我的应用程序是用Neo4j和Spring / Spring Boot / REST Spring MVC编写的。 我有一堆单元/集成测试。当我通过REST用于测试Neo4j服务器时，一切正常，但是当我使用Embedded Neo4j时，我不断得到以下异常：
Caused by: java.io.IOException: Couldn't lock lock file test-db\lock because another process already holds the lock.
at org.neo4j.kernel.impl.nioneo.store.FileLock.getLockFileBasedFileLock(FileLock.java:120)
at org.neo4j.kernel.impl.nioneo.store.FileLock.getOsSpecificFileLock(FileLock.java:64)
at org.neo4j.kernel.DefaultFileSystemAbstraction.tryLock(DefaultFileSystemAbstraction.java:93)
at org.neo4j.kernel.StoreLocker.checkLock(StoreLocker.java:74)
... 167 common frames omitted
第二个测试总是失败。显然，在测试调用之间没有正确释放某些资源（Neo4j，Web应用程序）。现在我不知道如何正确释放资源..
这是我的Neo4Config：
@Configuration
@EnableNeo4jRepositories(basePackages = "com.example")
@EnableTransactionManagement(mode = AdviceMode.ASPECTJ)
public class Neo4jConfig extends Neo4jConfiguration implements BeanFactoryAware {
private static final String NEO4J_EMBEDDED_DATABASE_PATH_PROPERTY = "neo4j.embedded.database.path";
private static final String NEO4J_SERVER_DATABASE_URI_PROPERTY = "neo4j.server.database.uri";
@Resource
private Environment environment;
private BeanFactory beanFactory;
public Neo4jConfig() {
setBasePackage("com.example");
}
@Bean(destroyMethod = "shutdown")
public GraphDatabaseService graphDatabaseService() {
return new GraphDatabaseFactory().newEmbeddedDatabase(environment.getProperty(NEO4J_EMBEDDED_DATABASE_PATH_PROPERTY));
// return new SpringRestGraphDatabase(environment.getProperty(NEO4J_SERVER_DATABASE_URI_PROPERTY));
}
@Override
public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
this.beanFactory = beanFactory;
}
public BeanFactory getBeanFactory() {
return beanFactory;
}
}
这是我的应用程序主类：
@PropertySources({ @PropertySource(value = "classpath:application.properties") })
@ComponentScan("com.example")
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
例如，我的一个测试
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@SpringApplicationConfiguration(classes = Application.class)
@IntegrationTest("server.port: 0")
public class UsersControllerTest {
private final static String USERNAME = "username";
private final static String PASSWORD = "password";
private final static String EMAIL = "test@test.com";
@Value("${local.server.port}")
protected int port;
private RestTemplate restTemplate = new RestTemplate();
@Before
public void setUp() {
restTemplate.setErrorHandler(new DefaultResponseErrorHandler());
restTemplate.delete(format("http://localhost:%d/users/delete", port));
}
@After
public void tearDown() {
restTemplate.setErrorHandler(new DefaultResponseErrorHandler());
restTemplate.delete(format("http://localhost:%d/users/delete", port));
}
@Test
public void createUser() {
restTemplate.setErrorHandler(new ResponseErrorHandler() {
@Override
public boolean hasError(ClientHttpResponse response) throws IOException {
return RestUtils.isError(response.getStatusCode());
}
@Override
public void handleError(ClientHttpResponse response) throws IOException {
Assert.assertEquals(HttpStatus.BAD_REQUEST, response.getStatusCode());
}
});
User user = new User(USERNAME, PASSWORD, EMAIL);
Assert.assertNull(user.getId());
Assert.assertNull(user.getCreateDate());
User registeredUser = restTemplate.postForObject(format("http://localhost:%d/users/create", port), user, User.class);
Assert.assertNotNull(registeredUser);
Assert.assertNotNull(registeredUser.getId());
Assert.assertNotNull(registeredUser.getCreateDate());
restTemplate.postForObject(format("http://localhost:%d/users/create", port), user, User.class);
}
}
这种锁定问题可能是什么原因？
UPDATED： - 当我使用@DirtiesContext（classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD）时，为org.neo4j.graphdb.NotInTransactionException添加了完整的堆栈跟踪
org.neo4j.graphdb.NotInTransactionException: null
at org.neo4j.kernel.impl.persistence.PersistenceManager.getCurrentTransaction(PersistenceManager.java:297)
at org.neo4j.kernel.impl.persistence.PersistenceManager.getResource(PersistenceManager.java:249)
at org.neo4j.kernel.impl.persistence.PersistenceManager.currentKernelTransactionForReading(PersistenceManager.java:235)
at org.neo4j.kernel.impl.core.ThreadToStatementContextBridge.instance(ThreadToStatementContextBridge.java:55)
at org.neo4j.kernel.InternalAbstractGraphDatabase.createNode(InternalAbstractGraphDatabase.java:1135)
at org.springframework.data.neo4j.support.DelegatingGraphDatabase.createNode(DelegatingGraphDatabase.java:92)
at org.springframework.data.neo4j.support.mapping.EntityStateHandler.createNode(EntityStateHandler.java:151)
at org.springframework.data.neo4j.support.mapping.EntityStateHandler.useOrCreateState(EntityStateHandler.java:142)
at org.springframework.data.neo4j.support.mapping.Neo4jEntityConverterImpl.write(Neo4jEntityConverterImpl.java:163)
at org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister$CachedConverter.write(Neo4jEntityPersister.java:179)
at org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister.persist(Neo4jEntityPersister.java:243)
at org.springframework.data.neo4j.support.mapping.Neo4jEntityPersister.persist(Neo4jEntityPersister.java:231)
at org.springframework.data.neo4j.support.Neo4jTemplate.save(Neo4jTemplate.java:357)
at org.springframework.data.neo4j.support.Neo4jTemplate.save(Neo4jTemplate.java:351)
at com.example.domain.dao.user.UserDaoImpl.create(UserDaoImpl.java:32)
at com.example.domain.service.user.UserServiceImpl.create(UserServiceImpl.java:38)
at com.example.webservices.controller.users.UsersController.create(UsersController.java:29)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:777)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:706)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.oauth2.provider.authentication.OAuth2AuthenticationProcessingFilter.doFilter(OAuth2AuthenticationProcessingFilter.java:160)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:57)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1558)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1515)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
答案 0 :(得分：2)
尝试使用@DirtiesContext(classMode = DirtiesContext.ClassMode.AFTER_EACH_TEST_METHOD)注释您的测试。
否则，Spring会跨测试缓存上下文。