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标题: IBM JDK一个诡异问题:java类名无效 [打印本页]

作者: qingqing3721    时间: 2011-9-6 05:22     标题: IBM JDK一个诡异问题:java类名无效

这几天碰到一个诡异的问题,在IBM JDK上二位数组中使用表达式时,出现http 500的错误。500是个外部错误,更web container有关,拿了客户的日志文件,发现异常如下,
  2009-7-23 上午05时01分47秒 CDT [weblogic.servlet.internal.WebAppServletContext@1aec462 - appName: 'test', name: 'test', context-path: '/test', spec-version: '2.5'] Root cause of ServletException.
  javax.servlet.ServletException: [HTTP:101249][weblogic.servlet.internal.WebAppServletContext@1aec462 - appName: 'test', name: 'test', context-path: '/test', spec-version: '2.5']: Servlet class jsp_servlet.__test for servlet /test.jsp could not be loaded because the requested class was not found in the classpath .
  java.lang.ClassFormatError: Illegal class name "[L[Ljava/lang/String;;" in class file jsp_servlet/__test.
  ......
  从具体的异常堆栈来看,应该是class加载时出现了问题,说是类名有问题,但同一context root下类名格式相同的其他page则可以拜访。假设去掉二位数组中的表达式,.则可以处置这个问题。下面我们通过一个最简单的例子来复现这个问题。
  1:IBM JDK version
  E:\workspace\eclipse322\src1030\binjava -version
  java version "1.6.0"
  Java(TM) SE Runtime Environment (build pwi3260sr2-20080818_01(SR2))
  IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 Windows XP x86-32 jvmwi3260-20080816
  _22093 (JIT enabled, AOT enabled)
  J9VM - 20080816_022093_lHdSMr
  JIT - r9_20080721_1330ifx2
  GC - 20080724_AA)
  JCL - 20080808_02
  2: __MatrixTest.java
 




 1packagetest.classload;   2   3publicclass__MatrixTest{   4publicvoidinitialize(){   5StringsResourcesPath="";   6StringsCustomerScale="123";   7StringsCustomerType="123";   8Stringteststr=((!sCustomerScale.equals("")sCustomerScale.substring(0,2).equals("02"))?"false":"true");   9StringsButtons[][]={   10{((!sCustomerScale.equals("")sCustomerScale.substring(0,2).equals("02"))?"false":"true"),   11"","Button","新增","新增一条记录","newRecord()",sResourcesPath},   12//Ifaboveexpressionisreplacedwith'teststr'likebelow,thisissuecouldbesolved.   13//{teststr,"","Button","新增","新增一条记录","newRecord()",sResourcesPath}   14};   15}   16}




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