java - 添加 ContentNegotiatingViewResolver 时出现内部服务器错误

Question

我添加了“ContentNegotiatingViewResolver”，但之后出现 500 错误。您能帮忙找出可能出现的问题吗？

我已经有了可以正常工作的 InternalResourceViewResolver。

servlet-config.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:mvc="http://www.springframework.org/schema/mvc"
  xmlns:context="http://www.springframework.org/schema/context"
  xmlns:p="http://www.springframework.org/schema/p"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

  <mvc:annotation-driven/>

  <context:component-scan base-package="com.pluralsight.controller"/>

  <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
    <property name="order" value="1"></property>
    <property name="contentNegotiationManager">
      <bean class="org.springframework.web.accept.ContentNegotiationManager">
        <constructor-arg>
          <bean class="org.springframework.web.accept.PathExtensionContentNegotiationStrategy">
            <constructor-arg>
              <map>
                <entry key="json" value="application/json"></entry>
                <entry key="xml" value="application/xml"></entry>
              </map>
            </constructor-arg>
          </bean>
        </constructor-arg>
      </bean>
    </property>

    <property name="defaultViews">
      <list>
        <bean class="org.springframework.web.servlet.view.json.MappingJackson2JsonView"></bean>
        <bean class="org.springframework.web.servlet.view.xml.MarshallingView">
          <constructor-arg>
            <bean class="org.springframework.oxm.xstream.XStreamMarshaller">
              <property name="autodetectAnnotations" value="true"></property>
            </bean>
          </constructor-arg>
        </bean>
      </list>
    </property>

  </bean>


  <mvc:resources mapping="/pdfs/**" location="pdfs"/>

  <mvc:interceptors>
    <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor"
      p:paramName="language"/>
  </mvc:interceptors>

  <bean id="localeResolver" class="org.springframework.web.servlet.i18n.SessionLocaleResolver"
    p:defaultLocale="en"/>

  <bean id="messageSource"
    class="org.springframework.context.support.ResourceBundleMessageSource"
    p:basename="messages"/>

  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
    p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" p:order="2"/>

  <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" p:order="0"/>
</beans>

web.xml:

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
         http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
  version="3.1">

  <servlet>
    <servlet-name>fitTrackerServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/config/servlet-config.xml</param-value>
    </init-param>
  </servlet>

  <servlet-mapping>
    <servlet-name>fitTrackerServlet</servlet-name>
    <url-pattern>*.html</url-pattern>
  </servlet-mapping>

  <servlet-mapping>
    <servlet-name>fitTrackerServlet</servlet-name>
    <url-pattern>/pdfs/**</url-pattern>
  </servlet-mapping>

  <servlet-mapping>
    <servlet-name>fitTrackerServlet</servlet-name>
    <url-pattern>*.json</url-pattern>
  </servlet-mapping>

  <display-name>Archetype Created Web Application</display-name>

</web-app>

pom.xml:

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.pluralsight</groupId>
  <artifactId>FitnessTracker</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>FitnessTracker Maven Webapp</name>
  <url>http://www.example.com</url>

  <dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.10.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>6.0.2.Final</version>
    </dependency>
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-mapper-asl</artifactId>
      <version>1.9.13</version>
    </dependency>
    <dependency>
      <groupId>com.thoughtworks.xstream</groupId>
      <artifactId>xstream</artifactId>
      <version>1.4.4</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>4.3.10.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.4</version>
    </dependency>

    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.4</version>
    </dependency>

  </dependencies>

</project>

错误的堆栈跟踪:

09-May-2018 15:31:51.413 INFO [http-nio-8080-exec-4] org.springframework.web.servlet.DispatcherServlet.initServletBean FrameworkServlet 'fitTrackerServlet': initialization started
09-May-2018 15:31:51.414 INFO [http-nio-8080-exec-4] org.springframework.web.context.support.XmlWebApplicationContext.prepareRefresh Refreshing WebApplicationContext for namespace 'fitTrackerServlet-servlet': startup date [Wed May 09 15:31:51 IST 2018]; root of context hierarchy
09-May-2018 15:31:51.414 INFO [http-nio-8080-exec-4] org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions Loading XML bean definitions from ServletContext resource [/WEB-INF/config/servlet-config.xml]
09-May-2018 15:31:51.571 INFO [http-nio-8080-exec-4] org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.register Mapped "{[/addGoal],methods=[POST]}" onto public java.lang.String com.pluralsight.controller.GoalController.updateGoal(com.pluralsight.model.Goal,org.springframework.validation.BindingResult)
09-May-2018 15:31:51.571 INFO [http-nio-8080-exec-4] org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.register Mapped "{[/addGoal],methods=[GET]}" onto public java.lang.String com.pluralsight.controller.GoalController.addGoal(org.springframework.ui.Model)
09-May-2018 15:31:51.572 INFO [http-nio-8080-exec-4] org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.register Mapped "{[/greeting]}" onto public java.lang.String com.pluralsight.controller.HelloController.sayHello(org.springframework.ui.Model)
09-May-2018 15:31:51.572 INFO [http-nio-8080-exec-4] org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.register Mapped "{[/addMinutes]}" onto public java.lang.String com.pluralsight.controller.MinutesController.addMinutes(com.pluralsight.model.Exercise)
09-May-2018 15:31:51.573 INFO [http-nio-8080-exec-4] org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.register Mapped "{[/activities],methods=[GET]}" onto public java.util.List<com.pluralsight.model.Activity> com.pluralsight.controller.MinutesController.listAllActivities()
09-May-2018 15:31:51.687 INFO [http-nio-8080-exec-4] org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.initControllerAdviceCache Looking for @ControllerAdvice: WebApplicationContext for namespace 'fitTrackerServlet-servlet': startup date [Wed May 09 15:31:51 IST 2018]; root of context hierarchy
09-May-2018 15:31:51.712 INFO [http-nio-8080-exec-4] org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.initControllerAdviceCache Looking for @ControllerAdvice: WebApplicationContext for namespace 'fitTrackerServlet-servlet': startup date [Wed May 09 15:31:51 IST 2018]; root of context hierarchy
09-May-2018 15:31:51.808 WARNING [http-nio-8080-exec-4] org.springframework.web.context.support.XmlWebApplicationContext.refresh Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.ContentNegotiatingViewResolver#0' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Cannot create inner bean 'org.springframework.web.servlet.view.xml.MarshallingView#53faebd5' of type [org.springframework.web.servlet.view.xml.MarshallingView] while setting bean property 'defaultViews' with key [1]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.xml.MarshallingView#53faebd5' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Cannot create inner bean 'org.springframework.oxm.xstream.XStreamMarshaller#73e1d613' of type [org.springframework.oxm.xstream.XStreamMarshaller] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.oxm.xstream.XStreamMarshaller#73e1d613' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: com/thoughtworks/xstream/core/ClassLoaderReference
09-May-2018 15:31:51.810 SEVERE [http-nio-8080-exec-4] org.springframework.web.servlet.DispatcherServlet.initServletBean Context initialization failed
 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.ContentNegotiatingViewResolver#0' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Cannot create inner bean 'org.springframework.web.servlet.view.xml.MarshallingView#53faebd5' of type [org.springframework.web.servlet.view.xml.MarshallingView] while setting bean property 'defaultViews' with key [1]; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.xml.MarshallingView#53faebd5' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Cannot create inner bean 'org.springframework.oxm.xstream.XStreamMarshaller#73e1d613' of type [org.springframework.oxm.xstream.XStreamMarshaller] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.oxm.xstream.XStreamMarshaller#73e1d613' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: com/thoughtworks/xstream/core/ClassLoaderReference
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:313)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:122)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveManagedList(BeanDefinitionValueResolver.java:382)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:157)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1531)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1276)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:171)
    at javax.servlet.GenericServlet.init(GenericServlet.java:158)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1124)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1079)
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:761)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:133)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:651)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:407)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:754)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1376)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.view.xml.MarshallingView#53faebd5' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Cannot create inner bean 'org.springframework.oxm.xstream.XStreamMarshaller#73e1d613' of type [org.springframework.oxm.xstream.XStreamMarshaller] while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.oxm.xstream.XStreamMarshaller#73e1d613' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: com/thoughtworks/xstream/core/ClassLoaderReference
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:313)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:122)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:648)
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:145)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1193)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1095)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299)
    ... 41 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.oxm.xstream.XStreamMarshaller#73e1d613' defined in ServletContext resource [/WEB-INF/config/servlet-config.xml]: Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: com/thoughtworks/xstream/core/ClassLoaderReference
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299)
    ... 49 more
Caused by: java.lang.NoClassDefFoundError: com/thoughtworks/xstream/core/ClassLoaderReference
    at org.springframework.oxm.xstream.XStreamMarshaller.constructXStream(XStreamMarshaller.java:410)
    at org.springframework.oxm.xstream.XStreamMarshaller.buildXStream(XStreamMarshaller.java:398)
    at org.springframework.oxm.xstream.XStreamMarshaller.afterPropertiesSet(XStreamMarshaller.java:389)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
    ... 52 more

Answer 1

问题是我使用了不兼容版本的依赖项。一旦我更新了这些，这个问题就解决了。

更新了pom.xml:

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.pluralsight</groupId>
  <artifactId>FitnessTracker</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>FitnessTracker Maven Webapp</name>
  <url>http://www.example.com</url>

  <dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.10.RELEASE</version>
      <scope>compile</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>6.0.2.Final</version>
    </dependency>
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-mapper-asl</artifactId>
      <version>1.9.13</version>
    </dependency>
    <dependency>
      <groupId>com.thoughtworks.xstream</groupId>
      <artifactId>xstream</artifactId>
      <version>1.4.10</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>4.3.10.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.4</version>
    </dependency>

    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.4</version>
    </dependency>

  </dependencies>

</project>