mybatis批量增加与删除——（二）

package cn.xm.mapper;

import java.util.List;

import cn.xm.pojo.Questions;


/**
 * 自定义的批量删除与批量增加试题
 * @author liqiang
 *
 */
public interface QuestionsCustomMapper {
    /**
     * 批量导入试题
     * @param list 需要倒入的试题集合
     * @return
     * @throws Exception
     */
    public int saveQuestionBatch()throws Exception; 

}

<?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">

<!-- namespace命名空间，作用就是对sql进行分类化管理，理解sql隔离 注意：使用mapper代理方法开发，namespace有特殊重要的作用 -->
<mapper namespace="cn.xm.mapper.QuestionsCustomMapper">

    <insert id="saveQuestionBatch">
        INSERT INTO `exam`.`questions`
        VALUES (‘7‘,
        ‘1‘,
        ‘测试题目7‘,
        NULL,
        NULL,
        NULL,
        NULL,
        NULL,
        NULL,
        NULL,
        NULL,
        "安全知识")
    </insert>

</mapper>

package cn.xm.test.mybatis;

import java.io.InputStream;
import java.net.URL;
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.apache.tomcat.jdbc.pool.interceptor.SlowQueryReportJmxMBean;
import org.junit.Before;
import org.junit.Test;

import cn.xm.mapper.EmployeeInMapper;
import cn.xm.mapper.QuestionsCustomMapper;
import cn.xm.pojo.EmployeeIn;
import cn.xm.pojo.EmployeeInExample;

public class MybatisTest2 {

    private SqlSessionFactory sqlSessionFactory;

    @Before
    public void setUp() throws Exception {
        // 将全局配置文件作为一个流
        String resource = "sqlMapConfig.xml";
        String realPath = this.getClass().getClassLoader().getResource("sqlMapConfig.xml").getPath();
        InputStream inputStream = Resources.getResourceAsStream(resource);
        // 建立一个SqlSession工厂
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
    }

    // 测试增加
    @Test
    public void testAdd() throws Exception {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        QuestionsCustomMapper qsm = sqlSession.getMapper(QuestionsCustomMapper.class);
        int total = qsm.saveQuestionBatch();
        System.out.println(total);
        sqlSession.commit();
        sqlSession.close();
    }

}

/**
     * 批量导入试题
     * @param list 需要倒入的试题集合
     * @return 影响的行数
     * @throws Exception
     */
    public int saveQuestionBatch(List<Questions> list)throws Exception;

<?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">

<!-- namespace命名空间，作用就是对sql进行分类化管理，理解sql隔离 注意：使用mapper代理方法开发，namespace有特殊重要的作用 -->
<mapper namespace="cn.xm.mapper.QuestionsCustomMapper">

    <!-- INSERT INTO `exam`.`questions` VALUES (‘7‘, ‘1‘, ‘测试题目7‘, NULL, NULL, 
        NULL, NULL, NULL, NULL, NULL, NULL, "安全知识") -->
    <insert id="saveQuestionBatch" parameterType="java.util.List">
        INSERT INTO `exam`.`questions`
        VALUES
        <foreach collection="list" item="question" separator=",">
            (#{question.questionid},#{question.questionbankid},#{question.question},#{question.questionwithtag},#{question.answer},#{question.analysis},#{question.type},#{question.level},#{question.employeeid},#{question.uploadtime},#{question.status},#{question.knowledgetype})
        </foreach>
    </insert>


</mapper>

package cn.xm.test.mybatis;

import java.io.InputStream;
import java.util.ArrayList;
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 cn.xm.bean.basebean.Questions;
import cn.xm.mapper.QuestionsCustomMapper;


public class MybatisTest2 {

    private SqlSessionFactory sqlSessionFactory;

    @Before
    public void setUp() throws Exception {
        // 将全局配置文件作为一个流
        String resource = "sqlMapConfig.xml";
        String realPath = this.getClass().getClassLoader().getResource("sqlMapConfig.xml").getPath();
        InputStream inputStream = Resources.getResourceAsStream(resource);
        // 建立一个SqlSession工厂
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
    }
// 测试批量增加
    @Test
    public void testBatchAdd() throws Exception {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        QuestionsCustomMapper qsm = sqlSession.getMapper(QuestionsCustomMapper.class);
        List<Questions> list = new ArrayList<>();
        list.add(new Questions("8", "1", "测试题目8", "", "", "", "", "", "",null, "", ""));
        list.add(new Questions("9", "1", "测试题目8", "", "", "", "", "", "",null, "", ""));
        list.add(new Questions("10", "1", "测试题目8", "", "", "", "", "", "",null, "", ""));
        list.add(new Questions("11", "1", "测试题目8", "", "", "", "", "", "",null, "", ""));
        int total = qsm.saveQuestionBatch(list);
        System.out.println(total);
        sqlSession.commit();
        sqlSession.close();
    }

}

/**
     * 批量删除
     * @param ids id集合
     * @return  删除条数
     * @throws Exception
     */
    public int deleteQuestionBatch(List<String> ids)throws Exception; 

<!-- 批量删除 -->
    <!-- DELETE FROM `exam`.`questions` WHERE `questionId` in (‘10‘,‘11‘,‘8‘,‘9‘) -->
    <delete id="deleteQuestionBatch" parameterType="java.util.List">
        DELETE FROM `exam`.`questions` WHERE `questionId` in 
        <foreach collection="list" item="id" separator="," open="(" close=")">
            #{id}
        </foreach>
    </delete>

package cn.xm.test.mybatis;

import java.io.InputStream;
import java.util.ArrayList;
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 cn.xm.bean.basebean.Questions;
import cn.xm.mapper.QuestionsCustomMapper;

public class MybatisTest2 {

    private SqlSessionFactory sqlSessionFactory;

    @Before
    public void setUp() throws Exception {
        // 将全局配置文件作为一个流
        String resource = "sqlMapConfig.xml";
        String realPath = this.getClass().getClassLoader().getResource("sqlMapConfig.xml").getPath();
        InputStream inputStream = Resources.getResourceAsStream(resource);
        // 建立一个SqlSession工厂
        sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
    }


    // 测试批量删除
    @Test
    public void testBatchDelete() throws Exception {
        SqlSession sqlSession = sqlSessionFactory.openSession();
        QuestionsCustomMapper qsm = sqlSession.getMapper(QuestionsCustomMapper.class);
        List<String> ids = new ArrayList<>();
        ids.add("8");
        ids.add("9");
        ids.add("10");
        ids.add("11");
        int total = qsm.deleteQuestionBatch(ids);
        System.out.println(total);
        sqlSession.commit();
        sqlSession.close();
    }

}