使用SpringBoot注解方式处理事务回滚

我们在SpringBoot和MyBatis整合的时候，需要在SpringBoot中通过注解方式配置事务回滚
1 Pojo类

package com.zxf.domain;

import java.util.Date;

public class User {
    private Integer id;
    private String  name;
    private String pwd;
    private String head_img;
    private String  phone;
    private Date create_time;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPwd() {
        return pwd;
    }

    public void setPwd(String pwd) {
        this.pwd = pwd;
    }

    public String getHead_img() {
        return head_img;
    }

    public void setHead_img(String head_img) {
        this.head_img = head_img;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public Date getCreate_time() {
        return create_time;
    }

    public void setCreate_time(Date create_time) {
        this.create_time = create_time;
    }
}

2 Mapper接口
我们这里使用注解的方式编写SQL语句

package com.zxf.mapper;

import com.zxf.domain.User;
import org.apache.ibatis.annotations.Insert;
import org.springframework.stereotype.Repository;

@Repository
public interface UserMapper {
    @Insert("insert into user (name,pwd,head_img,phone,create_time) values(#{name},#{pwd},#{head_img},#{phone},#{create_time})")
        public int save(User user);
}

3 Service接口和实现类

package com.zxf.service;

import com.zxf.domain.User;


public interface UserService {
    public int save(User user);
}

package com.zxf.service.impl;
import com.zxf.domain.User;
import com.zxf.mapper.UserMapper;
import com.zxf.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Transactional  //实现事务的时候要在业务类中加入该注解
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;

    @Override
    public int save(User user) {
        int f= userMapper.save(user);
      //  int x=5/0;
        return f;
    }
}

4 Controller层

package com.zxf.controller;

import com.zxf.domain.User;
import com.zxf.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.Date;
@RestController
@RequestMapping("api/v1/user")
public class UserController {
    @Autowired
    private UserService userService;
     @RequestMapping("save")
    public Object save(){
        User user=new User();
           user.setName("zhang3");
           user.setPwd("abc123");
           user.setCreate_time(new Date());
           user.setPhone("1789238734");
           user.setHead_img("aabbddd.jpg");
        userService.save(user);
        return user;
    }
}

5 application.properits 配置文件

spring.datasource.driver-class-name =com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/online
spring.datasource.username=root
spring.datasource.password=******
mybatis.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl

6 pom文件

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.zxf</groupId>
    <artifactId>xf_spring2</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>xf_spring2</name>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.2</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.13</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

6 SpringBoot启动类

package com.zxf;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.transaction.annotation.EnableTransactionManagement;
@SpringBootApplication
@MapperScan("com.zxf.mapper")//扫描mapper接口
@EnableTransactionManagement//事务处理的时候启动类必须要加的注解
public class XfSpring2Application {
    public static void main(String[] args) {
        SpringApplication.run(XfSpring2Application.class, args);
    }
}

7 也是最重要，也是很多人忽视的地方，就是MySQL要支持事务处理才可以

这里一定要记住；否则你的SpringBoot的事务没有任何效果
大家在做这部分的内容，如果有问题可以在评论区讨论。如果喜欢我的文章可以关注我！！！