如何使用NanoHttpd响应发送文件名

Question

我已经使用NanoHttpd在本地网络上成功实现了文件传输.但是,我无法在NanoHttpd Response中发送文件名.收到的文件具有如下默认名称:localhost_8080.我尝试在响应标头中附加文件名Content-disposition,但我的文件传输失败了.我究竟做错了什么？这是我的实现:

private class WebServer extends NanoHTTPD {
    String MIME_TYPE;
    File file;

    public WebServer() {
        super(PORT);
    }

    @Override
    public Response serve(String uri, Method method,
            Map<String, String> header, Map<String, String> parameters,
            Map<String, String> files) {
        try {
            file=new File(fileToStream);
            fis = new FileInputStream(file);
            bis = new BufferedInputStream(fis);
            MIME_TYPE= URLConnection.guessContentTypeFromName(file.getName());
        } catch (IOException ioe) {
            Log.w("Httpd", ioe.toString());
        }
        NanoHTTPD.Response res=new NanoHTTPD.Response(Status.OK, MIME_TYPE, bis);
        res.addHeader("Content-Disposition: attachment; filename=", file.getName());
        return res;
    }
}

谢谢你的帮助!

Answer 1

您需要指定响应,MIME类型和要发送的字节流.之后,您只需添加一个带有文件文件名的标头,因为它是一个http方法.这是一个解决问题的示例代码

@Override
public Response serve(String uri, Method method,
    Map<String, String> header, Map<String, String> parameters,
    Map<String, String> files) {

    FileInputStream fis = null;
    try {
        fis = new FileInputStream(fileName);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }

    NanoHTTPD.Response res = new NanoHTTPD.Response(Response.Status.OK, "application/vnd.android.package-archive", fis);
    res.addHeader("Content-Disposition", "attachment; filename=\""+fileName+"\""); 
    return res;

}