我正在使用MyEclipse 9和Tomcat7.0。我已经获取了最新代码，并在Tomcat 7中进行了部署，并启动了服务器。我立即收到如下所述的错误日志。
INFO: The listener "org.apache.myfaces.webapp.StartupServletContextListener" is already configured for this context. The duplicate definition has been ignored.
Jan 10, 2014 5:53:40 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class com.aap.apweb.servlet.APServletContextListener
java.lang.ClassNotFoundException: com.aap.apweb.servlet.APServletContextListener
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:415)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:397)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4537)
at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5097)
at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5092)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Jan 10, 2014 5:53:40 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Error configuring application listener of class com.aap.apweb.servlet.APHTTPSessionListener
java.lang.ClassNotFoundException: com.aap.apweb.servlet.APHTTPSessionListener
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:415)
at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:397)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4537)
at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5097)
at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5092)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Jan 10, 2014 5:53:40 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Skipped installing application listeners due to previous error(s)
Jan 10, 2014 5:53:40 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error listenerStart
Jan 10, 2014 5:53:40 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [/apweb] startup failed due to previous errors
Jan 10, 2014 5:53:41 PM org.apache.catalina.loader.WebappClassLoader clearReferencesJdbc
SEVERE: The web application [/apweb] registered the JDBC driver [net.sourceforge.jtds.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
Jan 10, 2014 5:53:41 PM org.apache.coyote.AbstractProtocolHandler start
INFO: Starting ProtocolHandler ["http-apr-8080"]
Jan 10, 2014 5:53:41 PM org.apache.coyote.AbstractProtocolHandler start
INFO: Starting ProtocolHandler ["ajp-apr-8009"]
Jan 10, 2014 5:53:41 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 13243 ms
我认为必须设置jar路径。但是我找不到它。
最佳答案
com.aap.apweb.servlet.APHTTPSessionListener是您的类之一吗？我没有在Google上获得任何成功，所以我猜是这样。您需要确保已在构建路径中设置了所有依赖项，并相应地设置了部署策略。可以通过右键单击项目，选择“属性”，然后转到MyEclipse / Web页面并单击“部署”选项卡来调整项目的部署策略。在该选项卡上，您可以选择是否使用工作台设置（在这种情况下，大多数字段将显示为灰色）（只需取消选择“使用工作台默认设置”）。
请注意，最新版本的MyEclipse通过部署程序集为您提供了对部署的更明确的控制。 MyEclipse 9的许可证也适用于MyEclipse 2014，可以从www.myeclipseide.com网站下载。
关于java - 在MyEclipse中启动Tomcat 7服务器时发生ClassNotFoundException，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/21044502/