google-app-engine - 由于 HashMap$Entry ClassNotFound 错误，Grails 应用程序无法在 GoogleAppEngine 中运行

Question

我正在尝试将我的 Grails 项目移植到 GAE，现在它支持 Cloud SQL。我没有使用 Grails App Engine 插件，因为它似乎不支持 Cloud SQL(毕竟它是相当新的)。我能够设法让我的 Grails 项目在 Google Java 开发服务器下的本地主机上运行，​​并且一切正常。但是在我将应用程序上传到 Google Appspot 之后，应用程序无法初始化，引用 ClassNotFound for java.util.HashMap$Entry。我的直觉是，groovy 增强的 Hashmap 类使用了 App Engine 不允许的一些功能，因此阻止了它的加载。但我是一个 groovy 新手，所以真的不知道从哪里开始挖掘 Groovy。

堆栈跟踪:

Failed startup of context com.google.apphosting.utils.jetty.RuntimeAppEngineWebAppContext@92af24{/,/base/data/home/apps/fluentifyme/1.357352126538464031}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pluginManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.SecurityException: Unable to get members for class groovy.util.ConfigObject
    at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:202)
    at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:171)
    at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:123)
    at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:422)
    at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
    at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
    at com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
    at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
    at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
    at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
    at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
    at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.SecurityException: Unable to get members for class groovy.util.ConfigObject
    at java.security.AccessController.doPrivileged(AccessController.java:34)
    at org.codehaus.groovy.util.LazyReference.getLocked(LazyReference.java:46)
    at org.codehaus.groovy.util.LazyReference.get(LazyReference.java:33)
    at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:449)
    at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:455)
    at com.google.tracing.TraceContext.runInContext(TraceContext.java:695)
    at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:333)
    at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:325)
    at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:453)
    ... 1 more
Caused by: java.lang.reflect.InvocationTargetException
    ... 10 more
Caused by: java.lang.NoClassDefFoundError: [Ljava/util/HashMap$Entry;
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2444)
    at java.lang.Class.getDeclaredMethods(Class.java:1808)
    ... 10 more
Caused by: java.lang.ClassNotFoundException: java.util.HashMap$Entry
    ... 10 more

Answer 1

您似乎遇到了 this reported bug与 ConfigSlurper 和 GAE 的安全限制相关。正如错误所建议的那样，您可以切换到使用 JsonSlurper 来解决此问题。