Atitit mybatis使用简明教程目录 1.1. Mybatis.xml 配置文件 1 1.2. Datamp.xml mapper文件主要作用是分模块放sql语句 2 1.3. 查询

Atitit mybatis使用简明教程

1.2. Datamp.xml mapper文件主要作用是分模块放sql语句 2

1. Mybatis.xml 配置文件

<?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>

   <settings>
   
      <setting name="defaultStatementTimeout" value="30000" />
   </settings>

   <environments default="mysql">

      <environment />
         -->
   </mappers>
</configuration>

1. Datamp.xml mapper文件主要作用是分模块放sql语句

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN" "http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">


<mapper namespace="/" >

    <select >

         <![CDATA[
select * from yinhuanpaidanbiao
]]>

</mapper>

1. 查询使用

package org.chwin.firefighting.apiserver.data;

import com.alibaba.fastjson.JSON;
import ognl.OgnlException;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;

import java.io.IOException;
import java.util.List;
import java.util.Map;

public class dataExecuter {

    public static void main(String[] args) throws IOException, OgnlException {

        SqlSessionFactory sqlSessionFactory = MybatisUtil. getSqlSessionFactory();

        SqlSession session = sqlSessionFactory.openSession(true);
        // api ��Ϊ[ openSession(boolean autoCommit) ]��ò��ֵ��Ƹ� sqlSession �Ƿ��Զ��ύ��true��ʾ�Զ��ύ��false��ʾ��Զ��ύ[��޲εķ��һ�£��Զ��ύ]

        List<Map> rzt = session.selectList("warning_query",null);
        System.out.println(JSON.toJSONString(rzt, true));
    }
}

1. 使用mapper文件模式

MybatisMapperCls mapper = session.getMapper(MybatisMapperCls.class);

// List li =mapper.queryall();

List<Map> li = mapper.query("call sp1(2)");