jsp中的错误信息，大家帮忙分析一下！！

显示全部楼层 · 2004-2-15 18:49:00

错误主要就是使用标签库的错误。
源码：

template test

tomcat报错如下：
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Failed to load or instantiate TagExtraInfo class: com.acme.tag.IterateTEI
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:94)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:404)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:319)
org.apache.jasper.compiler.TagLibraryInfoImpl.createTagInfo(TagLibraryInfoImpl.java:458)
org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:295)
org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:204)
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:460)
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:525)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1625)
org.apache.jasper.compiler.Parser.parse(Parser.java:173)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:247)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:149)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:135)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:243)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:437)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:555)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:543)
org.apache.jsp.do_005flogin_jsp._jspx_meth_sql_wasEmpty_0(do_005flogin_jsp.java:549)
org.apache.jsp.do_005flogin_jsp._jspService(do_005flogin_jsp.java:201)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

root cause
java.lang.ClassNotFoundException: com.acme.tag.IterateTEI
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1365)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1212)
org.apache.jasper.compiler.TagLibraryInfoImpl.createTagInfo(TagLibraryInfoImpl.java:455)
org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:295)
org.apache.jasper.compiler.TagLibraryInfoImpl.(TagLibraryInfoImpl.java:204)
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:460)
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:525)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1625)
org.apache.jasper.compiler.Parser.parse(Parser.java:173)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:247)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:149)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:135)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:243)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:437)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:555)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:543)
org.apache.jsp.do_005flogin_jsp._jspx_meth_sql_wasEmpty_0(do_005flogin_jsp.java:549)
org.apache.jsp.do_005flogin_jsp._jspService(do_005flogin_jsp.java:201)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

note The full stack trace of the root cause is available in the Tomcat logs.