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1.概述
MyBatis原本是apache的一个开源项目iBatis, 2010年这个项目由apache software foundation迁移到了google code，并且改名为MyBatis，MyBatis 是一个基于Java的持久层框架。iBatis提供的持久层框架包括SQL Maps和Data Access Objects（DAO）， MyBatis 是支持普通 SQL查询，存储过程和高级映射的优秀持久层框架。MyBatis 消除了几乎所有的JDBC代码和参数的手工设置以及结果集的检索。MyBatis使用简单的XML或注解用于配置和原始映射，将接口和 Java 的POJOs（Plain Old Java Objects，普通的 Java对象）映射成数据库中的记录。
2.简单DEMO
(1)User.java
public class User { private long id; private String name; private String pwd; public long getId() { return id; } public void setId(long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } }
(2)mybatis-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>
<settings>
<setting name="useGeneratedKeys" value="true" />
</settings>
<typeAliases>
<typeAlias type="test.User" alias="user" />
</typeAliases>
<!--数据库参数配置 -->
<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/test?useUnicode=true&characterEncoding=UTF-8"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="test/sys_user.xml" />
</mappers>
</configuration>
(3)sys_user.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="sysuer">
<!-- 主键自增长 并且还回配置 useGeneratedKeys="true" keyProperty="fid"-->
<!-- user为bean简写 配置在 mybatis-configuration.xml的typeAliases中 -->
<insert id="insert" parameterType="user" useGeneratedKeys="true" keyProperty="id">
insert into sys_user(name,pwd)values(#{name},#{pwd})
</insert>
</mapper>
(4)Test.java
package 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;
public class Test {
public static void main(String[] args) {
try {
String resource="mybatis-configuration.xml";
Reader reader=Resources.getResourceAsReader(resource);
SqlSessionFactoryBuilder builder=new SqlSessionFactoryBuilder();
SqlSessionFactory factory = builder.build(reader);
SqlSession session = factory.openSession();
User user=new User();
user.setName("zcs");
user.setPwd("111");
session.insert("sysuer.insert", user);
session.commit();
System.err.println(user.getId());
} catch (Exception e) {
e.printStackTrace();
}
}
}
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原文地址：http://www.cnblogs.com/zcs201093189/p/4808922.html
