- MyBatis利用For循环批量插入
- MyBatis的手动批量提交
- MyBatis以集合方式批量新增（推荐）
- MyBatis-Plus提供的SaveBatch方法
- MyBatis-Plus提供的InsertBatchSomeColumn方法（推荐）
文章目录
-
-
- 1.项目准备
-
- 1.1 pom文件
- 1.2 yml文件
- 1.3 User类
- 2.MyBatis利用For循环批量插入
- 3.MyBatis的手动批量提交
- 4.MyBatis以集合方式批量新增（推荐）
- 5.MyBatis-Plus提供的SaveBatch方法
- 6.MyBatis-Plus提供的InsertBatchSomeColumn方法（推荐）
1.项目准备
1.1 pom文件
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<scope>runtimescope>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>2.2.2version>
dependency>
<dependency>
<groupId>com.baomidougroupId>
<artifactId>mybatis-plus-boot-starterartifactId>
<version>3.5.2version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<optional>trueoptional>
dependency>
1.2 yml文件
server:
port: 8080
spring:
datasource:
username: mysql用户名
password: mysql密码
url: jdbc:mysql://localhost:3306/数据库名字?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC
driver-class-name: com.mysql.cj.jdbc.Driver
mybatis:
mapper-locations: classpath:mapping/*.xml
1.3 User类
@Data
public class User {
private int id;
private String username;
private String password;
}
2.MyBatis利用For循环批量插入
@Service
public class UserService {
@Resource
private UserMapper userMapper;
public void InsertUsers(){
long start = System.currentTimeMillis();
for(int i = 0 ;i < 10000; i++) {
User user = new User();
user.setUsername("name" + i);
user.setPassword("password" + i);
userMapper.insertUsers(user);
}
long end = System.currentTimeMillis();
System.out.println("一万条数据总耗时：" + (end-start) + "ms" );
}
}
@Mapper
public interface UserMapper {
Integer insertUsers(User user);
}
<?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.ithuang.demo.mapper.UserMapper">
<insert id="insertUsers">
INSERT INTO user (username, password)
VALUES(#{username}, #{password})
</insert>
</mapper>
一万条数据总耗时：26348ms
3.MyBatis的手动批量提交
@Service
public class UserService {
@Resource
private UserMapper userMapper;
@Resource
private SqlSessionTemplate sqlSessionTemplate;
public void InsertUsers(){
SqlSession sqlSession = sqlSessionTemplate.getSqlSessionFactory().openSession(ExecutorType.BATCH, false);
UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
long start = System.currentTimeMillis();
for(int i = 0 ;i < 10000; i++) {
User user = new User();
user.setUsername("name" + i);
user.setPassword("password" + i);
userMapper.insertUsers(user);
}
sqlSession.commit();
long end = System.currentTimeMillis();
System.out.println("一万条数据总耗时：" + (end-start) + "ms" );
}
}
一万条数据总耗时：24516ms
4.MyBatis以集合方式批量新增（推荐）
@Service
public class UserService {
@Resource
private UserMapper userMapper;
public void InsertUsers(){
long start = System.currentTimeMillis();
List<User> userList = new ArrayList<>();
User user;
for(int i = 0 ;i < 10000; i++) {
user = new User();
user.setUsername("name" + i);
user.setPassword("password" + i);
userList.add(user);
}
userMapper.insertUsers(userList);
long end = System.currentTimeMillis();
System.out.println("一万条数据总耗时：" + (end-start) + "ms" );
}
}
@Mapper
public interface UserMapper {
Integer insertUsers(List<User> userList);
}
DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.ithuang.demo.mapper.UserMapper">
<insert id="insertUsers">
INSERT INTO user (username, password)
VALUES
<foreach collection ="userList" item="user" separator =",">
(#{user.username}, #{user.password})
foreach>
insert>
mapper>
一万条数据总耗时：521ms
5.MyBatis-Plus提供的SaveBatch方法
@Service
public class UserService extends ServiceImpl<UserMapper, User> implements IService<User> {
public void InsertUsers(){
long start = System.currentTimeMillis();
List<User> userList = new ArrayList<>();
User user;
for(int i = 0 ;i < 10000; i++) {
user = new User();
user.setUsername("name" + i);
user.setPassword("password" + i);
userList.add(user);
}
saveBatch(userList);
long end = System.currentTimeMillis();
System.out.println("一万条数据总耗时：" + (end-start) + "ms" );
}
}
@Mapper
public interface UserMapper extends BaseMapper<User> {
}
一万条数据总耗时：24674ms
6.MyBatis-Plus提供的InsertBatchSomeColumn方法（推荐）
public class EasySqlInjector extends DefaultSqlInjector {
@Override
public List<AbstractMethod> getMethodList(Class<?> mapperClass, TableInfo tableInfo) {
List<AbstractMethod> methodList = super.getMethodList(mapperClass, tableInfo);
methodList.add(new InsertBatchSomeColumn(i -> i.getFieldFill() != FieldFill.UPDATE));
return methodList;
}
}
@Configuration
public class MybatisPlusConfig {
@Bean
public EasySqlInjector sqlInjector() {
return new EasySqlInjector();
}
}
public class UserService{
@Resource
private UserMapper userMapper;
public void InsertUsers(){
long start = System.currentTimeMillis();
List<User> userList = new ArrayList<>();
User user;
for(int i = 0 ;i < 10000; i++) {
user = new User();
user.setUsername("name" + i);
user.setPassword("password" + i);
userList.add(user);
}
userMapper.insertBatchSomeColumn(userList);
long end = System.currentTimeMillis();
System.out.println("一万条数据总耗时：" + (end-start) + "ms" );
}
}
public interface EasyBaseMapper<T> extends BaseMapper<T> {
Integer insertBatchSomeColumn(Collection<T> entityList);
}
@Mapper
public interface UserMapper<T> extends EasyBaseMapper<User> {
}
一万条数据总耗时：575ms
