Java 应用程序无法在GAE上运行
我在Java 应用程序无法在GAE上运行,java,google-app-engine,uncaught-exception,Java,Google App Engine,Uncaught Exception,我在GAE上创建了一个应用程序,当我在localhost上测试它时,它运行良好,当我在谷歌服务器上部署它时,它给了我错误 Uncaught exception from servlet java.lang.UnsupportedClassVersionError: com/xyz/testing/server/MyServlet : Unsupported major.minor version 51.0 at com.google.appengine.runtime.Request.p
GAE
上创建了一个应用程序,当我在localhost
上测试它时,它运行良好,当我在谷歌服务器上部署它时,它给了我错误
Uncaught exception from servlet
java.lang.UnsupportedClassVersionError: com/xyz/testing/server/MyServlet : Unsupported major.minor version 51.0
at com.google.appengine.runtime.Request.process-3cf09259cfc67552(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)
在应用程序中,它只是一个注册表单,通过
Ajax
post请求提交。当我点击按钮注册时,它给了我以下异常。虽然这在localhost
上运行良好,但我认为问题在于,您使用Java 7编译项目,而GAE使用Java 6。因此,您必须使用Java6构建/编译您的项目
有关Java环境,请参见