Ibatis3.x实例

Ibatis3.x实例

说明：此文档和之前发布的Ibatis2.x实例时我学习时做的实例，测试都已通过，将实例拿出来与大家分享，共同学习。浏览实例的时候注意他们之间的异同，希望对你有所帮助。

 

一、SqlMapConfig.xml

 

二、实体：

2.1、User.java

package com.beans ;
public class User {
	private long id ;
	private String username ;
	private String password ;
	public long getId() {
		return id;
	}
	public void setId(long id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String toString(){
		return "id: "+id+"    username: "+username + "    password: "+password ;
	}
}

 

2.2、映射文件

User.xml

 

	
		insert into User(id, username, password) values(#{id}, #{username}, #{password})
	
	
	
		delete from User where id = #{id}
	
	
	id, username, password
	
	
		select  from User 
	
	
	
		select  from User where id = #{id, javaType=long, jdbcType=BIGINT}
	
	
	
		select * from User as u where u.username like CONCAT('%',#{username},'%')
	
	
	
		update User set
					username = #{username},
					password = #{password}
		where id = #{id}
	

 

 3、接口

UserDao.java

package com.dao;

import java.util.List;

import com.beans.User;

public interface UserDao {
	/**
	 * 插入User对象
	 * @param user
	 * @return 插入成功的记录数
	 */
	public int addUser(User user);
	/**
	 * 根据Id删除User
	 * @param id
	 * @return  删除成功的记录数
	 */
	public int deleteUserById(long id);
	/**
	 * 查出所有的User对象
	 * @return
	 */
	public List findAllUsers();
	/**
	 * 根据Id查找用户
	 * @param id
	 * @return
	 */
	public User findUserById(long id);
	/**
	 * 更新用户信息
	 * @param user
	 * @return 更新的数据数目
	 */
	public int update(User user);
	/**
	 * 根据用户名查找User    模糊查询
	 * @param username
	 * @return
	 */
	public List findUserByName(String username);
}

 

四、实现

UserDaoImpl.java

package com.dao.impl;

import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import java.util.List;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import com.beans.User;
import com.dao.UserDao;

public class UserDaoImpl implements UserDao {
	private static SqlSessionFactory sqlSessionFactory;
	static {
		try {
//			Properties props = Resources.getResourceAsProperties("dbConfig.properties");
			Reader reader = Resources.getResourceAsReader("SqlMapConfig.xml");
			sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
//			sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader,"development");
			//如果sqlMapCofig中没有引入dbConfig.properties文件时，可以使用这种方式引入
			//sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader,props);
			reader.close();
			
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public SqlSession getSqlSession(){
		return sqlSessionFactory.openSession() ;
	}
	
	@Override
	public int addUser(User user) {
		int successNum =0 ;
		SqlSession sqlSession = getSqlSession();
		try {
			successNum = sqlSession.insert("addUser", user);
			sqlSession.commit() ;
		}finally{
			sqlSession.close() ;
		}
		return successNum ;
	}

	@Override
	public int deleteUserById(long id) {
		int successNum =0 ;
		SqlSession sqlSession = getSqlSession();
		try {
			successNum = sqlSession.delete("deleteUserById", id);
			sqlSession.commit() ;
		}finally{
			sqlSession.close() ;
		}
		return successNum;
	}

	@SuppressWarnings("unchecked")
	@Override
	public List findAllUsers() {
		List users = new ArrayList();
		SqlSession sqlSession = getSqlSession();
		try {
			users = sqlSession.selectList("findAllUsers");
			sqlSession.commit() ;
		} finally{
			sqlSession.close() ;
		}
		return users;
	}

	@Override
	public User findUserById(long id) {
		User user = new User();
		SqlSession sqlSession = getSqlSession();
		try {
			user = (User) sqlSession.selectOne("findUserById", id);
			sqlSession.commit() ;
		}finally{
			sqlSession.close() ;
		}
		return user;
	}

	@Override
	public List findUserByName(String name) {
		List users = new ArrayList();
		SqlSession sqlSession = getSqlSession();
		try {
			users = sqlSession.selectList("findUserByName", name);
			sqlSession.commit() ;
		} finally{
			sqlSession.close() ;
		}
		return users;
	}

	@Override
	public int update(User user) {
		int updateNumber = 0 ;
		SqlSession sqlSession = getSqlSession();
		try {
			updateNumber = sqlSession.update("updateUser", user);
			sqlSession.commit() ;
		} finally{
			sqlSession.close() ;
		}
		return updateNumber;
	}

	
}

 

 五、测试类：

UserDaoImplTester.java

package com.dao.impl;

import java.util.List;

import org.junit.Before;
import org.junit.Test;

import com.beans.User;
import com.dao.UserDao;

public class UserDaoImplTester {
	private UserDao userDao ;

	@Before
	public void setUp() throws Exception {
		userDao = new UserDaoImpl() ;
	}

	@Test
	public void testAddUser() {
		User user = new User();
		user.setId(12);
		user.setPassword("XXXX");
		user.setUsername("XXXX");
		userDao.addUser(user);
	}

	@Test
	public void testDeleteUserById() {
		userDao.deleteUserById(10);
	}

	@Test
	public void testFindAllUsers() {
		List users = userDao.findAllUsers();
		for(User user : users){
			System.out.println(user);
		}
	}

	@Test
	public void testFindUserById() {
		User user = userDao.findUserById(1);
		System.out.println(user);
	}

	@Test
	public void testFindUserByName() {
		List users = userDao.findUserByName("w");
		for(User user : users){
			System.out.println(user);
		}
	}

	@Test
	public void testUpdate() {
		User user = userDao.findUserById(4);
		System.out.println(user);
		
		user.setUsername("海贼王");
		user.setPassword("路飞");
		userDao.update(user);
		user = userDao.findUserById(4);
		System.out.println(user);
		
	}

}

  

 六、日志文件：

为了方便大家查看sqlMap运行时到底使用的是什么Sql语句，此处将log4j.properties发出来，将此文件放在calsspath下后，运行时，控制台中将会打印出sql语句和出入的参数。

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n


log4j.logger.com.ibatis=debug
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=debug
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=debug
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=debug
log4j.logger.java.sql.Connection=debug
log4j.logger.java.sql.Statement=debug
log4j.logger.java.sql.PreparedStatement=debug,stdout

 

 

七、其他：

   附件中是我找的的Ibatis3.x的资料，Ibatis3.x-reference-EN.pdf虽然是英文的，但是还是很好理解的，另外的是在网上看到的，也一起发出来，和大家分享。。。