导出数据生成Excel后要能够弹出下载提示框

Question

jsp页面已写好了，进入action的请求downloadFile()，可以生成Excel，但没有弹出下载提示框的功能的代码....急啊！！！

Answer 1

查看代码    看看return 的时候是否出错！

Answer 2

在myeclipse中运行可以生成Excel，但将tomcat作为服务器启动后，不能下载到其他的电脑上，要有下载提示框才行

Answer 3

public class DownloadFile {
public  static HttpServletResponse download(String path, HttpServletResponse response) {
     try {
         // path是指欲下载的文件的路径。
         File file = new File(path);
         // 取得文件名。
         String filename = file.getName();
         // 以流的形式下载文件。
         InputStream fis = new BufferedInputStream(new FileInputStream(path));
         byte[] buffer = new byte[fis.available()];
         fis.read(buffer);
         fis.close();
         // 清空response
         response.reset();
         // 设置response的Header
         //response.setHeader("Content-disposition","attachment;filename="+"book.zip");  
         response.addHeader("Content-Disposition", "inline;filename=" + new String(filename.getBytes()));
         response.addHeader("Content-Length", "" + file.length());
         OutputStream toClient = new BufferedOutputStream(response.getOutputStream());          
         response.setContentType("application/OCTET-STREAM;charset=gb2312");
         toClient.write(buffer);
         toClient.flush();
         toClient.close();
     } catch (IOException ex) {
         ex.printStackTrace();
     }
     return response;
 }
}
调用方法：
public class EmployeeAction extends ActionSupport implements ServletRequestAware,ServletResponseAware{
ActionContext context=ActionContext.getContext();
HttpServletRequest request ;
HttpServletResponse response ;
public HttpServletResponse getDownloadFile(){
String str="/Excel/empInfo.xls";
String path = request.getSession().getServletContext().getRealPath(str);
return DownloadFiles.download(path, response);
}
@Override
public void setServletRequest(HttpServletRequest request) {
this.request=request;
}
@Override
public void setServletResponse(HttpServletResponse response) {
this.response=response;
}
}

Answer 4

报了这样的错：
严重: Servlet.service() for servlet default threw exception
java.lang.IllegalStateException
at org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:407)
at org.apache.struts2.dispatcher.Dispatcher.sendError(Dispatcher.java:819)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:519)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)

Answer 5

jsp页面已写好了，进入action的请求downloadFile()，可以生成Excel，但没有弹出下载提示框的功能的代码....急啊！！！ 

Answer 6

response.setContentType("application/OCTET-STREAM;charset=gb2312");
这块有点问题。response.setContentType("application/vnd.ms-excel;charset=gb2312");
试试

Answer 7

response.setHeader("Content-Disposition", "attachment;filename=" + file);我这样下载图片和excel都可以弹出