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在爲Spring MVC添加代碼後，我收到了這些錯誤。這是一個在Intellij IDEA上運行Google App Engine的maven項目。在我開始使用Spring MVC框架並添加Spring-servlet的.xml文件之前，一切運行良好。任何人都可以幫助我弄清楚這個錯誤的含義以及如何解決它？提前致謝。GAE上的Spring MVC：500內部服務器錯誤（Intellij）
bad runtime process port ['']
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:268)
at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:284)
at com.google.appengine.tools.development.AutomaticInstanceHolder.startUp(AutomaticInstanceHolder.java:26)
at com.google.appengine.tools.development.AbstractModule.startup(AbstractModule.java:87)
at com.google.appengine.tools.development.Modules.startup(Modules.java:105)
at com.google.appengine.tools.development.devappserver2.DevAppServer2Impl.doStart(DevAppServer2Impl.java:250)
at ...
Feb 10, 2017 9:26:25 PM com.google.appengine.tools.development.devappserver2.RemoteApiDelegate log
SEVERE: [1486761985829000] javax.servlet.ServletContext log: unavailable
javax.servlet.UnavailableException: org.springframework.web.servlet.DispatcherServlet
at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:79)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:242)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
...
Feb 10, 2017 9:26:25 PM com.google.apphosting.utils.jetty.JettyLogger warn
WARNING: failed spring-web: java.lang.NullPointerException
Feb 10, 2017 9:26:25 PM com.google.apphosting.utils.jetty.JettyLogger warn
WARNING: Failed startup of context c[email protected]fdefd3f{/,D:\CSE308Project\teambuildingexercise\todolist\target\todolist-1.0-SNAPSHOT}
java.lang.NullPointerException
at java.lang.Class.isAssignableFrom(Native Method)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:256)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
...
Feb 10, 2017 9:26:25 PM com.google.apphosting.utils.jetty.JettyLogger info
INFO: Started [email protected]:54107
Feb 10, 2017 9:26:25 PM com.google.appengine.tools.development.AbstractModule startup
INFO: Module instance default is running at http://localhost:54107/
Feb 10, 2017 9:26:25 PM com.google.appengine.tools.development.AbstractModule startup
INFO: The admin console is running at http://localhost:54107/_ah/admin
Feb 10, 2017 4:26:25 PM com.google.appengine.tools.development.devappserver2.DevAppServer2Impl doStart
INFO: Dev App Server is now running
如果需要我的項目的部分，請讓我知道，我會發布更多。 （已經在jdk1.7上運行，仍然出現同樣的錯誤。）