1.在pom文件中添加mybatis核心依赖，
- 配置 pom 文件 ，导包
代码如下：
<dependencies>
<!-- 配置 mybatis 核心依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.5</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.44</version>
</dependency>
<!-- 导入log4j 日志包 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.21</version>
</dependency>
</dependencies>
- 配置全局配置文件 SqlMapConfig.xml
代码如下：
<?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="dev">
<environment id="dev">
<transactionManager type="JDBC"></transactionManager>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql:///table"/>
<property name="username" value="root"/> <property name="password" value="root"/>
</dataSource> </environment> </environments>
<mappers>
<mapper resource="com/xingxue/mybatis/mapper/UserMapper.xml"/>
</mappers>
</configuration>
- 配置 mapper 映射文件
-
代码如下：
-
<?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="test">
-
<!-- insert 标签会被mybatis封装成一个 statement对象 -->
-
<insert id="add"> INSERT INTO TBL_USER (NAME,BIRTH,PASSWORD)VALUES(#{name},#{birth},#{password}) </insert>
-
</mapper>
测试： -
代码如下：
-
private static void insert() throws IOException { InputStream is = Resources.getResourceAsStream("SqlMapConfig.xml");
-
SqlSessionFactoryBuilder sb = new SqlSessionFactoryBuilder(); SqlSessionFactory factory = sb.build(is);
-
//得到了 SqlSession
-
SqlSession session = factory.openSession();
-
UserModel u = new UserModel();
-
u.setBirth(new Date()); u.setPassword("111");
-
u.setName("test2");
-
//插入操作
-
session.insert("test.add",u);
-
//提交事务
-
session.commit(); }
Mybtais 的核心对象API
Resources 对象 ：通过 类加载器获取文件数据
SqlSessionFactoryBuilder 对象: 创建 SqlSessionFactory 对象实例
SqlSessionFactory 对象: 创建一个 Connection 或者说 SqlSession 对象
SqlSession 对象：执行 sql 命令 以及管理事务 (掌握)，该对象线程不安全
以下代码告诉mybatis读取配置文件的规则：
<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.xml</include>
<include>**/*.properties</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>