JasperRunManager cannot be resolved

1、错误描述

十一月 04, 2015 1:56:09 下午 org.apache.catalina.core.StandardWrapperValve invoke严重: Servlet.service() for servlet [jsp] in context with path [/Report] threw exception [Unable to compile class for JSP: An error occurred at line: 16 in the jsp file: /runReport.jspJasperRunManager cannot be resolved13:     Map parameters = new HashMap(); 14:     try 15:     {   //执行报表程序   16:     JasperRunManager.runReportToHtmlFile(reportFile.getPath(), parameters, conn);   17:     response.sendRedirect(ctxpath+"/myreport.html"); //此处的myreport是报表的名称 18:     19:     }   Stacktrace:] with root causeorg.apache.jasper.JasperException: Unable to compile class for JSP: An error occurred at line: 16 in the jsp file: /runReport.jspJasperRunManager cannot be resolved13:     Map parameters = new HashMap(); 14:     try 15:     {   //执行报表程序   16:     JasperRunManager.runReportToHtmlFile(reportFile.getPath(), parameters, conn);   17:     response.sendRedirect(ctxpath+"/myreport.html"); //此处的myreport是报表的名称 18:     19:     }   Stacktrace:at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102)at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:198)at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:450)at org.apache.jasper.compiler.Compiler.compile(Compiler.java:361)at org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)at org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:580)at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:356)at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668)at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1517)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1474)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:745)

2、错误原因

3、解决办法