我有一个项目,它使用spring-mvc和spring-data依赖项:
<dependencies>
<!--Database dependencies-->
<dependency>
<groupId>postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.1-901-1.jdbc4</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.0.7.Final</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.9.4.RELEASE</version>
</dependency>
<!--Basic spring dependencies-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
<!--Tests dependencies-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
<!--Web dependencies-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
我的课程:
存储库:
@Transactional
public interface MeetingRepository extends JpaRepository<Meeting, Long> {
}
控制器:
@Controller@RequestMapping("/meetings")
public class MeetingController {
@Autowired
private MeetingRepository meetingRepository;
@RequestMapping("/hello")
public String helloWorld(Model model) {
Meeting meeting = new Meeting();
meeting.setAddedDate(new Date());
meeting.setMeetingDate(new Date(System.currentTimeMillis() + 604800000)); //1 week later
meeting.setNotes("My firt meeting.");
meeting.setPlace("Room 200");
meetingRepository.save(meeting);
model.addAttribute("meeting", meeting);
return "helloWorld2";
}
}
配置类:
@Configuration
@ComponentScan
public class AppConfig {
}
@Configuration
@EnableJpaRepositories(basePackages = "com.szymon.repository")
public class DataAccessConfig {
@Bean
public LocalEntityManagerFactoryBean entityManagerFactory() {
LocalEntityManagerFactoryBean localEntityManagerFactoryBean = new LocalEntityManagerFactoryBean();
localEntityManagerFactoryBean.setPersistenceUnitName("postgres");
return localEntityManagerFactoryBean;
}
@Bean
public JpaTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
jpaTransactionManager.setEntityManagerFactory(entityManagerFactory);
return jpaTransactionManager;
}
}
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.szymon.controller")
public class WebMvcConfig {
@Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
}
public class WebInitializer implements WebApplicationInitializer {
public void onStartup(ServletContext container) throws ServletException {
AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
ctx.register(WebMvcConfig.class);
ctx.setServletContext(container);
ServletRegistration.Dynamic servlet = container.addServlet("dispatcher", new DispatcherServlet(ctx));
servlet.setLoadOnStartup(1);
servlet.addMapping("/");
}
}
当我尝试测试存储库时:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = DataAccessConfig.class)
public class MeetingRepositoryTest {
@Autowired
private MeetingRepository meetingRepository;
@Test
public void test() {
Meeting meeting = new Meeting();
meeting.setAddedDate(new Date());
meeting.setMeetingDate(new Date(System.currentTimeMillis() + 604800000));
meeting.setNotes("My first meeting.");
meeting.setPlace("Room 200");
meetingRepository.save(meeting);
Assert.assertTrue(true);
}
}
我得到了奇怪的错误:
java.lang.NoSuchMethodError: org.springframework.beans.factory.config.ConfigurableListableBeanFactory.clearMetadataCache()V
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:185)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:678)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:520)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:125)
at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:109)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:261)
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:74)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:211)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
另外,如果我尝试使用localhost与控制器连接:8080 / meetings / hello我得到错误:
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:980)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.NullPointerException
com.szymon.controller.MeetingController.helloWorld(MeetingController.java:33)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:497)
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
但最奇怪的是,如果我删除了spring-context
依赖关系,那么测试传递得很好,但是控制器得到了不同的错误,他无法自动连接一些bean。
我是Spring数据的新手,还有Spring mvc。我知道如何编写实体,控制器和ropositories类,但我仍然遇到配置问题。你知道为什么测试在删除依赖项之后有效,为什么不使用它呢?最后如何让它一起工作?
答案 0 :(得分:0)
如何阅读这样的树?您会注意到有一个ehcache-spring-annotation(从底部开始的第4个)需要先前版本的slf4j-api(版本1.6.2中从底部开始的第3个版本)。但是更新版本的slf4j-api是硬编码的(从上面开始)。
现在,当在clearMetadataCache
中删除版本1.6.1
中的方法1.6.6
的示例中的slf4j时,会抛出此类NoSuchMethodError
。
答案 1 :(得分:0)
由于错误日志表明Spring无法自动装配MeetingController,因为它无法自动装配MeetingRepository。因此,如果您已添加@Repository以确保Spring可以自动装配它,或者确保Spring将扫描组件包,请检查MeetingRepository实现。
答案 2 :(得分:0)
您应该考虑使用Spring IO Platform,它应该解决有关spring依赖项的版本问题。
有关详细信息,请参阅enter link description here。 另外,要么使用spring-data-jpa,要么不使用它。我会使用它,spring-data repsitories非常简单和强大。在这种情况下,EntityManager依赖关系不是必需的。