Java 应用程序引擎部署错误500_Java_Google App Engine

Java 应用程序引擎部署错误500

java google-app-engine

Java 应用程序引擎部署错误500,java,google-app-engine,Java,Google App Engine,我有个问题，我不知道该怎么办。因此，我使用Java（jspservlet）和appengineapi创建了一个小型web应用程序它在区域设置中工作，但当我部署它时，它会给我一个错误： Error: Server Error The server encountered an error and could not complete your request. If the problem persists, please report your problem and mention t

我有个问题，我不知道该怎么办。因此，我使用Java（jspservlet）和appengineapi创建了一个小型web应用程序它在区域设置中工作，但当我部署它时，它会给我一个错误：

Error: Server Error

The server encountered an error and could not complete your request.

If the problem persists, please report your problem and mention this error message and the query that caused it.

并且，在管理页面的日志中

java.lang.UnsupportedClassVersionError: persiste/EmployeServlet : Unsupported major.minor version 51.0
    at com.google.appengine.runtime.Request.process-50f1863c6e652dbb(Request.java)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
    at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    at org.mortbay.util.Loader.loadClass(Loader.java:91)
    at org.mortbay.util.Loader.loadClass(Loader.java:71)
    at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)
    at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:242)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
    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 java.lang.Thread.run(Thread.java:679)

当我更改java（从java 7更改为java 6）并执行应用程序时，出现以下错误：

7 aoāt 2012 13:02:52 com.google.apphosting.utils.jetty.JettyLogger警告注意：失败的Testv2:java.lang.UnsupportedClassVersionError:test/Testv2Servlet:Unsupported major.minor Version51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)

at java.lang.ClassLoader.defineClass(ClassLoader.java:615)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

at org.mortbay.util.Loader.loadClass(Loader.java:91)

at org.mortbay.util.Loader.loadClass(Loader.java:71)


at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)

at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:242)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)

at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)

at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)

at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)

at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at

7 aoāt 2012 13:02:52 com.google.apphosting.utils.jetty.JettyLogger警告注意：com.google.appengine.tools.development失败。DevAppEngineWebAppContext@1522de2{/，D:\Etudes\Stage Dirham Express\workspace\testv2\war}:java.lang.UnsupportedClassVersionError:test/Testv2Servlet:Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)

at java.lang.ClassLoader.defineClass(ClassLoader.java:615)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

at org.mortbay.util.Loader.loadClass(Loader.java:91)

at org.mortbay.util.Loader.loadClass(Loader.java:71)


at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)

at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:242)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)

at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)

at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)

at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)

at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at

7 aoāt 2012 13:02:52 com.google.apphosting.utils.jetty.JettyLogger警告注意：JettyContainerService失败$ApiProxyHandler@15f4a7f：java.lang.UnsupportedClassVersionError:test/Testv2Servlet:不支持的主版本。次版本51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)

at java.lang.ClassLoader.defineClass(ClassLoader.java:615)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

at org.mortbay.util.Loader.loadClass(Loader.java:91)

at org.mortbay.util.Loader.loadClass(Loader.java:71)


at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)

at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:242)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)

at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)

at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)

at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)

at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at

7 aoāt 2012 13:02:52 com.google.apphosting.utils.jetty.JettyLogger警告注意:例外 java.lang.UnsupportedClassVersionError:test/Testv2Servlet:Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)

at java.lang.ClassLoader.defineClass(ClassLoader.java:615)

at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)

at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)

at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at com.google.appengine.tools.development.IsolatedAppClassLoader.loadClass(IsolatedAppClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

at org.mortbay.util.Loader.loadClass(Loader.java:91)

at org.mortbay.util.Loader.loadClass(Loader.java:71)


at org.mortbay.jetty.servlet.Holder.doStart(Holder.java:73)

at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:242)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)

at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)

at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)

at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)

at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)

at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)

at

com.google.appengine.tools.development.JettyContainerService.reloadWebApp（JettyContainerService.java:315）

7 aoāt 2012 13:02:52 com.google.apphosting.utils.jetty.JettyLogger警告

注意：com.google.appengine.tools.development.JettyContainerService$ScannerListener@113e9fd在“D:\Etudes\Stage Dirham Express\workspace\testv2\war\WEB-INF\appengine WEB.xml”上失败。在一个版本的Java SDK下编译JAR并尝试在其他版本上运行时，会发生此错误。appengine生产环境支持java6（akav1.6），因此在编译代码时，您还应该在本地机器上使用java6

如果您的计算机上安装了多个Java版本，请确保在编译代码时使用了正确的版本

如果您使用的是Eclipse，请确保它也配置为使用Java6。更改版本后，还应“清理”项目以删除过时的类。

版本号为51.0。应用程序引擎不支持点