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log4j.rootLogger=DEBUG, stdoutlog4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n |
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<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN"<configuration> <!-- 和spring整合后environments配置将废除 --> <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/mybatis?characterEncoding=utf8" /> <property name="username" value="root" /> <property name="password" value="root" /> </dataSource> </environment> </environments></configuration> |
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package com.hqu.model;import java.sql.Date;public class User { private int id; private String username; private String sex; private Date birthday; private String address; private String detail; private float score; // getter and setter .. } |
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<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"<mapper namespace="test"> <!-- 查询用户信息 select :将select标签内容称为statement id：是在user.xml的唯一标识，statement的id parmeterType:指向sql（向statement中）中传入参数的类型 #{}：表示一个点位符，{}中的id表示传入变量名，当传入单个值{}中的变量可以随意 resultType：将sql查询结果集映射成java对象的类型 --> <select id="findUserByName" parameterType="string" resultType="com.hqu.model.User"> select * from User where username = #{id} </select> <insert id="insertUser" parameterType="com.hqu.model.User"> insert into user(username,birthday,sex,address,detail,score) values (#{username},#{birthday},#{sex},#{address},#{detail},#{score}) </insert></mapper> |
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<configuration> ... <!-- 加载映射文件 --> <mappers> <mapper resource="sqlmap/User.xml" /> </mappers></configuration> |
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public class MybatisTest { SqlSession sqlSession = null; @Before public void before() throws IOException { String resource = "SqlMapConfig.xml"; // mybatis的配置文件 InputStream is = Resources.getResourceAsStream(resource); // 创建会话工厂 SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(is); sqlSession = sqlSessionFactory.openSession(); // 从会话工厂中的到会话 } @After public void after() { sqlSession.close(); // 释放资源 } @Test public void testSelect() { // 通过sqlSession操作数据库 // 第一个参数：user.xml定义的statement的id // 第二个参数：输入参数 User user = sqlSession.selectOne("test.findUserByName", "jerome"); System.out.println(user); } @Test public void testInsert() { User user = new User(); user.setUsername("jelly"); user.setSex("女"); user.setAddress("深圳"); user.setScore(12f); sqlSession.insert("test.insertUser", user); sqlSession.commit(); // 提交事务 }} |
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原文地址：http://blog.csdn.net/jerome_s/article/details/46340043
