java 前端通过浏览器下载服务器上的文件

最新推荐文章于 2025-03-11 14:01:25 发布

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最新推荐文章于 2025-03-11 14:01:25 发布

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文章标签： java浏览器下载文件

本文链接：https://blog.youkuaiyun.com/hu137137/article/details/101290183

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/**前端通过浏览器下载服务器上的文件
 * @param request
 * @param response
 * @param url 服务器文件地址（本地）
 * @return
 */
public Boolean downLoad(HttpServletRequest request, HttpServletResponse response,String url){
    Boolean flag = false;
    String fileName = url.substring(url.lastIndexOf(File.separator + 1), url.length());
    System.out.println("url:"+url);
    FileInputStream ips = null;
    ServletOutputStream out = null;
    try {
        File file = new File(url);
        ips = new FileInputStream(file);
        response.setContentType("multipart/form-data");
        response.setCharacterEncoding("UTF-8");
        response.addHeader("Content-Disposition","attachment:filename="+fileName);
        out = response.getOutputStream();
        int len = 0;
        byte[] buffer = new byte[1024 * 10];
        while ((len = ips.read(buffer)) != -1){
            out.write(buffer,0,len);
        }
        out.flush();
        ips.close();
        out.close();
        return true;
    }catch (Exception e){
        System.out.println(e.getMessage());
    }
    return flag;
}