Question

我正在使用WAS 8.5，RAD

我开发了一个休息应用程序，它的lib中有ibm-wink-jaxrs.jar。

这是错误 -

com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Servlet Error]-[JAX-RS Servlet]: java.lang.NullPointerException
at org.apache.wink.common.internal.http.Accept.valueOf(Accept.java:139)
at org.apache.wink.server.internal.contexts.HttpHeadersImpl.getAcceptHeader(HttpHeadersImpl.java:151)
at org.apache.wink.server.internal.contexts.HttpHeadersImpl.getAcceptableMediaTypes(HttpHeadersImpl.java:105)
at org.apache.wink.server.internal.registry.ResourceRegistry.filterByProduces(ResourceRegistry.java:573)
at org.apache.wink.server.internal.registry.ResourceRegistry.filterDispatchMethods(ResourceRegistry.java:497)
at org.apache.wink.server.internal.registry.ResourceRegistry.findSubResourceMethod(ResourceRegistry.java:391)
at org.apache.wink.server.internal.handlers.FindResourceMethodHandler.handleSubResourceMethod(FindResourceMethodHandler.java:168)
at org.apache.wink.server.internal.handlers.FindResourceMethodHandler.handleRequest(FindResourceMethodHandler.java:110)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
at org.apache.wink.server.internal.handlers.FindRootResourceHandler.handleRequest(FindRootResourceHandler.java:95)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
at org.apache.wink.server.internal.handlers.HeadMethodHandler.handleRequest(HeadMethodHandler.java:53)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
at org.apache.wink.server.internal.handlers.OptionsMethodHandler.handleRequest(OptionsMethodHandler.java:46)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
at org.apache.wink.server.internal.handlers.SearchResultHandler.handleRequest(SearchResultHandler.java:33)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
at org.apache.wink.server.internal.log.ResourceInvocation.handleRequest(ResourceInvocation.java:92)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
at org.apache.wink.server.internal.log.Requests.handleRequest(Requests.java:76)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:26)
at org.apache.wink.server.handlers.RequestHandlersChain.handle(RequestHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:75)
at org.apache.wink.server.handlers.AbstractHandlersChain.run(AbstractHandlersChain.java:60)
at org.apache.wink.server.internal.RequestProcessor.handleRequestWithoutFaultBarrier(RequestProcessor.java:207)
at org.apache.wink.server.internal.RequestProcessor.handleRequest(RequestProcessor.java:154)
at org.apache.wink.server.internal.servlet.RestServlet.service(RestServlet.java:124)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
at com.ibm.ws.cache.servlet.ServletWrapper.serviceProxied(ServletWrapper.java:307)
at com.ibm.ws.cache.servlet.CacheHook.handleFragment(CacheHook.java:562)
at com.ibm.ws.cache.servlet.CacheHook.handleServlet(CacheHook.java:255)
at com.ibm.ws.cache.servlet.ServletWrapper.service(ServletWrapper.java:259)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1232)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:781)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:480)
at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:136)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:97)
at org.apache.wink.server.internal.servlet.contentencode.ContentEncodingResponseFilter.doFilter(ContentEncodingResponseFilter.java:122)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:195)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:967)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1107)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:947)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1817)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:463)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:530)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:316)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:287)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1892)

当我从我的项目的lib中删除ibm-wink-jaxrs.jar时这是我得到的错误

com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Servlet Error]-[JAX-RS Servlet]: java.lang.ClassNotFoundException: org.apache.wink.server.internal.servlet.contentencode.ContentEncodingResponseFilter
at java.lang.Class.forNameImpl(Native Method)
at java.lang.Class.forName(Class.java:263)
at com.sun.beans.finder.ClassFinder.findClass(ClassFinder.java:88)
at com.sun.beans.finder.ClassFinder.findClass(ClassFinder.java:123)
at java.beans.Beans.instantiate(Beans.java:219)
at java.beans.Beans.instantiate(Beans.java:89)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager._loadFilter(WebAppFilterManager.java:572)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.loadFilter(WebAppFilterManager.java:514)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.getFilterInstanceWrapper(WebAppFilterManager.java:319)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.getFilterChain(WebAppFilterManager.java:392)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:931)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1107)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3980)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1016)
at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1817)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:463)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:530)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:316)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:287)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1892)

这是web.xml文件

<web-app id="WebApp_ID" version="2.5"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <display-name>projectREST</display-name>
    <servlet>
            <servlet-name>ProxyServlet</servlet-name>
            <servlet-class>com.ibm.ws.ajaxproxy.servlet.ProxyServlet</servlet-class>
    </servlet>
    <servlet>
            <description>
            JAX-RS Tools Generated - Do not modify</description>
            <servlet-name>JAX-RS Servlet</servlet-name>
            <servlet-class>com.ibm.websphere.jaxrs.server.IBMRestServlet</servlet-class>
            <init-param>
                    <param-name>javax.ws.rs.Application</param-name>
                    <param-value>com.test.service.common.config.RESTApplication</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
            <servlet-name>ProxyServlet</servlet-name>
            <url-pattern>/proxy/*</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
            <servlet-name>JAX-RS Servlet</servlet-name>
            <url-pattern>/*</url-pattern>
    </servlet-mapping>
    <filter>
            <filter-name>ContentEncodingResponseFilter</filter-name>
            <filter-class>org.apache.wink.server.internal.servlet.contentencode.ContentEncodingResponseFilter</filter-class>
    </filter>
    <filter-mapping>
            <filter-name>ContentEncodingResponseFilter</filter-name>
            <url-pattern>/*</url-pattern>
    </filter-mapping>
    <welcome-file-list>
            <welcome-file>index.html</welcome-file>
            <welcome-file>index.htm</welcome-file>
            <welcome-file>index.jsp</welcome-file>
            <welcome-file>default.html</welcome-file>
            <welcome-file>default.htm</welcome-file>
            <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>

以下是我项目的lib中可用的jar文件列表

    AjaxProxy.jar
commons-beanutils.jar
commons-codec-1.3.jar
commons-httpclient-3.1.jar
commons-lang.jar
commons-logging-1.0.4.jar
datedFileAppender-1.0.2.jar
IBANUtility.jar
itext-1.3.1.jar
jackson-core-asl.jar
jackson-jaxrs.jar
jackson-mapper-asl.jar
jackson-xc.jar
jasperreports-3.0.0.jar
java-jwt.jar
jsr311-api.jar
log4j-1.2.16.jar
ServiceConsumer.jar
slf4j-api.jar
ibm-wink-jaxrs
slf4j-jdk14.jar

任何人都可以建议如何解决这个问题，我尝试删除IBM jar但没有运气。请帮忙。

Answer 1

尝试删除jsr311-api.jar（除了ivm-wink-jaxrs jar）。问题很可能是：http://www-01.ibm.com/support/docview.wss?uid=swg1PI27070

当用户应用程序打包自己的JAX-RS版本时会发生这种情况。尽管APAR的文本提到冲突是专门针对Jersey的，但我发现任何JAX-RS实现都可能导致冲突 - 甚至是WAS提供的Wink实现的副本。

似乎没有任何理由将IBM的Wink打包到应用程序中，因为它已经在应用程序服务器中可用。一些用户将打包新版本的JAX-RS实现（如CXF或Jersey）以获得比WAS 8.5提供的更新的API，但是这通常需要类似于parent_last委托的类加载器技巧，这会使事情变得更复杂。我的建议是使用WAS附带的IBM JAX-RS实现（Wink）。

请注意，如果您在同一服务器中还有其他应用程序也包含不同的实现，那么这些应用程序可能与此应用程序冲突 - 除非您在我提到的链接中应用了该修补程序 - 您可能还需要确保每个应用程序这些应用程序包含适当的JAX-RS API jar（即jsr311 jar）。

希望这有帮助，Andy

REST不与IBM WAS 8.5一起使用

1 个答案: