Question

我已经从here复制了以下代码，我已经替换的一件事是使用Map而不是分割，如下面的注释行所示，我的代码就在它之后开始。

这个代码一直都很完美，除了有时它会失败的一个设备，代码似乎被困在这个块里面，我没有得到任何异常，它只是卡在那里。

while (iter.hasNext()) {
....
}

更新我没有对手机进行物理访问，因此我为每一行打印了一个日志，甚至是异常，我看到代码卡在上面提到的循环中，并且还注意到http参数固定为4

我把一个Log放进去，我看到它到达了那个区域并完成了所有的params然后没有离开它，我在这里做什么？

    public ResponseObject multipartRequest(String urlTo, String post, Map httpPara, String filepath, String filefield) throws ParseException, IOException {
        HttpURLConnection connection = null;
        DataOutputStream outputStream = null;
        InputStream inputStream = null;
        int ResponseCode; 

        String twoHyphens = "--";
        String boundary =  "*****"+Long.toString(System.currentTimeMillis())+"*****";
        String lineEnd = "\r\n";

        String result = "";

        int bytesRead, bytesAvailable, bufferSize;
        byte[] buffer;
        int maxBufferSize = 1*1024*1024;

        String[] q = filepath.split("/");
        int idx = q.length - 1;

        try { 
                File file = new File(filepath);
                FileInputStream fileInputStream = new FileInputStream(file);
                URL url = new URL(urlTo);
                connection = (HttpURLConnection) url.openConnection();
                connection.setDoInput(true);
                connection.setDoOutput(true);
                connection.setUseCaches(false);

                connection.setRequestMethod("POST");
                connection.setRequestProperty("Connection", "Keep-Alive");
                connection.setRequestProperty("User-Agent", "Android Multipart HTTP Client 1.0");
                connection.setRequestProperty("Content-Type", "multipart/form-data; boundary="+boundary);
                Log.i(Commons.TAG, "filepath " + getMimeType(filepath) );

                outputStream = new DataOutputStream(connection.getOutputStream());
                outputStream.writeBytes(twoHyphens + boundary + lineEnd);
                outputStream.writeBytes("Content-Disposition: form-data; name=\"" + filefield + "\"; filename=\"" + q[idx] +"\"" + lineEnd);
               // outputStream.writeBytes("Content-Type: video/mp4" + lineEnd);
                outputStream.writeBytes("Content-Type: " + getMimeType(filepath) + lineEnd);

                outputStream.writeBytes("Content-Transfer-Encoding: binary" + lineEnd);
                outputStream.writeBytes(lineEnd);

                bytesAvailable = fileInputStream.available();
                bufferSize = Math.min(bytesAvailable, maxBufferSize);
                buffer = new byte[bufferSize];

                bytesRead = fileInputStream.read(buffer, 0, bufferSize);
                while(bytesRead > 0) {
                        outputStream.write(buffer, 0, bufferSize);
                        bytesAvailable = fileInputStream.available();
                        bufferSize = Math.min(bytesAvailable, maxBufferSize);
                        bytesRead = fileInputStream.read(buffer, 0, bufferSize);

                }
                outputStream.writeBytes(lineEnd);

                // Upload POST Data
//                String[] posts = post.split("&");
//                int max = posts.length;
//                for(int i=0; i<max;i++) {
//                        outputStream.writeBytes(twoHyphens + boundary + lineEnd);
//                        String[] kv = posts[i].split("=");
//                        outputStream.writeBytes("Content-Disposition: form-data; name=\"" + kv[0] + "\"" + lineEnd);
//                        outputStream.writeBytes("Content-Type: text/plain"+lineEnd);
//                        outputStream.writeBytes(lineEnd);
//                        outputStream.writeBytes(kv[1]);
//                        outputStream.writeBytes(lineEnd);
//                }
//                
                Iterator iter = httpPara.entrySet().iterator();

                while (iter.hasNext()) {
                    Map.Entry para = (Map.Entry) iter.next();
                     outputStream.writeBytes(twoHyphens + boundary + lineEnd);
                     outputStream.writeBytes("Content-Disposition: form-data; name=\"" + para.getKey().toString() + "\"" + lineEnd);
                     outputStream.writeBytes("Content-Type: text/plain"+lineEnd);
                     outputStream.writeBytes(lineEnd);
                     outputStream.writeBytes(para.getValue().toString());
                     outputStream.writeBytes(lineEnd);
                }
                outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
                outputStream.flush();
                outputStream.close();

                ResponseCode = connection.getResponseCode(); 
                inputStream = connection.getInputStream();
                result = this.convertStreamToString(inputStream);

                fileInputStream.close();
                inputStream.close();


                return new ResponseObject(ResponseCode, result);
        } catch(Exception e) {
                Log.e("MultipartRequest","Multipart Form Upload Error");

                e.printStackTrace();

                return null;
        }
}

使用HttpURLConnection上传文件

0 个答案: