一、先建一个数据库test，再建一张user表，表里有两个字段：id 是自增长，name。

二、新建一个java项目，导入两个jar包：mysql-connector-java-5.1.17-bin.jar 和 mybatis-3.0.4.jar。

三、在src下建一个包：com.cb

四、在com.cb包下面有四个文件，可以直接复制粘贴进去：

1、 User.java

package com.cb;
public class User {
private int id;
private String name;
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 User(){

}
}

2、configuration.xml

< xml version="1.0" encoding="UTF-8" >
"http://mybatis.org/dtd/mybatis-3-config.dtd">

3、User.xml

< xml version="1.0" encoding="UTF-8" >
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">



insert into user(name)
values(#{name})



delete from user where id=#{id}



update user set name=#{name} where id=#{id}



select * from user where id = #{id}



select * from user

4、 Test.java

package com.cb;

import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
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 {

@SuppressWarnings("unchecked")
public static void main(String[] args) throws IOException{
String resource = "com/cb/configuration.xml";
Reader reader = Resources.getResourceAsReader(resource);
SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(reader);
SqlSession session = sessionFactory.openSession();
try {
//增加一条新的记录
User user=new User();
user.setName("wangwu");
session.insert("com.cb.User.addOneUser",user);
session.commit();

//删除一条记录
/*session.delete("com.cb.User.deleteOneUser",11);
session.commit();*/

//更新一条数据
/*User user=new User();
user.setName("lisi");
user.setId(2);
session.update("com.cb.User.updateOneUser",user);
session.commit();*/

//按条件查询一条数据
/*User user = (User) session.selectOne("com.cb.User.selectOneUser",8);
System.out.println("id\tname");
System.out.println(user.getId()+"\t"+user.getName());*/

//查询表的全部数据
ArrayList list = (ArrayList) session.selectList("com.cb.User.selectAllUser");
for(int i=0;i System.out.println(list.get(i).getId()+"\t"+list.get(i).getName());
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
session.close();
}
}
}