四季如風

package com.hjide.aop;
 
public interface UserService {
	public User getUser(int id) throws Exception;
	public void save(User u) throws Exception;
	public int delete(User u) throws Exception;
}

package com.hjide.aop;
 
public class UserServiceImpl implements UserService {
 
	public int delete(User u)  throws Exception{
		System.out.println("delete");
		return 0;
	}
 
	public User getUser(int id) throws Exception {
		User u = new User();
		u.setId(1);
		u.setName("new user");
		u.setType(2);
		System.out.println("getUser");
		return u;
	}
 
	public void save(User u) throws Exception {
		System.out.println("save");
	}
 
}

package com.hjide.aop;
 
public class User {
	private int id;
	private String name;
	private int type;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getType() {
		return type;
	}
	public void setType(int type) {
		this.type = type;
	}
	public String toString(){
		StringBuilder sb = new StringBuilder();
		sb.append("id=");
		sb.append(id);
		sb.append(",");
		sb.append("name=");
		sb.append(name);
		sb.append(",");
		sb.append("type=");
		sb.append(type);
		sb.append(",");
		return sb.toString();
	}
}

package com.hjide.aop;
 
import org.aspectj.lang.JoinPoint;
 
public class Permission  {
 
	public void permissionCheck(JoinPoint jp)
			throws AccessControlException {
		System.out.print("Permission Check.");
 
		Object[] objs = jp.getArgs();
		for(Object o:objs){
			if(o instanceof User){
				User u = (User)o;
				if(u.getType()==3)
					throw new AccessControlException("Permission denied.");
			}
		}
		System.out.println("OK");
 
	}
 
}

package com.hjide.aop;
 
import org.aspectj.lang.JoinPoint;
 
public class Log{
 
	public void writelog(JoinPoint jp) throws Throwable {
		System.out.print("write log:");
 
		Object[] objs = jp.getArgs();
		for(Object o:objs){
			System.out.println("value="+o);
		}
 
	}
 
}

package com.hjide.aop;
 
public class AccessControlException extends Exception {
 
	public AccessControlException() {
		super();
		// TODO Auto-generated constructor stub
	}
 
	public AccessControlException(String arg0, Throwable arg1) {
		super(arg0, arg1);
		// TODO Auto-generated constructor stub
	}
 
	public AccessControlException(String arg0) {
		super(arg0);
		// TODO Auto-generated constructor stub
	}
 
	public AccessControlException(Throwable arg0) {
		super(arg0);
		// TODO Auto-generated constructor stub
	}
 
}

package com.hjide.aop;
 
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
 
public class Test {
	public static void main(String[] args){
		BeanFactory factory = new ClassPathXmlApplicationContext("applicationContext.xml");
		UserService us = (UserService)factory.getBean("UserService");
		User u;
		try {
			u = us.getUser(1);
			System.out.println("======================================");
			u.setId(3);
			u.setType(2);
			try {
				us.save(u);
			} catch (Exception e1) {
				System.err.println(e1.getMessage());
			}
			System.out.println("======================================");
			u.setType(3);
			try {
				us.delete(u);
			} catch (Exception e) {
				System.err.println(e.getMessage());
			}
			System.out.println("======================================");
		} catch (Exception e2) {
			// TODO Auto-generated catch block
			e2.printStackTrace();
		}
 
	}
}