1、用户实体类
package com.javasm.entity;
/**
*
*TODO 用户表实体类
* @author CaoLei 2018年6月26日上午10:50:12
* ManagerUser
*/
public class User {
// id
private String id;
// 用户名
private String userName;
// 密码
private String pssword;
// 电话
private String phone;
// 地址
private String address;
// 生日
private String birth;
// 性别
private String sex;
public User() {
super();
}
public User(String id, String userName, String pssword, String phone,
String address, String birth, String sex) {
super();
this.id = id;
this.userName = userName;
this.pssword = pssword;
this.phone = phone;
this.address = address;
this.birth = birth;
this.sex = sex;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPssword() {
return pssword;
}
public void setPssword(String pssword) {
this.pssword = pssword;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getBirth() {
return birth;
}
public void setBirth(String birth) {
this.birth = birth;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
}
2、Dao层
package com.javasm.dao;
import java.util.List;
import com.javasm.entity.User;
/**
*
*TODO
* @author CaoLei 2018年6月26日上午10:53:37
* UserDao
*/
public interface UserDao {
List<User> listUsers();
User getUser(int id);
int insertUser(User user);
int deleteUser(String id);
}
3、核心配置
<?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="development">
<environment id="development">
<transactionManager type="JDBC" />
<!-- 配置数据库连接信息 -->
<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&useSSL=false" />
<property name="username" value="root" />
<property name="password" value="root" />
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="com/javasm/mapper/UserMapper.xml" />
</mappers>
</configuration>
4、 mapper.xml配置
<?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="com.javasm.dao.UserDao">
<select id="listUsers"
resultType="com.javasm.entity.User">
SELECT * FROM user
</select>
<select id="getUser" parameterType="String"
resultType="com.javasm.entity.User">
select * from user where id=#{id}
</select>
<insert id="insertUser">
insert into user
(id,username,sex,phone,password,address,birth)
values
(#{id},#{userName},#{sex},#{phone},#{password},#{address},#{birth})
</insert>
<delete id="deleteUser" parameterType="String">
DELETE FROM user WHERE id=#{id}
</delete>
</mapper>
5、测试类
package test;
import java.io.IOException;
import java.io.Reader;
import java.util.List;
import java.util.Random;
import java.util.UUID;
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.javasm.dao.UserDao;
import com.javasm.entity.User;
import com.javasm.utils.RandomString;
import com.javasm.utils.UUIDUtil;
public class MainTest {
// mybatis的配置文件
private static final String resource = "mybatis-config.xml";
private static UserDao mapper;
private static SqlSession session;
static {
// 使用MyBatis提供的Resources类加载mybatis的配置文件（它也加载关联的映射文件）
try {
Reader reader = Resources.getResourceAsReader(resource);
SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder()
.build(reader);
// 创建能执行映射文件中sql的sqlSession
session = sessionFactory.openSession();
// 获取dao实现的映射
mapper = session.getMapper(UserDao.class);
// 执行查询返回一个唯一user对象的sql
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String[] args) throws IOException {
// insertMoreData(100);
User user = mapper.getUser("15AA3FD8A6764F7395081D66001CD37A");
System.out.println(user.getUserName());
List<User> userList = mapper.listUsers();
for (User user1 : userList) {
System.out.println(user1.getId() + "," +user1.getUserName() + "," +user1.getPhone());
}
int count = mapper.deleteUser("15AA3FD8A6764F7395081D66001CD37A");
session.commit();
System.out.println("删除了" + count + "条数据！");
User user2 = mapper.getUser("15AA3FD8A6764F7395081D66001CD37A");
System.out.println("user2.getUserName()" + user2.getUserName());
}
private static void insertMoreData(int count) {
String[] location = { "陕西西安", "河南郑州", "甘肃兰州", "江苏南京", "湖北武汉", "江西南昌",
"湖南长沙", "四川成都", "上海", "北京", "山东烟台", "山西太原" };
String[] birth = { "1958-09-12", "1988-05-22", "1998-01-12", "2008-09-18", "2008-01-01", "1918-03-22",
"1978-09-29", "1968-10-12", "2018-10-31", "1989-11-12", "2003-11-23", "2001-01-23" };
String[] sex = {"男","女","未知"};
for (int i = 0; i < count; i++) {
int randomlocation = new Random().nextInt(location.length);
int randombirth = new Random().nextInt(birth.length);
int randomsex = new Random().nextInt(sex.length);
int phone = 10912 + i;
User user2 = new User(UUIDUtil.UUIDCreater(),
RandomString.chineseString(), UUID.randomUUID().toString(), "152596" + phone,
location[randomlocation], birth[randombirth], sex[randomsex]) ;
mapper.insertUser(user2);
session.commit();
}
}
}