请问关于在MyEclipse上配置WebSphere 6的JDK环境问题

windkz 2007-01-18 01:26:17

刚刚学习WebSphere Application Server的使用.
使用Eclipse 3.2+MyEclipse 5.1。配置起来很是麻烦。
因为WebSphere Application Server 6.0不支持JDK1.5，在服务器上设置了IBM自己的JDK，又辛苦去下了一个SUN JDK 1.4.2。
自己的J2EE项目里设置的是SUN的JDK 1.4.2。启动ECLIPSE也是用的SUN的JDK 1.4.2。
结果发问自己的SERVLET还是会报49.0错
请问有谁知道是怎么回事吗？非常感谢。
Error 500: java.lang.LinkageError: LinkageError while defining class: aa.Test Could not be defined due to: aa/Test (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@757ebac1 Local ClassPath: C:\Program Files\IBM\WebSphere\AppServer\profiles\MyEclipse\installedApps\rakeyNode01Cell\Test.ear\TestWeb.war\WEB-INF\classes;C:\Program Files\IBM\WebSphere\AppServer\profiles\MyEclipse\installedApps\rakeyNode01Cell\Test.ear\TestWeb.war; Delegation Mode: PARENT_FIRST [1] com.ibm.ws.classloader.JarClassLoader@1976662721 Local Classpath: Delegation mode: PARENT_FIRST [2] com.ibm.ws.classloader.ProtectionClassLoader@435abac1 [3] com.ibm.ws.bootstrap.ExtClassLoader@3e11fac3 [4] sun.misc.Launcher$AppClassLoader@3e037ac3 [5] sun.misc.Launcher$ExtClassLoader@3e077ac3 ---Original exception--- java.lang.UnsupportedClassVersionError: aa/Test (Unsupported major.minor version 49.0) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:147) at com.ibm.ws.classloader.CompoundClassLoader._defineClass(CompoundClassLoader.java:576) at com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java:527) at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:414) at java.lang.ClassLoader.loadClass(ClassLoader.java:494) at java.beans.Beans.instantiate(Beans.java:202) at java.beans.Beans.instantiate(Beans.java:63) at com.ibm.ws.webcontainer.servlet.ServletWrapper$3.run(ServletWrapper.java:1384) at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118) at com.ibm.ws.webcontainer.servlet.ServletWrapper.loadServlet(ServletWrapper.java:1379) at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:442) at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:2841) at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:220) at com.ibm.ws.webcontainer.VirtualHost.handleRequest(VirtualHost.java:204) at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1681) at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:77) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:421) at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:367) at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:94) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.requestComplete(WorkQueueManager.java:548) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.attemptIO(WorkQueueManager.java:601) at com.ibm.ws.tcp.channel.impl.WorkQueueManager.workerRun(WorkQueueManager.java:934) at com.ibm.ws.tcp.channel.impl.WorkQueueManager$Worker.run(WorkQueueManager.java:1021) at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1332) --- end Original exception----

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