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首先添加maven支持，pom.xml添加如下内容
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.1.1</version>
</dependency>
<dependency>
<groupId>com.oracle</groupId>
<artifactId>ojdbc14</artifactId>
<version>10.2.0.1.0</version>
</dependency>
然后添加3个*.java文件
User.java
package com.southgis.scout.demo;
/**
* 用户类
*
* @author lmc
*
*/
public class User {
private String name;
private Integer age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
public User() {
}
}
UserMapper.java
package com.southgis.scout.demo;
import com.southgis.scout.demo.User;
public interface UserMapper {
public User findById(String Id);
}
main.java
package com.southgis.scout.demo;
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.southgis.scout.demo.UserMapper;
import com.southgis.scout.demo.User;
public class main {
/**
* 获得MyBatis SqlSessionFactory
* SqlSessionFactory负责创建SqlSession，一旦创建成功，就可以用SqlSession实例来执行映射语句，commit，rollback，close等方法。
* @return
*/
private static SqlSessionFactory getSessionFactory() {
SqlSessionFactory sessionFactory = null;
String resource = "configuration.xml";
try {
sessionFactory = new SqlSessionFactoryBuilder().build(Resources
.getResourceAsReader(resource));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return sessionFactory;
}
public static void main(String[] args) {
SqlSession sqlSession = getSessionFactory().openSession();
UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
User user = userMapper.findById("20");
System.out.println(user.getName());
}
public main() {
super();
}
}
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>
<!--给实体类起一个别名 user -->
<typeAlias type="com.southgis.scout.demo.User" alias="User" />
</typeAliases>
<!--数据源配置 这块用 Oracle数据库 -->
<environments default="development">
<environment id="development">
<transactionManager type="jdbc" />
<dataSource type="POOLED">
<property name="driver" value="oracle.jdbc.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@192.168.56.102:1521:orcl" />
<property name="username" value="scott" />
<property name="password" value="tiger" />
</dataSource>
</environment>
</environments>
<mappers>
<!--userMapper.xml装载进来 同等于把“dao”的实现装载进来 -->
<mapper resource="userMapper.xml" />
</mappers>
</configuration>
userMapper.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">
<!--这块等于dao接口的实现 namespace必须和接口的类路径一样-->
<mapper namespace="com.southgis.scout.demo.UserMapper">
<!-- findById必须和接口中的方法名一样 返回一个User 就是刚才的别名 如果不弄别名要连类路径一起写 麻烦-->
<select id="findById" parameterType="HashMap" resultType="User">
select
dname as name from dept where deptno=#{id}
</select>
</mapper>
xml文件在资源文件夹下src\main\resources
要深入使用mytabis请看http://blog.csdn.net/liumengcheng/article/details/34422475 | 
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