databasemock.java

一个很精简的struts2实例工程,对入门很有用

package com.jamesby.struts2.persist;

import java.util.ArrayList;
import java.util.List;

public class DataBaseMock {
	private static List<User> _cache = new ArrayList<User>();

	private static int userid = 0;
	static {
		User user = new User();
		user.setUserid(new Integer(0));
		user.setUsername("admin");
		user.setPassword("12345688");
		user.setFrom(1);// 北京
		user.setSex(1);// 男
		user.setAge(18);
		_cache.add(user);
	}
	public static User selectUserByUsernameAndPassword(String username,String password)
	{
		for (User u : _cache) {
			if (u.getUsername().equals(username)&&u.getPassword().equals(password)) {
				return u;
			}
		}
		return null;
	}
	public static List<User> selectAllUser()
	{
		return _cache;
	}
	public static int getNewUserId() {
		return ++userid;
	}

	public static void saveUser(User user) {
		_cache.add(user);
	}

	public static void updateUser(User user) {
		deleteUser(user);
		saveUser(user);
	}

	public static void deleteUser(User user) {
		for (User u : _cache) {
			if (u.getUserid().intValue() == user.getUserid().intValue()) {
				_cache.remove(u);
				break;
			}
		}
	}
	public static User getUser(Integer userid) {
		return _cache.get(userid);
	}
}