关于下载时的write方法写的东西不同，而是否弹出下载对话框的问题

Question

一段下载的代码，却有个让我百思不得其解的问题：<%
if (request.getParameter("start")==null){
    return;
}
try {
//session.removeAttribute("cvs_out");
com.nec.jp.supportal.search.SearchFormBean bean=new com.nec.jp.supportal.search.SearchFormBean();
bean.setKeyword(request.getParameter("keyword"));
bean.setOrder(request.getParameter("order"));
bean.setSort(request.getParameter("sort"));
com.nec.jp.supportal.search.SearchAction action=new com.nec.jp.supportal.search.SearchAction();
java.util.List list = action.getCSVData(bean);javax.servlet.ServletOutputStream  sout=response.getOutputStream();
response.setHeader("Content-disposition","attachment;filename="+"検索結果.csv");
response.setContentType("application/x-csv"); for (int i=0;i<list.size();i++){
byte[] bCSVRow = ((String)list.get(i)).getBytes("MS932");
sout.write(bCSVRow);／／这样写可以弹出下载对话框
         //sout.write("hello".getBytes());//这样写不能弹出下载对话框
    }
throw new Exception("12345");
} catch(Exception ex) {
response.sendRedirect("http://www.163.com");
}
%>不能弹出对话框的时候，response.sendRedirect("http://www.163.com");好用，能弹出的时候，response.sendRedirect("http://www.163.com");这句话不起作用，我始终不明白这是为什么，很奇怪呀．难道是java的bug吗

Answer 1

楼上啊,你肯定没有做过下载,下载页面不允许有javascript代码的.否则,这么简单我也不会问了.

Answer 2

<%
//session.removeAttribute("cvs_out");
//com.nec.jp.supportal.search.SearchFormBean bean=new com.nec.jp.supportal.search.SearchFormBean();
//bean.setKeyword(request.getParameter("keyword"));
//bean.setOrder(request.getParameter("order"));
//bean.setSort(request.getParameter("sort"));
//com.nec.jp.supportal.search.SearchAction action=new com.nec.jp.supportal.search.SearchAction();
//java.util.List list = action.getCSVData(bean);javax.servlet.ServletOutputStream  sout=response.getOutputStream();
response.setHeader("Content-disposition","attachment;filename="+"1.txt");
response.setContentType("application/octet-stream");
byte[] s = "hello".getBytes();
for(int i=0;i<10;i++){
sout.write(s);//这样写不能弹出下载对话框
}
sout.close();       
         
//for (int i=0;i<list.size();i++){
//byte[] bCSVRow = ((String)list.get(i)).getBytes("MS932");
//sout.write(bCSVRow);//这样写可以弹出下载对话框
     
// }%>
这样写是可以的.

Answer 3

sorry是这样
<%
//session.removeAttribute("cvs_out");
//com.nec.jp.supportal.search.SearchFormBean bean=new com.nec.jp.supportal.search.SearchFormBean();
//bean.setKeyword(request.getParameter("keyword"));
//bean.setOrder(request.getParameter("order"));
//bean.setSort(request.getParameter("sort"));
//com.nec.jp.supportal.search.SearchAction action=new com.nec.jp.supportal.search.SearchAction();
//java.util.List list = action.getCSVData(bean);javax.servlet.ServletOutputStream  sout=response.getOutputStream();
response.setHeader("Content-disposition","attachment;filename="+"検索結果.csv");
response.setContentType("application/x-csv");
byte[] s = "hello".getBytes();
for(int i=0;i<10;i++){
sout.write(s);//这样写不能弹出下载对话框
}
sout.close();       
         
//for (int i=0;i<list.size();i++){
//byte[] bCSVRow = ((String)list.get(i)).getBytes("MS932");
//sout.write(bCSVRow);//这样写可以弹出下载对话框
     
// }%>