MyBatis3.1.1 增上改查源码实例

1. mybatis.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

	<typeAliases>  
		<typeAlias type="com.ibatis.bean.User" alias="User"/>  
	</typeAliases>
	
	<environments default="development">
		<environment id="development">
			<transactionManager type="JDBC"/>
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver"/>
				<property name="url" value="jdbc:mysql://localhost:3306/testdb"/>
				<property name="username" value="csz"/>
				<property name="password" value="csz"/>
			</dataSource>
		</environment>
	</environments>
  
	<mappers>
		<mapper resource="com/ibatis/bean/SqlMapper.xml"/>
	</mappers>
	
</configuration>

 

2. User.java类

package com.ibatis.bean;

import java.io.Serializable;

public class User implements Serializable {

	private static final long serialVersionUID = 4054639727225043549L;
	
	int id;
	String username;
	String password;
	
	public User() {
		super();
	}

	public User(int id, String username, String password) {
		super();
		this.id = id;
		this.username = username;
		this.password = password;
	}
	
	public int getId() {
		return id;
	}
	public void setId(int 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;
	}
}

 

3. SqlMapper.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="com.ibatis.mapper.ObjectMapper">
	
	<insert id="insertUser" parameterType="User">
    	insert into user(username, password) values(#{username}, #{password})
	</insert>

    <delete id="deleteUser" parameterType="int" >
  		delete from user where id = #{id}
  	</delete>
  	
    <update id="updateUser" parameterType="User" >
  		update user set password = #{password} where id = #{id}
  	</update>
  
    <select id="selectUser" parameterType="int" resultType="User">
        select * from user where id = #{id}
    </select>

</mapper>

 

4. ObjectMapper.java类

package com.ibatis.mapper;

import com.ibatis.bean.User;

public interface ObjectMapper {

	public int insertUser(User user);
	
	public int deleteUser(int id);
	
	public void updateUser(User user);
	
	public User selectUser(int id);
	
}

 

5. FirstIbatisClass.java类

package com.ibatis.test;

import java.io.InputStream;

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.ibatis.bean.User;
import com.ibatis.mapper.ObjectMapper;

public class FirstIbatisClass {

	public static void main(String[] args) {
		InputStream inputStream = null;
		SqlSession session = null;
		try {
			inputStream = Resources.getResourceAsStream("mybatis.xml");
			
			SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
			session = sqlSessionFactory.openSession();
			ObjectMapper mapper = session.getMapper(ObjectMapper.class);
			
			User user = new User();
			
			//insert
////			user.setId(2);
//			user.setUsername("bbb");
//			user.setPassword("bbb");
//			int n = mapper.insertUser(user);
//			if(n == 1) {
//				System.out.println("insert success");
//			} else {
//				System.out.println("insert fail");
//			}
			
			//delete
//			mapper.deleteUser(7);
			
			//update
//			user.setId(1);
//			user.setPassword("ddd");
//			mapper.updateUser(user);
			
			//select
			user = mapper.selectUser(1);
			System.out.println("password: " + user.getPassword());
			
			session.commit();  //如果是增删改操作，commit之后操作才能生效
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if(session != null) {
				session.close();
			}
		}
	}
	
}

 

项目的目录结构如下：

 

所需jar包：

         mybatis-3.1.1.jar

         mysql-connector-java-5.1.6-bin.jar

 

完整实例下载：

          MyBatis3.1.1增删改查源码实例.rar