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这个 jar 没有在本地加载到我的 Tomcat 7 环境中。昨天当我关闭一天时，这工作得很好。什么都没有改变，但是当我今天早上开始时，这就是我所看到的。什么都没有改变——真的。我刚刚打开 Eclipse 开始工作和测试我的 Web 应用程序 - 找不到并返回 404。

什么会导致罐子无法加载？我在项目中没有错误并且已经清理了它。

有问题的 jar 位于：

C:\Users\me\Documents\Dev\Eclipse\J2EE_WDT\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\app.cloud.services\WEB-INF\lib

清理后的控制台输出：

Apr 25, 2013 9:38:31 AM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [/mydomain.com] has started
Apr 25, 2013 9:38:35 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: urn:com:sun:jersey:api:view is already defined
Apr 25, 2013 9:38:35 AM com.sun.jersey.api.core.PackagesResourceConfig init
INFO: Scanning for root resource and provider classes in the packages:
  com.mydomain.webservices
Apr 25, 2013 9:38:35 AM com.sun.jersey.api.core.ScanningResourceConfig logClasses
INFO: Root resource classes found:
  class com.mydomain.webservices.Encryption
  class com.mydomain.webservices.Codec
Apr 25, 2013 9:38:35 AM com.sun.jersey.api.core.ScanningResourceConfig init
INFO: No provider classes found.
Apr 25, 2013 9:38:35 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.12 02/15/2012 04:51 PM'
Apr 25, 2013 9:38:36 AM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [/mydomain.com] is completed
Apr 25, 2013 9:38:36 AM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [/cs.core.web] has started
Apr 25, 2013 9:38:36 AM java.util.jar.Attributes read
WARNING: Duplicate name in Manifest: Class-Path.
Ensure that the manifest does not have duplicate entries, and
that blank lines separate individual sections in both your
manifest and in the META-INF/MANIFEST.MF entry in the jar file.
Apr 25, 2013 9:38:36 AM java.util.jar.Attributes read
WARNING: Duplicate name in Manifest: Class-Path.
Ensure that the manifest does not have duplicate entries, and
that blank lines separate individual sections in both your
manifest and in the META-INF/MANIFEST.MF entry in the jar file.
Apr 25, 2013 9:38:36 AM java.util.jar.Attributes read
WARNING: Duplicate name in Manifest: Class-Path.
Ensure that the manifest does not have duplicate entries, and
that blank lines separate individual sections in both your
manifest and in the META-INF/MANIFEST.MF entry in the jar file.
Apr 25, 2013 9:38:36 AM java.util.jar.Attributes read
WARNING: Duplicate name in Manifest: Class-Path.
Ensure that the manifest does not have duplicate entries, and
that blank lines separate individual sections in both your
manifest and in the META-INF/MANIFEST.MF entry in the jar file.
Apr 25, 2013 9:38:36 AM java.util.jar.Attributes read
WARNING: Duplicate name in Manifest: Class-Path.
Ensure that the manifest does not have duplicate entries, and
that blank lines separate individual sections in both your
manifest and in the META-INF/MANIFEST.MF entry in the jar file.
Apr 25, 2013 9:38:40 AM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [/cs.core.web] is completed
Apr 25, 2013 9:38:40 AM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [/app.cloud.services] has started
Apr 25, 2013 9:38:41 AM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(C:\Users\me\Documents\Dev\Eclipse\J2EE_WDT\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\app.cloud.services\WEB-INF\lib\el-api.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/el/Expression.class
Apr 25, 2013 9:38:41 AM org.apache.catalina.loader.WebappClassLoader validateJarFile
INFO: validateJarFile(C:\Users\me\Documents\Dev\Eclipse\J2EE_WDT\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\app.cloud.services\WEB-INF\lib\servlet-api.jar) - jar not loaded. See Servlet Spec 2.3, section 9.7.2. Offending class: javax/servlet/Servlet.class
Apr 25, 2013 9:38:45 AM org.apache.catalina.startup.TaglibUriRule body
INFO: TLD skipped. URI: urn:com:sun:jersey:api:view is already defined
Apr 25, 2013 9:38:45 AM com.sun.jersey.api.core.PackagesResourceConfig init
INFO: Scanning for root resource and provider classes in the packages:
  com.app.api
Apr 25, 2013 9:38:45 AM com.sun.jersey.api.core.ScanningResourceConfig logClasses
INFO: Root resource classes found:
  class com.app.api.SyncAccount
  class com.app.api.Override
  class com.app.api.SyncSchedule
  class com.app.api.SyncDevice
  class com.app.api.Register_NOTUSED
  class com.app.api.Mock
  class com.app.api.Contact
  class com.app.api.WSInit
  class com.app.api.SyncMetrics
Apr 25, 2013 9:38:45 AM com.sun.jersey.api.core.ScanningResourceConfig init
INFO: No provider classes found.
Apr 25, 2013 9:38:45 AM com.sun.jersey.server.impl.application.WebApplicationImpl _initiate
INFO: Initiating Jersey application, version 'Jersey: 1.12 02/15/2012 04:51 PM'
Apr 25, 2013 9:38:45 AM org.apache.catalina.core.StandardContext reload
INFO: Reloading Context with name [/app.cloud.services] is completed

编辑

我想要做的是启动我的网络应用程序，由于 jar 未加载，目前无法找到该应用程序。它在物理上它应该在的地方 - 这昨天再次奏效，现在到今天早上却没有。

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1 回答 1

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servlet-api.jar 从 tomcat_home/lib 目录加载。我可以建议你清理 tomcat 服务器并重新启动它。要清理 tomcat，您需要执行“窗口 -> 显示视图 -> 其他 -> 服务器”，您将能够看到 tomcat 服务器。右键单击并点击“清理...”。希望这可以解决您的问题，因为它昨天工作正常，但今天突然无法正常工作，没有任何变化。

于 2013-04-25T14:50:00.433 回答