Detailed explanation of the steps to implement batch Insert operations using MyBatis

Title: How to use MyBatis to implement batch Insert operations

MyBatis is an excellent persistence layer framework that is widely used in Java development. In actual development, we often encounter situations where we need to insert data in batches. This article will introduce in detail how to use MyBatis to implement batch Insert operations, with specific code examples.

Step 1: Configure MyBatis

Introduce MyBatis into the project and configure MyBatis-related information, including database connection information, Mapper interface scanning, etc. The sample configuration is as follows:

<!-- MyBatis配置文件 -->
<configuration>
    <!-- 数据库连接信息 -->
    <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/test" />
                <property name="username" value="root" />
                <property name="password" value="123456" />
            </dataSource>
        </environment>
    </environments>
    <!-- Mapper接口扫描 -->
    <mappers>
        <mapper resource="com/example/mapper/UserMapper.xml" />
    </mappers>
</configuration>

Step 2: Write the Mapper interface

Define the method of batch inserting data in the Mapper interface. The method parameters use List to receive the data to be inserted. The sample code is as follows:

public interface UserMapper {
    void batchInsert(List<User> userList);
}

Step 3: Write the Mapper.xml file

Write specific SQL statements in the Mapper.xml file and use the foreach tag to insert data in a loop. The sample code is as follows:

<!-- UserMapper.xml -->
<mapper namespace="com.example.mapper.UserMapper">
    <insert id="batchInsert" parameterType="java.util.List">
        INSERT INTO user (id, name, age) VALUES
        <foreach collection="list" item="user" separator="," >
            (#{user.id}, #{user.name}, #{user.age})
        </foreach>
    </insert>
</mapper>

Step 4: Call the Mapper interface to implement batch Insert operations

In the Service layer or other places where batch insertion operations are required, call the method of the Mapper interface to implement batch Insert operations. The sample code is as follows:

@Service
public class UserService {
    
    @Autowired
    private UserMapper userMapper;
    
    public void batchInsertUsers(List<User> userList) {
        userMapper.batchInsert(userList);
    }
}

Summary

Through the above steps, we can easily use MyBatis to implement batch Insert operations and improve the efficiency of data insertion. I hope this article will be helpful to developers who use MyBatis to implement batch Insert operations.

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