002 springBoot事物

　　在使用注解的时候，需要注意的是，只能写在@Service的类中才能生效。

1.事物

　　只是需要一个注解即可

2.事物程序

package com.caojun.springboot;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
public class TransactionService {

    @Autowired
    private StudentResitory studentResitory;

    @Transactional
    public void insertTwo(){
        Student student1=new Student();
        student1.setName("AA");
        student1.setAge(33);
        studentResitory.save(student1);

        Student student2=new Student();
        student2.setName("BB");
        student2.setAge(44);
        studentResitory.save(student2);
    }
}

3.验证程序

@RestController
public class StudentController {

    @Autowired
    private StudentResitory studentResitory;

    @Autowired
    private TransactionService transactionService;

    /**
     * 数据库事物
     */
    @GetMapping(value = "/hello/insertTwo")
    public void insertStu(){
        transactionService.insertTwo();
    }

4.效果