Question

使用Spring Boot + My Batis Spring Boot创建测试时遇到问题我为我的地图制作者创建了几个U. Test。对于插入，我使用@SelectKey注释来获取序列的下一个值。当Spring回滚时，事务不会回滚序列，并在每个应用程序启动时递增它。

FE。

@RunWith(SpringRunner.class)
@ActiveProfiles(profiles = "local")
@SpringBootTest
@Slf4j
@Transactional
public class MultimediaMapperTest {

    @Autowired
    private MultimediaMapper multimediaMapper;

    @Autowired
    private IEmpresasService empresasService;



    @Test
    public void insertArchivo() {
        Multimedia archivo = Multimedia.builder()
                .tiposEntidad(TiposEntidad.EMP)
                .idEntidad(1)
                .awsKey("KEY_AMAZON_WEB_SERVICES")
                .nomFichero("fichero.txt")
                .mime("application/pdf")
                .observaciones("prueba observaciones")
                .build();

        multimediaMapper.insertArchivos(archivo);
        log.debug("Fin de la inserción de {}", archivo);
        assertThat(archivo.getIdArchivo(), is(notNullValue()));

    }

日志：

首先开始：


[INFO ] 2018-04-23 21:44:16,369 [] o.s.c.s.DefaultLifecycleProcessor - Starting beans in phase 2147483647
[INFO ] 2018-04-23 21:44:16,369 [] s.d.s.w.p.DocumentationPluginsBootstrapper - Context refreshed
[INFO ] 2018-04-23 21:44:16,396 [] s.d.s.w.p.DocumentationPluginsBootstrapper - Found 1 custom documentation plugin(s)
[INFO ] 2018-04-23 21:44:16,470 [] s.d.s.w.s.ApiListingReferenceScanner - Scanning for api listing references
[INFO ] 2018-04-23 21:44:16,880 [] e.g.m.a.d.MultimediaMapperTest - Started MultimediaMapperTest in 7.035 seconds (JVM running for 8.255)
[INFO ] 2018-04-23 21:44:18,600 [] o.s.t.c.t.TransactionContext - Began transaction (1) for test context [DefaultTestContext@40d10264 testClass = MultimediaMapperTest, testInstance = es.gogroup.module.archivos.dao.MultimediaMapperTest@6edd4fe2, testMethod = insertArchivo@MultimediaMapperTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@2773504f testClass = MultimediaMapperTest, locations = '{}', classes = '{class es.gogroup.PanchoApplication}', contextInitializerClasses = '[]', activeProfiles = '{local}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.context.SpringBootTestContextCustomizer@2a798d51, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@37afeb11, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@245b4bdc, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@1b7cc17c], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]]]; transaction manager [org.springframework.jdbc.datasource.DataSourceTransactionManager@cfb94fd]; rollback [true]
[DEBUG] 2018-04-23 21:44:18,662 [] e.g.m.m.d.M.insertArchivos!selectKey - ==>  Preparing: SELECT pg_catalog.nextval('"SEQ_MULTIMEDIA"'); 
[DEBUG] 2018-04-23 21:44:18,689 [] e.g.m.m.d.M.insertArchivos!selectKey - ==> Parameters: 
[DEBUG] 2018-04-23 21:44:18,759 [] e.g.m.m.d.M.insertArchivos!selectKey -   Preparing: INSERT INTO MULTIMEDIA(ID_ARCHIVO,TIPO_ENTIDAD, ID_ENTIDAD,AWS_KEY, NOM_FICHERO, OBSERVACIONES, MIME) VALUES (?,?,?,?, ?, ?, ?) 
[DEBUG] 2018-04-23 21:44:18,767 [] e.g.m.m.d.M.insertArchivos - ==> Parameters: 15(Integer), EMP(String), 1(Integer), KEY_AMAZON_WEB_SERVICES(String), fichero.txt(String), prueba observaciones(String), application/pdf(String)
[DEBUG] 2018-04-23 21:44:18,803 [] e.g.m.m.d.M.insertArchivos -

下一步开始：


[INFO ] 2018-04-23 21:58:15,778 [] o.s.t.c.t.TransactionContext - Began transaction (1) for test context [DefaultTestContext@40d10264 testClass = MultimediaMapperTest, testInstance = es.gogroup.module.archivos.dao.MultimediaMapperTest@6edd4fe2, testMethod = insertArchivo@MultimediaMapperTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@2773504f testClass = MultimediaMapperTest, locations = '{}', classes = '{class es.gogroup.PanchoApplication}', contextInitializerClasses = '[]', activeProfiles = '{local}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.context.SpringBootTestContextCustomizer@2a798d51, org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@37afeb11, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@245b4bdc, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@1b7cc17c], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]]]; transaction manager [org.springframework.jdbc.datasource.DataSourceTransactionManager@cfb94fd]; rollback [true]
[DEBUG] 2018-04-23 21:58:15,856 [] e.g.m.m.d.M.insertArchivos!selectKey - ==>  Preparing: SELECT pg_catalog.nextval('"SEQ_MULTIMEDIA"'); 
[DEBUG] 2018-04-23 21:58:15,888 [] e.g.m.m.d.M.insertArchivos!selectKey - ==> Parameters: 
[DEBUG] 2018-04-23 21:58:15,954 [] e.g.m.m.d.M.insertArchivos!selectKey -   Preparing: INSERT INTO MULTIMEDIA(ID_ARCHIVO,TIPO_ENTIDAD, ID_ENTIDAD,AWS_KEY, NOM_FICHERO, OBSERVACIONES, MIME) VALUES (?,?,?,?, ?, ?, ?) 
[DEBUG] 2018-04-23 21:58:15,964 [] e.g.m.m.d.M.insertArchivos - ==> Parameters: 16(Integer), EMP(String), 1(Integer), KEY_AMAZON_WEB_SERVICES(String), fichero.txt(String), prueba observaciones(String), application/pdf(String)
[DEBUG] 2018-04-23 21:58:16,001 [] e.g.m.m.d.M.insertArchivos -

Answer 1

无法回滚数据库序列。这是一个功能，而不是一个bug。：）

PostgreSQL：

重要说明：避免阻止获取的并发事务来自相同序列的数字，从不滚动nextval操作背部;也就是说，一旦获取了一个值，就会被认为是使用过的，即使稍后执行nextval的事务也会中止。这意味着中止的事务可能会在序列中留下未使用的“漏洞” 分配值。

Oracle：

生成序列号后，序列号可用仅限于生成该数字的会话。独立于提交或回滚的事务，其他用户引用 order_seq.NEXTVAL获取唯一值。如果两个用户正在访问同时执行相同的序列，然后每个用户的序列号接收可能有间隙因为序列号也在由其他用户生成。

SQL Server：

序列号是在当前范围之外生成的交易。他们是否使用该交易消费序列号已提交或回滚。

Mybatis没有回滚序列

1 个答案: