XSRFTokenUtility中的NPE - 谷歌移动后端启动器

I'm trying to setup the Geek Serendipity backend sample as demoed at Google IO (http://bradabrams.com/2013/05/google-io-2013-session-overview-from-nothing-to-nirvana-in-minutes-cloud-backend-for-your-android-application-building-geek-serendipity/)

我正试图在Google IO上设置Geek Serendipity后端示例（http://bradabrams.com/2013/05/google-io-2013-session-overview-from-nothing-to-nirvana-in-minutes -cloud-后端换你，Android的应用程序 - 建筑怪胎情缘/）

I'm following the instructions at https://github.com/GoogleCloudPlatform/solutions-mobile-backend-starter-java (I'm deploying from source code as I will need to later add some custom endpoints)

我按照https://github.com/GoogleCloudPlatform/solutions-mobile-backend-starter-java上的说明操作（我将从源代码部署，因为我需要稍后添加一些自定义端点）

However, after following the instructions and deploying to AppEngine, I can't access the homepage of the deployed app (configure.jsp) to UNLOCK the app for development calls. I'm getting the a NullPointer on XSRFTokenUtility.java.

但是，按照说明并部署到AppEngine后，我无法访问已部署应用程序（configure.jsp）的主页以解锁应用程序以进行开发调用。我在XSRFTokenUtility.java上获得了一个NullPointer。

Uncaught exception from servlet
java.lang.NullPointerException
        at com.google.cloud.backend.config.XSRFTokenUtility.buildTokenString(XSRFTokenUtility.java:136)
        at com.google.cloud.backend.config.XSRFTokenUtility.getToken(XSRFTokenUtility.java:64)
        at com.google.cloud.backend.config.ConfigurationServlet.getToken(ConfigurationServlet.java:208)
        at org.apache.jsp.admin.configure_jsp._jspService(configure_jsp.java:56)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        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$CachedChain.doFilter(ServletHandler.java:1166)
        at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:125)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:35)
        at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
        at

Other details:

其他详情：

App ID: mobile-starter-yaraju-1

App ID：mobile-starter-yaraju-1

Eclipse version: 4.2 (Juno)

Eclipse版本：4.2（Juno）

AppEngine SDK version: 1.8.5

AppEngine SDK版本：1.8.5

Google Plugin for Eclipse: 3.4.1.v201309130745-rel-r42

适用于Eclipse的Google插件：3.4.1.v201309130745-rel-r42

OS: Windows 8 64-bit

操作系统：Windows 8 64位

2 个解决方案

#1

Finally solved this problem. The source code is fine, and I had a malformed web.xml getting extracted from the zip.

终于解决了这个问题。源代码很好，我从zip中提取了一个格式错误的web.xml。

If this happens to you, clear your Windows Temp cache, and extract the backend zip again.

如果您遇到这种情况，请清除Windows Temp缓存，然后再次提取后端zip。

#2

My solution: Don't deploy from source code.

我的解决方案：不要从源代码部署。

Follow this page: http://developers.google.com/cloud/samples/mbs/deploy_backend

请按以下页面访问：http：//developers.google.com/cloud/samples/mbs/deploy_backend

And the option to deploy a "Mobile Sample App" is finally back. Deploy straight to the cloud, and the backend runs fine with the sample Android client app

部署“移动样本应用程序”的选项终于回来了。直接部署到云端，使用示例Android客户端应用程序可以很好地运行后端

#1