我在IBM WebSphere Application Server Liberty 17.0.0.2中部署了我的Web应用程序，当我尝试访问它时出现以下错误：
Error Message: javax.servlet.ServletException:
java.lang.NoClassDefFoundError: Could not initialize class
com.x.y.z
Error Code: 500
Target Servlet: com.ibm.ws.webcontainer.extension.DefaultExtensionProcessor
Error Stack: java.lang.NoClassDefFoundError: Could not initialize class com.x.y.z at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:207)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:1021)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1143)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:4983)
at com.ibm.ws.webcontainer31.osgi.webapp.WebApp31.handleRequest(WebApp31.java:528)
at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost$2.handleRequest(DynamicVirtualHost.java:315)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1025)
at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost$2.run(DynamicVirtualHost.java:280)
at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink$TaskWrapper.run(HttpDispatcherLink.java:967)
at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink.wrapHandlerAndExecute(HttpDispatcherLink.java:359)
at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink.ready(HttpDispatcherLink.java:318)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:471)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.handleNewRequest(HttpInboundLink.java:405)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.processRequest(HttpInboundLink.java:285)
at com.ibm.ws.http.channel.internal.inbound.HttpICLReadCallback.complete(HttpICLReadCallback.java:66)
at com.ibm.ws.tcpchannel.internal.WorkQueueManager.requestComplete(WorkQueueManager.java:504)
at com.ibm.ws.tcpchannel.internal.WorkQueueManager.attemptIO(WorkQueueManager.java:574)
at com.ibm.ws.tcpchannel.internal.WorkQueueManager.workerRun(WorkQueueManager.java:929)
at com.ibm.ws.tcpchannel.internal.WorkQueueManager$Worker.run(WorkQueueManager.java:1018)
答案 0 :(得分：1)
如果com.x.y.z是第三方软件包，则您需要在Liberty server.xml中设置第三方API软件包的可见性，以允许应用程序访问它们。