0
當我通過eclipse啓動tomcat時，在控制檯中得到這個異常。我不明白什麼是錯的，找不到解決問題的方法。Eclipse Error Loading WebappClassLoader
SEVERE: Error loading WebappClassLoader
delegate: false
repositories:
----------> Parent Classloader:
[email protected]
bm._.ops.web.DataServlet
java.lang.ClassNotFoundException: bm._.ops.web.DataServlet
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1438)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1284)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1068)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3996)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4266)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:634)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:561)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:496)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1203)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
Mar 26, 2014 10:34:31 AM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet /ops threw load() exception
java.lang.ClassNotFoundException: bm._.ops.web.DataServlet
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1438)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1284)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1068)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:966)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3996)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4266)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:634)
at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:561)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:496)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1203)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:319)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:736)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:448)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:295)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:433)
編輯： web.xml中
<web-app 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_3_0.xsd"
version="3.0"
metadata-complete="true">
<description>
OpsTools
</description>
<display-name>OpsTools</display-name>
<servlet>
<servlet-name>test</servlet-name>
<servlet-class> bm._.ops.web.Test</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>test</servlet-name>
<url-pattern>/test</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>upload</servlet-name>
<servlet-class> bm._.ops.web.FileUploadServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>upload</servlet-name>
<url-pattern>/upload</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>fileUpload</servlet-name>
<servlet-class> bm._.ops.web.FileUpload</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>fileUpload</servlet-name>
<url-pattern>/fileUpload</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>data</servlet-name>
<servlet-class> bm._.ops.web.DataServlet</servlet-class>
<init-param>
<param-name>propertyFileName</param-name>
<param-value>vcaps.properties</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>data</servlet-name>
<url-pattern>/data</url-pattern>
</servlet-mapping>
</web-app>
我已經編輯我的問題，包括web.xml文件 – kschieck
沒有在聲明的開頭空間「< servlet的類>（在這裏）bm.validsur」。您的web.xml必須位於WEB-Inf文件夾中。 – sadzag
我的web.xml文件的路徑是'WORKSPACE \ uploadTool \ WebContent \ WEB-INF \ web.xml' – kschieck