mybatis 简单配置

一.com/book/map包下有两个配置文件：

1.MyBatisConfig.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>

    <!-- 定义别名 -->
	<typeAliases>
		<typeAlias alias="bookUser" type="com.book.pojo.bookUser" />
	</typeAliases>

	<!-- 配置环境 -->
    <environments default="development">
	    <environment id="development">
		    <transactionManager type="JDBC"/>
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver"/>
				<property name="url" value="jdbc:mysql://localhost:3306/wzz"/>
				<property name="username" value="root"/>
				<property name="password" value="777777"/>
			</dataSource>
	    </environment>
    </environments>

	<!-- 映射路径 -->
    <mappers>
	   <mapper resource="com/book/map/bookmap.xml"/>
            <!--  接口的方式 -->
	   <mapper class="com.book.map.InterfaceBookUserMap" />
	</mappers>

</configuration>

　　

　　2.bookmap.xml   用于写sql语句进行数据库具体操作

<?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="domain.blog.mappers.AutoorMapper">
   <!--  parameterType为参数类型,resultType为返回值类型 -->
    <select id="findById" parameterType="int" resultType="com.book.pojo.bookUser">
    select * from bookuser where id=#{id}
    </select>

     <insert id="insertUser" parameterType="bookUser" statementType="PREPARED"
     keyProperty="id" useGeneratedKeys="true">
     insert into bookuser (userName,password) values (#{userName},#{password})
     </insert>

	<update id="updateUser" parameterType="bookUser">
		update bookuser set
		userName=#{userName},
		password=#{password}
		where id=#{id}
	</update>

	</mapper>
	

　　也可以用interface接口的方式取代

　　

package com.book.map;

import org.apache.ibatis.annotations.Delete;

public interface InterfaceBookUserMap {
	@Delete("delete from bookuser where id=#{id}")
	public void deleteUser(Integer id);

}

　　

二.一个简单java类bookUser

package com.book.pojo;

public class bookUser {

	private int id;
	private String userName;
	private String password;
	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 String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}

}

　　

三.测试类

package com.book.test;

import java.io.IOException;
import java.io.Reader;

import org.apache.ibatis.annotations.Update;
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.book.map.InterfaceBookUserMap;
import com.book.pojo.bookUser;

public class testBook {

	public static void main(String[] args) {

		String resource = "com/book/map/MyBatisConfig.xml";
		Reader reader = null;
		SqlSession session;
		try {
			reader = Resources.getResourceAsReader(resource);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		SqlSessionFactory sqlMapper = new SqlSessionFactoryBuilder().build(reader);
		session = sqlMapper.openSession();

		//selectone(session);
		//insert(session);
		//update(session);
		delete(session);

		session.close();
	}
	public static void selectone(SqlSession session){
		bookUser temp = session.selectOne("findById",1);
		System.out.print(temp.getUserName());
	}

	public static void insert(SqlSession session){
		bookUser bu = new bookUser();
		bu.setUserName("wzz");
		bu.setPassword("123456");
		session.insert("insertUser", bu);
		session.commit();
	}

	public static void update(SqlSession session){
		bookUser bu = new bookUser();
		bu.setUserName("wzz2");
		bu.setPassword("111");
		bu.setId(1);
		session.update("updateUser", bu);
		session.commit();
	}

	public static void delete(SqlSession session){
		InterfaceBookUserMap idbu = session.getMapper(InterfaceBookUserMap.class);
		idbu.deleteUser(1);
		session.commit();
	}
}