在Google应用程序引擎上部署jsf2.1应用程序的教程中出现错误

Question

我按照本教程使用jsf创建了一个应用程序，并将其部署到google应用程序引擎上，但即使我按照教程中的所有步骤进行操作

我遇到了这个错误:

    18 avr. 2013 01:01:10 com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
INFO: Successfully processed C:UsersuserDesktopeclispe_workspacetest_googlewarWEB-INF/appengine-web.xml
18 avr. 2013 01:01:10 com.google.apphosting.utils.config.AbstractConfigXmlReader readConfigXml
INFO: Successfully processed C:UsersuserDesktopeclispe_workspacetest_googlewarWEB-INF/web.xml
18 avr. 2013 01:01:10 com.google.appengine.tools.development.SystemPropertiesManager setSystemProperties
INFO: Overwriting system property key 'java.util.logging.config.file', value 'C:UsersuserDownloadsCompressedeclipse-jee-juno-SR2-win32eclipsepluginscom.google.appengine.eclipse.sdkbundle_1.7.7.1appengine-java-sdk-1.7.7.1configsdklogging.properties' with value 'WEB-INF/logging.properties' from 'C:UsersuserDesktopeclispe_workspacetest_googlewarWEB-INFappengine-web.xml'
18 avr. 2013 01:01:10 com.google.apphosting.utils.jetty.JettyLogger info
INFO: Logging to JettyLogger(null) via com.google.apphosting.utils.jetty.JettyLogger
18 avr. 2013 01:01:11 com.google.apphosting.utils.jetty.JettyLogger info
INFO: jetty-6.1.x
18 avr. 2013 01:01:11 com.google.apphosting.utils.jetty.JettyLogger warn
ATTENTION: failed com.google.appengine.tools.development.DevAppEngineWebAppContext@14ab51b{/,C:UsersuserDesktopeclispe_workspacetest_googlewar}: java.lang.UnsupportedClassVersionError: com/sun/faces/config/WebConfiguration : Unsupported major.minor version 51.0
18 avr. 2013 01:01:11 com.google.apphosting.utils.jetty.JettyLogger warn
ATTENTION: failed JettyContainerService$ApiProxyHandler@e8606c: java.lang.UnsupportedClassVersionError: com/sun/faces/config/WebConfiguration : Unsupported major.minor version 51.0
18 avr. 2013 01:01:11 com.google.apphosting.utils.jetty.JettyLogger warn
ATTENTION: Error starting handlers
java.lang.UnsupportedClassVersionError: com/sun/faces/config/WebConfiguration : Unsupported major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
    at java.lang.

你知道吗

谢谢

Answer 1

java.lang。UnsupportedClassVersionError发生的原因是编译时JDK较高，运行时JDK较低。您无法使用JVM字节码target = 1.7部署Java代码，请尝试target = 1.6