
		System.out.println("-------UserManagerImpl.findUserById()----------");
		return null;
	}

	public void modifyUser(int id, String username, String password) {
		System.out.println("-------UserManagerImpl.modifyUser()----------");
	}
	
//	private void checkSecurity() {
//		System.out.println("----------checkSecurity()---------------");
//	}
}

UserManagerImplProxy.java

package com.bjsxt.spring;

public class UserManagerImplProxy implements UserManager {
	
	private UserManager userManager;
	
	public UserManagerImplProxy(UserManager userManager) {
		this.userManager = userManager;
	}
	
	public void addUser(String username, String password) {
		checkSecurity();
		this.userManager.addUser(username, password);
	}

	public void deleteUser(int id) {
		checkSecurity();
		this.userManager.deleteUser(id);
	}

	public String findUserById(int id) {
		return null;
	}

	public void modifyUser(int id, String username, String password) {
	}
	
	private void checkSecurity() {
	System.out.println("----------checkSecurity()---------------");
 }
}

Client.java

package com.bjsxt.spring;

public class Client {

	public static void main(String[] args) {
		//UserManager userManager = new UserManagerImpl();
		
		UserManager userManager = new UserManagerImplProxy(new UserManagerImpl());
		//userManager.addUser("张三", "123");
		userManager.deleteUser(1);
	}
}