使用存储过程在mysql中批量插入数据

一、在mysql数据库中创建一张表test

DROP TABLE IF EXISTS `test`;
CREATE TABLE `test` (
	`id` INT (11),
	`name` VARCHAR (225),
	`age` INT (11),
	`create_time` DATE
);

二、使用存储过程插入数据

DROP PROCEDURE IF EXISTS BatchInsert;
DELIMITER $$
CREATE PROCEDURE BatchInsert(IN i INT, IN len INT)
  BEGIN
      WHILE i <= len DO
          INSERT INTO `test`(`id`,`name`,`age`,`create_time`) VALUES (i, CONCAT('tom-', i),FLOOR(RAND()*100),NOW());
          SET i = i + 1;
      END WHILE;
  END;
  $$
DELIMITER ;
CALL BatchInsert(1, 100);

三、在MyBatis中使用存储过程

1.新建一个maven工程，引入相应的依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.yqd</groupId>
    <artifactId>hello-mybatis-store procedure</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>
</project>

2.创建mybatis-config.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>
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <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/db20200930_springboot_demo?useSSL=false&amp;useUnicode=true&amp;characterEncoding=utf8&amp;serverTimezone=GMT%2B8"/>
                <property name="username" value="root"/>
                <property name="password" value="123456"/>
            </dataSource>
        </environment>
    </environments>

    <mappers>
        <mapper resource="com/yqd/dao/TestMapper.xml"/>
    </mappers>
</configuration>

3.新建一个mybatis工具类

public class MybatisUtils {
    private static SqlSessionFactory sqlSessionFactory;

    static {
        try {
            String resource = "mybatis-config.xml";
            InputStream inputStream = Resources.getResourceAsStream(resource);
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static SqlSession getSession(boolean flag){
        return sqlSessionFactory.openSession(flag);
    }

    //获取SqlSession连接
    public static SqlSession getSession(){
        return getSession(true); //设置事务自动提交
    }
}

4.创建实体类Test

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Test {
    private int id;
    private String name;
    private int age;
    private Date createTime;
}

5.创建mapper和对应的xml

public interface TestMapper {
    int batchInsert(@Param("i") int i, @Param("len") int len);
}

<?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.yqd.dao.TestMapper">
    <insert id="batchInsert" statementType="CALLABLE">
        {call batchInsert(#{i,mode=IN,jdbcType=INTEGER}, #{len,mode=IN})}
    </insert>
</mapper>

6.在mysql数据库中新建存储过程,执行一遍下面的代码

DROP PROCEDURE IF EXISTS batchInsert;
DELIMITER $$
CREATE PROCEDURE batchInsert(IN i INT, IN len INT)
  BEGIN
      WHILE i <= len DO
          INSERT INTO `test`(`id`,`name`,`age`,`create_time`) VALUES (i, CONCAT('tom-', i),FLOOR(RAND()*100),NOW());
          SET i = i + 1;
      END WHILE;
  END;
  $$
DELIMITER ;

7.测试

public class MyTest {
    @Test
    public void testBatchInsert() {
        SqlSession session = MybatisUtils.getSession();
        TestMapper mapper = session.getMapper(TestMapper.class);
        mapper.batchInsert(1, 10);//调用mapper中的方法，执行存储过程
        session.close();
    }
}