我在 GAE Java 中开发了一个应用程序，但仅在已部署版本上出现错误，我无法在本地环境中创建条件。
当我调用我制作的 servlet 时，该过程结束而没有任何错误（我记录了很多所有过程以解决此问题）。servlet 打印响应输出，然后代码完成。
但是在这个过程之后我得到了以下错误，所以客户端收到的真正响应是一个经典的错误 500 页面。
java.lang.RuntimeException: java.io.NotSerializableException: java.util.logging.Logger
at com.google.apphosting.runtime.SessionManagerUtil.serialize(SessionManagerUtil.java:31)
at com.google.apphosting.runtime.jetty.DatastoreSessionStore.createEntityForSession(DatastoreSessionStore.java:72)
at com.google.apphosting.runtime.jetty.DatastoreSessionStore.saveSession(DatastoreSessionStore.java:94)
at com.google.apphosting.runtime.jetty.SessionManager$AppEngineSession.save(SessionManager.java:156)
at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:41)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.JdbcMySqlConnectionCleanupFilter.doFilter(JdbcMySqlConnectionCleanupFilter.java:57)
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 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.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:266)
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$RequestHandler.headerComplete(HttpConnection.java:923)
at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:76)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:146)
at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:439)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:480)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:487)
at com.google.tracing.TraceContext.runInContext(TraceContext.java:774)
at com.google.tracing.TraceContext$DoInTraceContext.runInContext(TraceContext.java:751)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:342)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:334)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:484)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251)
at java.lang.Thread.run(Thread.java:679)
Caused by: java.io.NotSerializableException: java.util.logging.Logger
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1197)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1545)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1510)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1433)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1191)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:363)
at java.util.HashMap.writeObject(HashMap.java:1018)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:962)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1497)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1433)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1191)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:363)
at com.google.apphosting.runtime.SessionManagerUtil.serialize(SessionManagerUtil.java:28)
... 32 more
我已经在此页面中读到这是一个常见错误，因为 Logger 不可序列化，因此我将项目中的所有 Logger 声明为
final static transient Logger = Logger.getLogger(MyClass.class.getName());
但仍然没有解决方案......我整天都在试图解决这个问题（事实上，这只是部署版本的问题并没有帮助......）
我还需要澄清两周前部署的版本运行良好，没有任何问题。今天，相同的版本开始出现解释的错误。我想知道原因是否可能是 GAE 1.8.0 的新发布版本
感谢您的支持问候