mybatis 第一天环境的搭建

 工程结构：

 

 

数据库表结构：

 

 

configuration.xml
 

<?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 alias="User" type="com.bugyun.mybatis.model.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://127.0.0.1:3306/test" />
            <property name="username" value="root"/>
            <property name="password" value="root"/>
            </dataSource>
        </environment>
    </environments>
    
    <mappers>
        <mapper resource="com/bugyun/mybatis/model/User.xml"/>
    </mappers>
</configuration>

 

 

 User.java

 

package com.bugyun.mybatis.model;

public class User {

    private int id;
    private String userName;
    private int userAge;
    private String userAddress;
    
	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 int getUserAge() {
		return userAge;
	}
	public void setUserAge(int userAge) {
		this.userAge = userAge;
	}
	public String getUserAddress() {
		return userAddress;
	}
	public void setUserAddress(String userAddress) {
		this.userAddress = userAddress;
	}
}

 

 

 UserInfo.xml

<?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="UserInfo">
    <select id="selectUserInfo" parameterType="int" resultType="User">
        select * from user where id = #{id}
    </select>
</mapper>

 

 

Test.java

 

package com.bugyun.test;

import java.io.Reader;

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.bugyun.mybatis.model.User;

public class Test {

	private static SqlSessionFactory sqlSessionFactory;
	private static Reader reader;

	static {
		try {
			reader = Resources.getResourceAsReader("configuration.xml");
			sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static SqlSessionFactory getSession() {
		return sqlSessionFactory;
	}

	public static void main(String[] args) {
		SqlSession session = sqlSessionFactory.openSession();
		try {
			User user = (User) session.selectOne("UserInfo.selectUserInfo", 1);
			System.out.println(user.getUserAddress());
			System.out.println(user.getUserName());
					
		} finally {
			session.close();
		}
	}

}

 

 源码见附件！

参考资料：http://mybatis.github.io/mybatis-3/zh/index.html