Question

当我在本地主机Google App Engine应用程序中将日志记录级别更改为FINE时，我开始在跟踪堆栈中看到这些：

Apr 17, 2013 4:54:20 PM com.google.appengine.tools.development.DevAppServerServersFilter getCurrentServerInstance
FINE: Exception getting server instance
com.google.appengine.api.labs.servers.ServersException: No valid instance id for this instance.
    at com.google.appengine.api.labs.servers.ServersServiceImpl.getCurrentInstanceId(ServersServiceImpl.java:75)
    at com.google.appengine.tools.development.DevAppServerServersFilter.getCurrentServerInstance(DevAppServerServersFilter.java:210)
    at com.google.appengine.tools.development.DevAppServerServersFilter.isServerLoadBalancingServerRequest(DevAppServerServersFilter.java:185)
    at com.google.appengine.tools.development.DevAppServerServersFilter.getRequestType(DevAppServerServersFilter.java:174)
    at com.google.appengine.tools.development.DevAppServerServersFilter.doFilter(DevAppServerServersFilter.java:112)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
    at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
    at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
    at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
    at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:421)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
    at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

任何想法是什么以及如何解决它？

Answer 1

这是开发服务器中的一个已知问题：
https://code.google.com/p/googleappengine/issues/detail?id=10412

已经知道了一段时间，所以我不确定他们是否会修复它。

Answer 2

我认为当您将日志记录设置为FINE时，您应该会看到一些虚假的日志消息。我只为你的代码设置日志记录级别为FINE，其余部分保留默认级别。

获取服务器实例的异常：此实例没有有效的实例ID

2 个答案: