JAVA实现文件下载,浏览器端失去数据没反应

JAVA实现文件下载,浏览器端得到数据没反应
代码如下


public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

//得到要下载的文件名称
String filename=request.getParameter("filename");
//文件存放的路径，合成绝对路径
String dir = this.getServletContext().getRealPath("/");
String filepath=dir+"bksh"+"\\"+filename;
//得到这个文件的对象
File f=new File(filepath);
//response的编码方式为.doc下载
response.setContentType("application/msword");
//写明要下载的文件的大小
        response.setContentLength((int)file.length());
        //文件名
response.setHeader("Content-Disposition", "attachment; filename=" + filename);

//独处文件的IO流
FileInputStream fis=new FileInputStream(file);
        BufferedInputStream buff=new BufferedInputStream(fis);

        byte [] b=new byte[1024];//相当读文件的缓存
        long k=0;//该值用于计算当前实际下载了多少字节
        
        //response对象得到输出流
        OutputStream myout=response.getOutputStream();
        
        //开始循环下载

        while(k&lt;file.length()){

            int j=buff.read(b,0,1024);
            k+=j;

            //将b中的数据写到客户端的内存
            myout.write(b,0,j);

        }

        //将写入到客户端的内存的数据,刷新到磁盘
        myout.flush();

firbug显示服务器已经返回了数据，但是貌似浏览器不认为它需要下载这些数据。。。
求高人解答，在线等
[解决办法]


response.setCharacterEncoding("utf-8");
response.setContentType("multipart/form-data");
String downloadFileName = "";
if (request.getHeader("User-Agent").toUpperCase().indexOf("MSIE") &gt; 0) {
downloadFileName = URLEncoder.encode(fileRealName, "UTF-8");
} else {
downloadFileName = new String(fileRealName.getBytes("UTF-8"), "ISO8859-1");
}

response.setHeader("Content-disposition", "attachment; filename=" + downloadFileName);

[解决办法]
似乎少了这一句:
response.setContentType("multipart/form-data");
[解决办法]
response.setCharacterEncoding("utf-8");
response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
response.setContentLength(workbook.getBytes().length);
response.setHeader("Content-Disposition", "attachment;filename=" + playdate + ".xls");
[解决办法]

引用:

response.setCharacterEncoding("utf-8");
response.setContentType((mimetype != null) ? mimetype : "application/octet-stream");
response.setContentLength(workbook.getBytes().length);
response.setHeader("Content-Disposition", "attachment;filename=" + playdate + ".xls");

唯一的明白人是这个哥们，要下载你得告诉浏览器，而不是发了数据就完事了。

response.setHeader("Content-type", "application-download");

JAVA实现文件下载,浏览器端失去数据没

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