各位大虾，走过路过不要错过，烦请发表一下高见，谢谢！！！

[lilylucy]

我们用JSP和JAVA编写了一个项目，编译完成后，运行出现了以下错误，convert.java是我们所使用的一个公共类，请问这是什么问题，我们该从哪方面解决？


500 Internal Server Error
OracleJSP:

JSP 错误:
请求 URI:/rlgl/index.jsp


异常:
java.lang.UnsupportedClassVersionError: rlgl/convert (Unsupported major.minor version 48.0)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:493)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111)
at com.evermind.naming.ContextClassLoader.defineClass(ContextClassLoader.java:993)
at com.evermind.naming.ContextClassLoader.findClass(ContextClassLoader.java:252)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at oracle.jsp.parse.JspUtils.loadClassJDK(JspUtils.java:219)
at oracle.jsp.parse.JspUtils.loadClass(JspUtils.java:209)
at oracle.jsp.parse.JspBeanInfo.loadBean(JspBeanInfo.java:216)
at oracle.jsp.parse.OpenJspTagHandler.defineBeans(OpenJspTagHandler.java:298)
at oracle.jsp.parse.OpenJspTagHandler.defineBeans(OpenJspTagHandler.java:258)
at oracle.jsp.parse.OpenJspTagHandler.validateTagAttributes(OpenJspTagHandler.java:221)
at oracle.jsp.parse.JspParseTag.parse(JspParseTag.java:672)
at oracle.jsp.parse.OpenJspTagHandler.parse(OpenJspTagHandler.java:467)
at oracle.jsp.parse.JspParseTag.parseNextTag(JspParseTag.java:548)
at oracle.jsp.parse.JspParseTagFile.parse(JspParseTagFile.java:160)
at oracle.jsp.parse.OracleJsp2Java.transform(OracleJsp2Java.java:40)
at oracle.jsp.runtimev2.JspPageCompiler.attemptCompilePage(JspPageCompiler.java:295)
at oracle.jsp.runtimev2.JspPageCompiler.compilePage(JspPageCompiler.java:181)
at oracle.jsp.runtimev2.JspPageInfo.compileAndLoad(JspPageInfo.java:338)
at oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:481)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:255)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:407)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:330)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:59)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:283)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:523)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:269)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:735)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:151)
at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:64)

[lilylucy]

各位帮忙啦，急＠＠!!!

[kaibinsj]

比较麻烦啊，是不是用jdk1.4方法写的class放在1。3的下面了？？？

[lmyabc]

有可能

[seamg]

看错误原因,就是版本的问题

[yaray]

java.lang.UnsupportedClassVersionError: rlgl/convert (Unsupported major.minor version 48.0)