云笔记项目-Spring事务学习-传播NOT_SUPPORTED

接下来测试事务传播属性设置为NOT_SUPPORTED

Service层

Service层主要设置如下，其中还插入了REQUIRED作为比较。

package Service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import DAO.EmpDAO;
import Entity.EMP;

@Service("service1")
public class EMPService1Impl implements EMPService1{
    
    @Resource(name="empDAO")
    EmpDAO dao;
    
    @Transactional(propagation=Propagation.NOT_SUPPORTED)
    public void addEmp1(EMP emp) {
        dao.addEMP1(emp);        
    }

}

package Service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import DAO.EmpDAO;
import Entity.EMP;

@Service("service2")
public class EMPService2Impl implements EMPService2{
    
    @Resource(name="empDAO")
    EmpDAO dao;
   
    @Transactional(propagation=Propagation.REQUIRED)
    public void addEmp2(EMP emp) {
        dao.addEMP2(emp);
    }
    
    @Transactional(propagation=Propagation.NOT_SUPPORTED)
    public void addEmp2WithException(EMP emp) {
        dao.addEMP2(emp);
        throw new RuntimeException();
    }

}

LayerT层代码

package LayerT;

import javax.annotation.Resource;

import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;

import Entity.EMP;
import Service.EMPService1;
import Service.EMPService2;
@Component("noteSupportedTest")
public class NotSupportedTest {
    @Resource(name="service1")
    EMPService1 service1;
    @Resource(name="service2")
    EMPService2 service2;
    /**
     * 外层方法没有事务，但是抛出异常
     * @param emp1
     * @param emp2
     */
    public void testNotSupportWithoutTransaction1(EMP emp1,EMP emp2) {
        service1.addEmp1(emp1);
        service2.addEmp2(emp2);
        throw new RuntimeException();
    }
    /**
     * 外层方法没有事务，内层方法抛出异常
     * @param emp1
     * @param emp2
     */
    public void testNotSupportWithoutTransaction2(EMP emp1,EMP emp2) {
        service1.addEmp1(emp1);
        service2.addEmp2WithException(emp2);
    }
    /**
     * 外层方法有事务，并且抛出异常
     * @param emp1
     * @param emp2
     */
    @Transactional
    public void testNotSupportWithTransaction1(EMP emp1,EMP emp2) {
        service1.addEmp1(emp1);//not_supported
        service2.addEmp2(emp2);//required
        throw new RuntimeException();
    }
    /**
     * 外层方法有事务，并且内存方法抛出异常
     * @param emp1
     * @param emp2
     * @param emp3
     */
    @Transactional
    public void testNotSupportWithTransaction2(EMP emp1,EMP emp2, EMP emp3) {
        service1.addEmp1(emp1);//not_supported
        service2.addEmp2(emp2);//required
        service2.addEmp2WithException(emp3);//not_supported
    }
}

测试代码

package TestCase;

import org.junit.Test;

import Entity.EMP;
import LayerT.NotSupportedTest;

public class notSupportedTestCase extends baseTest{
    @Test
    public void test1() {
        NotSupportedTest T1=ac.getBean("noteSupportedTest",NotSupportedTest.class);
        EMP emp1=new EMP("张三",18);
        EMP emp2=new EMP("李四",28);
        T1.testNotSupportWithoutTransaction1(emp1, emp2);
      }    
    @Test
    public void test2() {
        NotSupportedTest T1=ac.getBean("noteSupportedTest",NotSupportedTest.class);
        EMP emp1=new EMP("张三",18);
        EMP emp2=new EMP("李四",28);
        T1.testNotSupportWithoutTransaction2(emp1, emp2);
      }    
    @Test
    public void test3() {
        NotSupportedTest T1=ac.getBean("noteSupportedTest",NotSupportedTest.class);
        EMP emp1=new EMP("张三",18);
        EMP emp2=new EMP("李四",28);
        T1.testNotSupportWithTransaction1(emp1, emp2);
      }    
    @Test
    public void test4() {
        NotSupportedTest T1=ac.getBean("noteSupportedTest",NotSupportedTest.class);
        EMP emp1=new EMP("张三",18);
        EMP emp2=new EMP("李四",28);
        EMP emp3=new EMP("王五",22);
        T1.testNotSupportWithTransaction2(emp1, emp2, emp3);
      }    
}

测试结果

（1）外层方法没有事务

test1	张三插入，李四插入
test2	张三插入，李四插入

结论：当外层方法没有事务时，内层方法按照非事务方式执行。

（2）外层方法有事务

test3	张三插入，李四未插入
test4	张三插入，李四未插入，王五插入

结论：当外层方法事务传播属性设置为默认，只有声明REQUIRED的那个方法会受外层方法的影响，导致李四未插入，但是内层方法事务声明为NOT_SUPPORTED的方法，不论内层还是外层方法有异常，都不开启事务，出错也提交事务。

参考博文：https://segmentfault.com/a/1190000013341344