一、mybaitis的增删改查简单操作

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1、导入jar包

mysql-connector-java-5.1.7-bin.jar
mybatis-3.2.7.jar

2、db.propertiese

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test?characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

3、sqlMapperConfig.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>

	<properties resource="config/db.properties">
	<!-- <property name="" value=""/> -->
	</properties>
	
	 <environments default="development">
		 <environment id="development">
		 <transactionManager type="JDBC"/>
		 <dataSource type="POOLED">
		 <property name="driver" value="${jdbc.driver}"/>
		 <property name="url" value="${jdbc.url}"/>
		 <property name="username" value="${jdbc.username}"/>
		 <property name="password" value="${jdbc.password}"/>
		 </dataSource>
		 </environment>
	 </environments>
 <mappers>
	 <mapper resource="zml/conf/UserMapper.xml"/>
 </mappers>
</configuration>

4、实体类

package zml.pojo;

import java.util.Date;

public class User {
	private int id;
	private String username;
	private Date birthday;
	private int sex;
	private String address;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public Date getBirthday() {
		return birthday;
	}
	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}
	public int getSex() {
		return sex;
	}
	public void setSex(int sex) {
		this.sex = sex;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	@Override
	public String toString() {
		return "User [id=" + id + ", username=" + username + ", birthday=" + birthday + ", sex=" + sex + ", address="
				+ address + "]";
	}
	
}

5、操作：

package zml.Test;

import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;

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 org.junit.Before;
import org.junit.Test;

import zml.pojo.User;

public class MybatisFrist {
	private SqlSessionFactory sqlF;
	@Before
	public void createSqlsessionFactory() throws IOException{
		String resource = "config/SqlMapperConfig.xml";
		InputStream inputStream = Resources.getResourceAsStream(resource);
		sqlF = new SqlSessionFactoryBuilder().build(inputStream);
		
				
	}
	@Test
	public void TestGeyById(){
		SqlSession sqlSession = null;
		User user = null;
		try{
			sqlSession= sqlF.openSession();
			user = sqlSession.selectOne("user.getById",1);
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			sqlSession.close();
		}
		System.out.println(user);
		
	}
	
	@Test
	public void TestLike(){
		SqlSession sqlSession = null;
		List<User> userList = null;
		try{
			sqlSession= sqlF.openSession();
			//userList = sqlSession.selectList("user.getByLikeUsername", "%小明");
			userList = sqlSession.selectList("user.getByLikeUsername2", "小明");
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			sqlSession.close();
		}
		System.out.println(userList);
		
	}
	
	@Test
	public void TestUpdate(){
		SqlSession sqlSession = null;
		try{
			sqlSession= sqlF.openSession();
			User user = new User();
			user.setId(10);
			user.setBirthday(new Date());
			user.setUsername("zzml");
			sqlSession.update("user.updateUser", user);
			sqlSession.commit();
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			sqlSession.close();
		}
		
	}
	@Test
	public void TestDel(){
		SqlSession sqlSession = null;
		try{
			sqlSession= sqlF.openSession();
			sqlSession.delete("user.deleteUser", 26);
			sqlSession.commit();
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			sqlSession.close();
		}
		
	}
	
	@Test
	public void TestAdd(){
		SqlSession sqlSession = null;
		User user = new User();
		try{
			sqlSession= sqlF.openSession();
			//DOTO 表结构中 id为自增主键
			user.setBirthday(new Date());
			user.setUsername("zengmeiling2");
			//sqlSession.insert("user.add",user);
			sqlSession.insert("user.add2",user);
			sqlSession.commit();
		}catch(Exception e){
			e.printStackTrace();
		}finally{
			sqlSession.close();
		}
		System.out.println("====ID:==="+user.getId());
	}
}