webservice，作为web开发人员来说必须掌握的一门技术，它的好处这里就不多说了，eclipse中自带了一种生成webservice的 方法，使用JAX-WS，如果我没有弄错的话，它需要javaEE5.0、JDK1.5以上，了解完这些就开始写接口方法。各种随心所欲。不料在用 eclipse生成webservice时出现错误了，生成不了，错误信息如下“ An internal error occurred during: "Generating JAX-WS Web Services". Unable to create JAXBContext ”  ,错误堆栈如下:

十一月 16, 2015 1:01:32 下午 org.apache.catalina.core.ApplicationContext log信息: Initializing Spring root WebApplicationContext十一月 16, 2015 1:01:35 下午 org.apache.catalina.core.StandardContext filterStart严重: Exception starting filter ssoFilterjavax.xml.ws.WebServiceException: Unable to create JAXBContext    at com.sun.xml.internal.ws.model.AbstractSEIModelImpl.createJAXBContext(AbstractSEIModelImpl.java:156)    at com.sun.xml.internal.ws.model.AbstractSEIModelImpl.postProcess(AbstractSEIModelImpl.java:84)    at com.sun.xml.internal.ws.model.RuntimeModeler.buildRuntimeModel(RuntimeModeler.java:234)    at com.sun.xml.internal.ws.server.EndpointFactory.createSEIModel(EndpointFactory.java:328)    at com.sun.xml.internal.ws.server.EndpointFactory.createEndpoint(EndpointFactory.java:190)    at com.sun.xml.internal.ws.api.server.WSEndpoint.create(WSEndpoint.java:498)    at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.createEndpoint(EndpointImpl.java:246)    at com.sun.xml.internal.ws.transport.http.server.EndpointImpl.publish(EndpointImpl.java:170)    at com.sun.xml.internal.ws.spi.ProviderImpl.createAndPublishEndpoint(ProviderImpl.java:118)    at javax.xml.ws.Endpoint.publish(Endpoint.java:240)    at com.pcitc.sso.client.SSOFilter.init(SSOFilter.java:42)    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)    at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)    at org.apache.catalina.core.ApplicationFilterConfig.
     
      (ApplicationFilterConfig.java:115)    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4038)    at org.apache.catalina.core.StandardContext.start(StandardContext.java:4692)    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799)    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779)    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)    at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142)    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1061)    at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)    at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)    at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463)    at org.apache.catalina.core.StandardService.start(StandardService.java:525)    at org.apache.catalina.core.StandardServer.start(StandardServer.java:701)    at org.apache.catalina.startup.Catalina.start(Catalina.java:585)    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)    at java.lang.reflect.Method.invoke(Method.java:606)    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)Caused by: java.security.PrivilegedActionException: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 2 counts of IllegalAnnotationExceptionsjavax.servlet.http.HttpServletRequest is an interface, and JAXB can't handle interfaces.    this problem is related to the following location:        at javax.servlet.http.HttpServletRequest        at public javax.servlet.http.HttpServletRequest com.pcitc.sso.client.webservice.jaxws.GetLoginUser.arg0        at com.pcitc.sso.client.webservice.jaxws.GetLoginUserjavax.servlet.http.HttpServletResponse is an interface, and JAXB can't handle interfaces.    this problem is related to the following location:        at javax.servlet.http.HttpServletResponse        at public javax.servlet.http.HttpServletResponse com.pcitc.sso.client.webservice.jaxws.GetLoginUser.arg1        at com.pcitc.sso.client.webservice.jaxws.GetLoginUser    at java.security.AccessController.doPrivileged(Native Method)    at com.sun.xml.internal.ws.model.AbstractSEIModelImpl.createJAXBContext(AbstractSEIModelImpl.java:143)    ... 37 moreCaused by: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 2 counts of IllegalAnnotationExceptionsjavax.servlet.http.HttpServletRequest is an interface, and JAXB can't handle interfaces.    this problem is related to the following location:        at javax.servlet.http.HttpServletRequest        at public javax.servlet.http.HttpServletRequest com.pcitc.sso.client.webservice.jaxws.GetLoginUser.arg0        at com.pcitc.sso.client.webservice.jaxws.GetLoginUserjavax.servlet.http.HttpServletResponse is an interface, and JAXB can't handle interfaces.    this problem is related to the following location:        at javax.servlet.http.HttpServletResponse        at public javax.servlet.http.HttpServletResponse com.pcitc.sso.client.webservice.jaxws.GetLoginUser.arg1        at com.pcitc.sso.client.webservice.jaxws.GetLoginUser    at com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException$Builder.check(IllegalAnnotationsException.java:91)    at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:442)    at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.
      
       (JAXBContextImpl.java:274)    at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.
       
        (JAXBContextImpl.java:125)    at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1127)    at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:173)    at com.sun.xml.internal.bind.api.JAXBRIContext.newInstance(JAXBRIContext.java:95)    at com.sun.xml.internal.ws.developer.JAXBContextFactory$1.createJAXBContext(JAXBContextFactory.java:98)    at com.sun.xml.internal.ws.model.AbstractSEIModelImpl$1.run(AbstractSEIModelImpl.java:151)    at com.sun.xml.internal.ws.model.AbstractSEIModelImpl$1.run(AbstractSEIModelImpl.java:143)    ... 39 more十一月 16, 2015 1:01:35 下午 org.apache.catalina.core.ApplicationContext log信息: Closing Spring root WebApplicationContext
       
      
     

真心让人郁闷，尤其是刚开始搞webservice的时候。其实仔细阅读一下堆栈信息就会发现，说 HttpServletRequest ,HttpServletResponse 是一个接口，而JAXB不能处理接口。记得网上有人说 JAX-WS只支持基本数据类型，int、String等，其实不是的，JAX支持的数据类型很多，List、HashMap、自定义对象等等都没问题， 只是不能处理接口，那就在方法的参数和返回值上不要有接口就好了。