mybatis-1

• 同时加载驱动包 mysql+mybatis

• 创建bean对应的mapper接口bookMapper

    package com.imu.mzw.mapper;
  
    import java.util.List;
  
    import com.imu.mzw.bean.Book;
  
    public interface BookMapper {
    	public void add(Book book);
    	public List<Book> pagination(Integer pageIndex,Integer pageSize);
    }
  

• 编辑该接口对用的mapper.xml文件

    <?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.imu.mzw.mapper.BookMapper">  
     <select id="pagination"  parameterType="int" resultType="Book">
        select b_id bid,b_isbn bisbn,b_name bname,
        b_author bauthor,b_publisher bpublisher,b_price bprice,
        b_type btype,b_pic bpic,b_stock bstock,
        b_content bcontent from t_book limit #{0},#{1}
     </select>
     <insert id="add" parameterType="Book">
       insert into t_book(b_isbn,b_name,b_author,b_publisher,b_price,b_type,
    		b_pic,b_stock) values(#{bisbn},#{bname},#{bauthor},#{bpublisher},
    		#{bprice},#{btype},#{bpic},#{bstock})
     </insert>
    </mapper>
  

• 配置mybatis-config.xml文件

    <?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> 
        <!-- 包名扫描 -->
        <package name="com.imu.mzw.bean"/>
     </typeAliases>
     <environments default="development"> 
     <environment id="development">
     <transactionManager type="JDBC"/>
     <dataSource type="POOLED">
     <property name="driver" value="com.mysql.cj.jdbc.Driver"/>
     <property name="url" value="jdbc:mysql://localhost:3306/db_imu?serverTimezone=GMT"/>
     <property name="username" value="root"/>
     <property name="password" value="123456"/>
     </dataSource>
     </environment> 
     </environments> 
     	<mappers>
     		<mapper resource="com/imu/mzw/mapper/BookMapper.xml"/>
     	</mappers>
    </configuration>
  

• BaseDAO类

    package com.imu.mzw.dao;
    
    import java.io.InputStream;
    
    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 BaseDAO {
    	public SqlSession getSession() {
    		SqlSession sqlSession=null;
    		try {
    			String resource="com/imu/mzw/config/mybatis-config.xml";
    			InputStream inputStream=Resources.getResourceAsStream(resource);
    			SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
    			sqlSession = sqlSessionFactory.openSession();
    			System.out.println("conn mysql success");
    		} catch (Exception e) {
    			System.err.println(e.getMessage());
    		}
    		return sqlSession;
    	}
    	public static void main(String[] args) {
    		//测试连接
    		new BaseDAO().getSession();
    	}
    }
  

• 运行测试