java.lang.ClassNotFoundException在第一次调用其余服务时

Question

您好我正在尝试使用Red Hat JBoss Developer Studio

为jboss 6.3开发rest应用程序

我有一个非常奇怪的问题：当我第一次通过fiddller访问我的休息服务时，我得到以下异常：

15:49:18,053 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/OASExtention-war].[javax.ws.rs.core.Application]] (http-localhost/127.0.0.1:8080-2) JBWEB000236: Servlet.service() for servlet javax.ws.rs.core.Application threw exception: java.lang.ClassNotFoundException: org.codehaus.jackson.xc.JaxbAnnotationIntrospector from [Module "deployment.OASExtention-war.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.3.Final-redhat-1]
    at org.codehaus.jackson.jaxrs.MapperConfigurator._resolveIntrospector(MapperConfigurator.java:169) [jackson-jaxrs-1.7.1.jar:1.7.1]
    at org.codehaus.jackson.jaxrs.MapperConfigurator._resolveIntrospectors(MapperConfigurator.java:144) [jackson-jaxrs-1.7.1.jar:1.7.1]
    at org.codehaus.jackson.jaxrs.MapperConfigurator._setAnnotations(MapperConfigurator.java:131) [jackson-jaxrs-1.7.1.jar:1.7.1]
    at org.codehaus.jackson.jaxrs.MapperConfigurator.getDefaultMapper(MapperConfigurator.java:70) [jackson-jaxrs-1.7.1.jar:1.7.1]
    at org.codehaus.jackson.jaxrs.JacksonJsonProvider.locateMapper(JacksonJsonProvider.java:609) [jackson-jaxrs-1.7.1.jar:1.7.1]
    at org.codehaus.jackson.jaxrs.JacksonJsonProvider.readFrom(JacksonJsonProvider.java:404) [jackson-jaxrs-1.7.1.jar:1.7.1]
    at org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:106) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.plugins.interceptors.encoding.GZIPDecodingInterceptor.read(GZIPDecodingInterceptor.java:63) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:109) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.MessageBodyParameterInjector.inject(MessageBodyParameterInjector.java:169) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.MethodInjectorImpl.injectArguments(MethodInjectorImpl.java:136) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:159) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:269) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:227) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:216) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:542) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:524) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:126) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50) [resteasy-jaxrs-2.3.8.Final-redhat-3.jar:]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:231) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169) [jboss-as-web-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:145) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:926) [jbossweb-7.4.8.Final-redhat-4.jar:7.4.8.Final-redhat-4]
    at java.lang.Thread.run(Unknown Source) [rt.jar:1.8.0_73]

服务器返回状态代码500.请注意，首次调用服务时会发生这种情况。在第二次呼叫休息服务按预期工作。

我的功能看起来像这样

@POST
@Path("matterNote")
@Consumes("application/json") 
@Produces("application/json")
public String matterNoteFunction(JSONObject json) throws IOException{ return "bla"; }

我真的很困惑，等待任何建议。

编辑：

我尝试添加Download jackson-xc.jar但是遇到了异常（首次调用服务时）：

java.lang.VerifyError: class org.codehaus.jackson.xc.JaxbAnnotationIntrospector overrides final method findDeserializer.(Lorg/codehaus/jackson/map/introspect/Annotated;)Ljava/lang/Object;
    java.lang.ClassLoader.defineClass1(Native Method)
    java.lang.ClassLoader.defineClass(Unknown Source)
    org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:361)
    org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:482)
    org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:277)
    org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:92)
    org.jboss.modules.Module.loadModuleClass(Module.java:568)
    org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:205)
    org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459)
    org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408)
    org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389)
    org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134)
    org.codehaus.jackson.jaxrs.MapperConfigurator._resolveIntrospector(MapperConfigurator.java:169)
    org.codehaus.jackson.jaxrs.MapperConfigurator._resolveIntrospectors(MapperConfigurator.java:144)
    org.codehaus.jackson.jaxrs.MapperConfigurator._setAnnotations(MapperConfigurator.java:131)
    org.codehaus.jackson.jaxrs.MapperConfigurator.getDefaultMapper(MapperConfigurator.java:70)
    org.codehaus.jackson.jaxrs.JacksonJsonProvider.locateMapper(JacksonJsonProvider.java:609)
    org.codehaus.jackson.jaxrs.JacksonJsonProvider.readFrom(JacksonJsonProvider.java:404)
    org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:106)
    org.jboss.resteasy.plugins.interceptors.encoding.GZIPDecodingInterceptor.read(GZIPDecodingInterceptor.java:63)
    org.jboss.resteasy.core.interception.MessageBodyReaderContextImpl.proceed(MessageBodyReaderContextImpl.java:109)
    org.jboss.resteasy.core.MessageBodyParameterInjector.inject(MessageBodyParameterInjector.java:169)
    org.jboss.resteasy.core.MethodInjectorImpl.injectArguments(MethodInjectorImpl.java:136)
    org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:159)
    org.jboss.resteasy.core.ResourceMethod.invokeOnTarget(ResourceMethod.java:269)
    org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:227)
    org.jboss.resteasy.core.ResourceMethod.invoke(ResourceMethod.java:216)
    org.jboss.resteasy.core.SynchronousDispatcher.getResponse(SynchronousDispatcher.java:542)
    org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:524)
    org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:126)
    org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:208)
    org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:55)
    org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:50)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

谢谢。

Answer 1

我遇到了同样的问题（使用Spring）：

<dependency>
        <groupId>org.apache.cxf</groupId>
        <artifactId>cxf-rt-rs-extension-providers</artifactId>
        <version>3.0.2</version>
    </dependency>
    <dependency>
        <groupId>org.codehaus.jackson</groupId>
        <artifactId>jackson-jaxrs</artifactId>
        <version>1.9.0</version>
    </dependency>

但是当我通过mapper定义在beans.xml中扩展提供程序定义时：

<jaxrs:providers>
        <bean class="org.codehaus.jackson.jaxrs.JacksonJsonProvider">
            <property name="mapper" ref="jacksonMapper" />
        </bean>
</jaxrs:providers>
<bean id="jacksonMapper" class="org.codehaus.jackson.map.ObjectMapper" />

它在没有初始异常的情况下开始工作。

Answer 2

I think XC Jackson lib is optional and The XC package allows you to use Xml Annotations (JAXB) in addition to the Jackson Annotations for mapping classes unless you need JAXB support just ignore the issue.

Answer 3

我按照以下方式解决了问题：在我的应用程序中，我使用的是json-lib.jar，它需要在类路径中呈现其他依赖项才能正常运行。我删除了旧的依赖项，然后添加了以下内容：

问题消失了。