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 ssoFilter javax.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.<init>(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 IllegalAnnotationExceptions javax.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.GetLoginUser javax.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 more Caused by: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 2 counts of IllegalAnnotationExceptions javax.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.GetLoginUser javax.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$Builder.check(IllegalAnnotationsException.java:91) at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:442) at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:274) at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:125) at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl$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。