默认“appengine 连接的 Android 项目”500 错误

【问题标题】：default "appengine connected Android project" 500 error默认“appengine 连接的 Android 项目”500 错误
【发布时间】：2015-05-25 11:49:18
【问题描述】：

我正在努力弄清楚如何让默认的“appengine 连接的 Android 项目”工作。 我正在使用带有 google 插件的 eclipse Luna (4.4.2)（使用 google app engine SDK 1.9.18）。 我通过输入相关范围（项目名称、包名称、API 密钥和项目编号）创建了默认项目。 然后我通过将 xxxxx-AppEngine 作为 Web 应用程序运行来启动本地 Web 服务器。 然后，一旦我尝试访问：http://localhost:8888/，我的控制台中就会出现以下错误：

2015 年 2 月 22 日

11:55:33 AM com.google.apphosting.utils.jetty.JettyLogger warn
WARNING: Error for /_ah/spi/BackendService.getApiConfigs
java.lang.NoClassDefFoundError: Could not initialize class com.google.appengine.repackaged.com.google.common.reflect.Types$NativeTypeVariableEquals
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver$TypeTable.resolveInternal(TypeResolver.java:296)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver$TypeTable.resolve(TypeResolver.java:249)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver.resolveType(TypeResolver.java:160)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver.resolveTypes(TypeResolver.java:176)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver.resolveParameterizedType(TypeResolver.java:200)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver.resolveType(TypeResolver.java:162)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeToken.resolveType(TypeToken.java:245)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeToken.resolveSupertype(TypeToken.java:256)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeToken.getGenericInterfaces(TypeToken.java:333)
    at com.google.api.server.spi.config.Serializers.getSerializerClasses(Serializers.java:143)
    at com.google.api.server.spi.config.annotationreader.ApiAnnotationIntrospector.findSerializerInstance(ApiAnnotationIntrospector.java:215)
    at com.google.api.server.spi.config.annotationreader.ApiAnnotationIntrospector.findSerializer(ApiAnnotationIntrospector.java:99)
    at com.google.api.server.spi.config.annotationreader.ApiAnnotationIntrospector.findSerializer(ApiAnnotationIntrospector.java:44)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.AnnotationIntrospector$Pair.findSerializer(AnnotationIntrospector.java:1146)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.BasicSerializerFactory.findSerializerFromAnnotation(BasicSerializerFactory.java:362)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:252)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider._createUntypedSerializer(StdSerializerProvider.java:782)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider._createAndCacheUntypedSerializer(StdSerializerProvider.java:735)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider.findValueSerializer(StdSerializerProvider.java:344)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider.findTypedValueSerializer(StdSerializerProvider.java:420)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider._serializeValue(StdSerializerProvider.java:601)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider.serializeValue(StdSerializerProvider.java:256)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ObjectWriter._configAndWriteValue(ObjectWriter.java:456)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ObjectWriter.writeValueAsString(ObjectWriter.java:393)
    at com.google.api.server.spi.response.ServletResponseResultWriter.writeValueAsString(ServletResponseResultWriter.java:183)
    at com.google.api.server.spi.response.ServletResponseResultWriter.writeError(ServletResponseResultWriter.java:83)
    at com.google.api.server.spi.SystemService.invokeServiceMethod(SystemService.java:387)
    at com.google.api.server.spi.SystemServiceServlet.execute(SystemServiceServlet.java:160)
    at com.google.api.server.spi.SystemServiceServlet.doPost(SystemServiceServlet.java:118)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
    at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:127)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
    at org.mortbay.jetty.servlet.ServletHandler$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:98)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
    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)

מרץ 22, 2015 11:55:33 AM com.google.apphosting.utils.jetty.JettyLogger warn
WARNING: /_ah/api/discovery/v1/apis/deviceinfoendpoint/v1/rest: java.io.IOException: Failed to retrieve API configs with status: 500
מרץ 22, 2015 11:55:33 AM com.google.apphosting.utils.jetty.JettyLogger warn
WARNING: Error for /_ah/spi/BackendService.getApiConfigs
java.lang.NoClassDefFoundError: Could not initialize class com.google.appengine.repackaged.com.google.common.reflect.Types$NativeTypeVariableEquals
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver$TypeTable.resolveInternal(TypeResolver.java:296)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver$TypeTable.resolve(TypeResolver.java:249)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver.resolveType(TypeResolver.java:160)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver.resolveTypes(TypeResolver.java:176)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver.resolveParameterizedType(TypeResolver.java:200)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeResolver.resolveType(TypeResolver.java:162)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeToken.resolveType(TypeToken.java:245)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeToken.resolveSupertype(TypeToken.java:256)
    at com.google.appengine.repackaged.com.google.common.reflect.TypeToken.getGenericInterfaces(TypeToken.java:333)
    at com.google.api.server.spi.config.Serializers.getSerializerClasses(Serializers.java:143)
    at com.google.api.server.spi.config.annotationreader.ApiAnnotationIntrospector.findSerializerInstance(ApiAnnotationIntrospector.java:215)
    at com.google.api.server.spi.config.annotationreader.ApiAnnotationIntrospector.findSerializer(ApiAnnotationIntrospector.java:99)
    at com.google.api.server.spi.config.annotationreader.ApiAnnotationIntrospector.findSerializer(ApiAnnotationIntrospector.java:44)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.AnnotationIntrospector$Pair.findSerializer(AnnotationIntrospector.java:1146)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.BasicSerializerFactory.findSerializerFromAnnotation(BasicSerializerFactory.java:362)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:252)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider._createUntypedSerializer(StdSerializerProvider.java:782)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider._createAndCacheUntypedSerializer(StdSerializerProvider.java:735)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider.findValueSerializer(StdSerializerProvider.java:344)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider.findTypedValueSerializer(StdSerializerProvider.java:420)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider._serializeValue(StdSerializerProvider.java:601)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ser.StdSerializerProvider.serializeValue(StdSerializerProvider.java:256)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ObjectWriter._configAndWriteValue(ObjectWriter.java:456)
    at com.google.appengine.repackaged.org.codehaus.jackson.map.ObjectWriter.writeValueAsString(ObjectWriter.java:393)
    at com.google.api.server.spi.response.ServletResponseResultWriter.writeValueAsString(ServletResponseResultWriter.java:183)
    at com.google.api.server.spi.response.ServletResponseResultWriter.writeError(ServletResponseResultWriter.java:83)
    at com.google.api.server.spi.SystemService.invokeServiceMethod(SystemService.java:387)
    at com.google.api.server.spi.SystemServiceServlet.execute(SystemServiceServlet.java:160)
    at com.google.api.server.spi.SystemServiceServlet.doPost(SystemServiceServlet.java:118)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
    at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:127)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:63)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
    at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
    at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
    at org.mortbay.jetty.servlet.ServletHandler$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:98)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:491)
    at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    at org.mortbay.jetty.Server.handle(Server.java:326)
    at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
    at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
    at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
    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)

מרץ 22, 2015 11:55:33 AM com.google.apphosting.utils.jetty.JettyLogger warn
WARNING: /_ah/api/discovery/v1/apis/messageEndpoint/v1/rest: java.io.IOException: Failed to retrieve API configs with status: 500

此外，当我运行 android 客户端并推送“REGISTER”时，我得到同样的 500 错误。

我该如何解决这个问题？

【问题讨论】：

  • 我刚刚更新到 gae 的 sdk 版本 1.9.18，现在我遇到了同样的问题。你解决了吗？
  • 从我这里更新。我为此提出了一个问题。请注意，我发现问题底部列出了一个（错误的）解决方法。 code.google.com/p/googleappengine/issues/detail?id=11834
  • 更新 #2：我找到了解决方案！请参阅下面的my answer。

标签： android google-app-engine google-cloud-endpoints google-cloud-messaging google-plugin-eclipse


【解决方案1】：

我今天更新到 GAE 的 SDK 版本 1.9.18 时遇到了同样的问题。最后我想出了解决方案：更新java。在我这样做之后，一切又顺利进行了！

我猜端点现在可能需要 Java 版本 1.7.0_51-b13 或更高版本，从给我们带来麻烦的 Guava 类的源代码中的this comment 来看。

作为参考，今天可用的 Java 7 版本是 1.7.0_76。

【讨论】：

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