在Tomcat中加載WebappClassLoader時出錯

Question

在添加並配置新的servlet後，我嘗試啓動Tomcat並從NetBeans部署我的webapp。我在Tomcat錯誤日誌如下：

INFO: Marking servlet MyServlet as unavailable 
SEVERE: Error loading WebappClassLoader 
    delegate: false 
    repositories: 
    /WEB-INF/classes/ 
----------> Parent Classloader: 
org.apache.catalina.loader.StandardClassLoader@bb6086 
MyServlet 
java.lang.ClassNotFoundException: MyServlet 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) 
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1095) 
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:809) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) 
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) 
    at java.lang.Thread.run(Thread.java:619) 
SEVERE: Allocate exception for servlet MyServlet 
java.lang.ClassNotFoundException: MyServlet 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387) 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233) 
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1095) 
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:809) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) 
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454) 
    at java.lang.Thread.run(Thread.java:619) 

我使用NetBeans 6.8和Tomcat 6

Answer 1

的解決辦法是重新啓動NetBeans和重新部署web應用程序。看起來像一個NetBeans錯誤。