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  • HttpServletResponse 下载功能的实现


    DiskFileItemFactory dfif = new DiskFileItemFactory();//创建硬盘文件项工厂

    ServletFileUpload sfu = new ServletFileUpload(dfif);//创建文件组选项

    sfu.setHeaderEncoding("utf-8");
    sfu.setFileSizeMax(30*1024*1024);//设置上传文件大小

    List items = null;
    try{
    items = sfu.parseRequest(req);
    }catch(FileUploadException e){
    e.printStackTrace();
    }
    Iterator it = items.iterator();
    int i =1;
    while(it.hasNext()){

    FileItem fileitem = (FileItem)it.next();

    ServletOutputStream outputStream = resp.getOutputStream();

    resp.setHeader("content-disposition","attachment;filename="+name);

    while((ss = value.read())!=-1){
    outputStream.write(ss);
    }

    outputStream.flush();
    outputStream.close();

    后记:

    如果name的命名是中文,需要转码:name = java.net.URLENconder.encode(name,"utf-8")

    方法二

    代理方式:resp.setContentType("application/x-msdownload");

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  • 原文地址:https://www.cnblogs.com/leonkobe/p/2932023.html
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