Mybatis > 学习 1

From:  http://qiuqiu0034.iteye.com/blog/1157768#bc2302703

 

mybatis-3.0.3.jar                 http://code.google.com/p/mybatis/

mysql-connector-java-5.1.9-bin.jar(JDBC包)

 

 

config.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>  
    <environments default="myexample">  
        <environment id="myexample">  
            <transactionManager type="JDBC" />  
            <dataSource type="POOLED">  
                <property name="driver" value="com.mysql.jdbc.Driver" />  
                <property name="url" value="jdbc:mysql://localhost:3306/test_1" />  
                <property name="username" value="root" />  
                <property name="password" value="" />  
            </dataSource>  
        </environment>  
    </environments>  
    <!-- 要执行的sql语句 -->
    <mappers>  
        <mapper resource="com/mft/cfg/mapper_person.xml"/>  
    </mappers>  
</configuration>  

 

mapper_person.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="com.mft.cfg">  
    <select id="selectUserById" parameterType="int" resultType="com.mft.conn.Person">  
        select * from person where id=#{id}   
    </select>  
</mapper>  

 

Person.java

package com.mft.conn;

public class Person {
	private int id;
	private String name;
	private int age;
	private String sex;
	private String password;
	
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	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 getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getSex() {
		return sex;
	}
	public void setSex(String sex) {
		this.sex = sex;
	}
	

}

 

homeIndex.java

package home.mft;

import java.io.IOException;


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.mft.conn.Person;

public class homeIndex {
	
	public static void main(String[] args) {
		SqlSessionFactory factory = null;
		try {
			factory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsReader("com/mft/cfg/config.xml"));
		} catch (IOException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		
		SqlSession sqlSession = factory.openSession();
		Person p = (Person)sqlSession.selectOne("selectUserById",2);
		System.out.println(p.getName());
				
		
		
		
	}
}