jxl导出EXCEL保存文件路径的问题，2000下没有问题，xp下面就存在问题

Question

type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception javax.servlet.ServletException: Servlet execution threw an exception
com.jrosion.common.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:72)
root cause java.lang.NoSuchMethodError: com.jrosion.business.service.IAtEmployeeWagesService.getErrorMsg()Ljava/lang/String;
com.jrosion.struts.action.ExportAtEmployeeWagesAction.execute(ExportAtEmployeeWagesAction.java:66)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
com.jrosion.common.util.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:72)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.15 logs.
--------------------------------------------------------------------------------Apache Tomcat/5.5.15

Answer 1

root causejava.lang.NoSuchMethodError: com.jrosion.business.service.IAtEmployeeWagesService.getErrorMsg()Ljava/lang/String; 怎么会是NoSuchMethod？？？

Answer 2

String filepath = "../webapps/amis/exportFiles/" + filename; 把路径写成绝对路径吧或者使用System.getProperty("user.dir")获取应用路径String filepath=System.getProperty("user.dir")+"/exportFiles/"+filename;建议先把System.getProperty("user.dir")看看你的路径是什么，然后加上相应的路径。

Answer 3

com.jrosion.business.service.IAtEmployeeWagesService.getErrorMsg()找不到这个方法,或者方法参数不对, 和 JXL没关系

Answer 4

各位兄弟们，我写成下面的样子就可以了，xp下面也可以 
String filename = request.getSession().getId() + Math.random() 
+ ".xls"; 
String filepath = getServlet().getServletContext().getRealPath( 
"/exportFiles/" + filename);