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當我運行該項目，我在瀏覽器中看到一個頁面，「HTTP錯誤：503 /問題訪問/EmployeeTracker.html原因：SERVICE_UNAVAILABLE」越來越SERVICE_UNAVAILABLE谷歌Web工具包
HTTP ERROR: 503
Problem accessing /EmployeeTracker.html. Reason:
Service Unavailable
Powered by Jetty://
下面是我的網頁。 xml文件：
<?xml version="1.0" encoding="UTF-8"?>
<web-app 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"
version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee">
<!-- Servlets -->
<!-- Default page to serve -->
<welcome-file-list>
<welcome-file>EmployeeTracker.html</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>JsonStockData</servlet-name>
<servlet-class>com.teamcenter.awc.employee.server.JsonStockData</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name></servlet-name>
<url-pattern>/employeetracker/stockPrices</url-pattern>
</servlet-mapping>
</web-app>
下面是堆棧跟蹤：
[WARN] Server class 'org.eclipse.jetty.servlet.listener.ELContextCleaner' could not be found in the web app, but was found on the system classpath
[WARN] Adding classpath entry 'file:/F:/workdir/eclipse-SDK-4.4.1-win32-x86_64/plugins/com.google.gwt.eclipse.sdkbundle_2.6.0/gwt-2.6.0/gwt-dev.jar' to the web app classpath for this session
For additional info see: file:/F:/workdir/eclipse-SDK-4.4.1-win32-x86_64/plugins/com.google.gwt.eclipse.sdkbundle_2.6.0/gwt-2.6.0/doc/helpInfo/webAppClassPath.html
Starting Jetty on port 0
[WARN] Failed startup of context c.g.g.d.s.j.WebAppContextWithReload{/,file:/D:/workdir/devunits/AWS/aw2.4.latest/eclipse/EmployeeTracker/war/},D:\workdir\devunits\AWS\aw2.4.latest\eclipse\EmployeeTracker\war
java.lang.reflect.InvocationTargetException
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:601)
at org.eclipse.jetty.webapp.IterativeDescriptorProcessor.visit(IterativeDescriptorProcessor.java:85)
at org.eclipse.jetty.webapp.IterativeDescriptorProcessor.process(IterativeDescriptorProcessor.java:72)
at org.eclipse.jetty.webapp.MetaData.resolve(MetaData.java:367)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1240)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:717)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:494)
at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:518)`enter code here`
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.handler.RequestLogHandler.doStart(RequestLogHandler.java:162)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.Server.doStart(Server.java:282)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:717)
at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:522)
at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1104)
at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:844)
at com.google.gwt.dev.DevMode.main(DevMode.java:322)
Caused by: java.lang.IllegalStateException: No such servlet:
at org.eclipse.jetty.servlet.ServletHandler.updateMappings(ServletHandler.java:1320)
at org.eclipse.jetty.servlet.ServletHandler.setServletMappings(ServletHandler.java:1414)
at org.eclipse.jetty.servlet.ServletHandler.addServletMapping(ServletHandler.java:896)
at org.eclipse.jetty.webapp.StandardDescriptorProcessor.addServletMapping(StandardDescriptorProcessor.java:1199)
at org.eclipse.jetty.webapp.StandardDescriptorProcessor.visitServletMapping(StandardDescriptorProcessor.java:632)
... 23 more
你有任何CL你如何解決它？