Error 500: LinkageError while defining class: com.action.MyAction Could not be defined due to: com/action/MyAction (Unsupported major.minor version 49.0) This is often caused by having a class defined at multiple locations within the classloader hierarchy. Other potential causes include compiling against an older or newer version of the class that has an incompatible method signature. Dumping the current context classloader hierarchy: ==> indicates defining classloader ==>[0] com.ibm.ws.classloader.CompoundClassLoader@1077c51e Local ClassPath: D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\classes;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\lib\antlr.jar;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\lib\commons-beanutils.jar;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\lib\commons-digester.jar;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\lib\commons-fileupload.jar;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\lib\commons-logging.jar;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\lib\commons-validator.jar;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\lib\jakarta-oro.jar;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war\WEB-INF\lib\struts.jar;D:\IBMWebSphere\profiles\default\installedApps\OuYangNode01Cell\WebSphere_war.ear\WebSphere.war; Delegation Mode: PARENT_FIRST [1] com.ibm.ws.classloader.JarClassLoader@271779102 Local Classpath: Delegation mode: PARENT_FIRST [2] com.ibm.ws.classloader.ProtectionClassLoader@39cd451d [3] com.ibm.ws.bootstrap.ExtClassLoader@7937c51f [4] sun.misc.Launcher$AppClassLoader@7939051f [5] sun.misc.Launcher$ExtClassLoader@7945051f ---Original exception--- java.lang.UnsupportedClassVersionError: com/action/MyAction (Unsupported major.minor version 49.0) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java(Compiled Code)) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java(Compiled Code)) at com.ibm.ws.classloader.CompoundClassLoader._defineClass(CompoundClassLoader.java:576) at com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java(Compiled Code)) at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java(Compiled Code)) at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code)) at org.apache.struts.util.RequestUtils.applicationClass(RequestUtils.java:117) at org.apache.struts.util.RequestUtils.applicationInstance(RequestUtils.java:143) at org.apache.struts.action.RequestProcessor.processActionCreate(RequestProcessor.java:280) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:218) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:743) at javax.servlet.http.HttpServlet.service(HttpServlet.java:856) at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1212) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:629) at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:2841) at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:220) at com.ibm.ws.webcontainer.VirtualHost.handleRequest(VirtualHost.java:204) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1681) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:77) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:421) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:367) at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:94) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.requestComplete(WorkQueueManager.java:548) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.attemptIO(WorkQueueManager.java:601) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.workerRun(WorkQueueManager.java:934) at com.ibm.ws.tcp.channel.impl.WorkQueueManager$Worker.run(WorkQueueManager.java:1021) at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1332) --- end Original exception----


<html:link action="my">go</html:link>请求时报以上异常
action 只打印一句话
请人指教一下