Unable to compile class for JSP

严重: Servlet.service() for servlet jsp threwexception

org.apache.jasper.JasperException: Unable tocompile class for JSP:

 

An error occurred at line: 50 in the jsp file:/admin/adminWareHourse.jsp

Duplicate local variable wh

47: <%

48:                List list = (List) request.getAttribute("list");

49:                for (int i = 0; i < list.size(); i++) {

50:                    WareHourse wh = (WareHourse) list.get(i);

51:                    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

52:                    String date = sdf.format(wh.getDate());

53:             %>

 

 

Stacktrace:

    atorg.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)

    atorg.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)

    atorg.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)

    atorg.apache.jasper.compiler.Compiler.compile(Compiler.java:317)

    atorg.apache.jasper.compiler.Compiler.compile(Compiler.java:295)

    atorg.apache.jasper.compiler.Compiler.compile(Compiler.java:282)

    atorg.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586)

    atorg.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)

    atorg.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)

    atorg.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)

    atjavax.servlet.http.HttpServlet.service(HttpServlet.java:717)

    atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

    atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

    atorg.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)

    atorg.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)

    atorg.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)

    atorg.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)

    atzhao.ai.nan.WareHourseServlet.select(WareHourseServlet.java:165)

    atzhao.ai.nan.WareHourseServlet.doPost(WareHourseServlet.java:53)

    atzhao.ai.nan.WareHourseServlet.doGet(WareHourseServlet.java:27)

    atjavax.servlet.http.HttpServlet.service(HttpServlet.java:617)

    atjavax.servlet.http.HttpServlet.service(HttpServlet.java:717)

    atorg.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

    atorg.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

    atorg.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

    atorg.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

    atorg.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)

    atorg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

    atorg.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

    atorg.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)

    atorg.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)

    atorg.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)

    atorg.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)

    atjava.lang.Thread.run(Thread.java:619)

 

出现这个错误是因为我把WareHourse这个类导入了两次,怎么经常犯些小错误啊