android - HttpURLConnection 发送带参数的图像、音频和视频文件可能(String 或 Json String)Android

Question

我正在分享 solution 来发送 image 、audio 或 video 文件，参数使用HttpURLConnection。参数可以是(纯字符串或 JSON)。

(Android 客户端到 PHP 后端)

场景: 必须上传媒体文件(音频、视频和带参数的图像)。

媒体文件将存储在服务器文件夹中，并将参数存储到数据库中。

我遇到了一个问题，图片上传成功，而参数丢失。

找到可能的解决方案

选择 HttpURLConnection 而不是 Httpclient 作为 recommend here

您可能想知道，哪个客户端最好？

Apache HTTP 客户端在 Eclair 和 Froyo 上的错误更少。这是这些版本的最佳选择。

对于 Gingerbread 和更好的，HttpURLConnection 是最佳选择。其简单的 API 和小尺寸使其非常适合 Android。透明压缩和响应缓存可减少网络使用、提高速度并节省电池。新应用程序应该使用 HttpURLConnection；这是我们将在未来花费精力的地方。

安卓代码:

public int uploadFile(final String sourceFileUri) {

    String fileName = sourceFileUri;

    HttpURLConnection conn = null;
    DataOutputStream dos = null;
    String lineEnd = "\r\n";
    String twoHyphens = "--";
    String boundary = "*****";
    int bytesRead, bytesAvailable, bufferSize;
    byte[] buffer;
    int maxBufferSize = 1 * 1024 * 1024;
    File sourceFile = new File(sourceFileUri);

    if (!sourceFile.isFile()) {

        dialog.dismiss();

        Log.e("uploadFile", "Source File not exist :" + filepath);

        runOnUiThread(new Runnable() {
            public void run() {
                messageText.setText("Source File not exist :" + filepath);
            }
        });

        return 0;

    } else {
        try {
            FileInputStream fileInputStream = new FileInputStream(sourceFile);
            URL url = new URL(upLoadServerUri);
            conn = (HttpURLConnection) url.openConnection();
            conn.setDoInput(true); // Allow Inputs
            conn.setDoOutput(true); // Allow Outputs
            conn.setUseCaches(false); // Don't use a Cached Copy
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Connection", "Keep-Alive");
        //  conn.setRequestProperty("ENCTYPE", "multipart/form-data");
            conn.setRequestProperty("Content-Type","multipart/form-data;boundary=" + boundary);
            conn.setRequestProperty("uploaded_file", fileName);


            dos = new DataOutputStream(conn.getOutputStream());


            dos.writeBytes(twoHyphens + boundary + lineEnd);

//Adding Parameter name

            String name="amir";
            dos.writeBytes("Content-Disposition: form-data; name=\"name\"" + lineEnd); 
            //dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
            //dos.writeBytes("Content-Length: " + name.length() + lineEnd);
            dos.writeBytes(lineEnd);
            dos.writeBytes(name); // mobile_no is String variable
            dos.writeBytes(lineEnd);

            dos.writeBytes(twoHyphens + boundary + lineEnd);

//Adding Parameter phone
            String phone="9956565656";
            dos.writeBytes("Content-Disposition: form-data; name=\"phone\"" + lineEnd); 
            //dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
            //dos.writeBytes("Content-Length: " + name.length() + lineEnd);
            dos.writeBytes(lineEnd);
            dos.writeBytes(phone); // mobile_no is String variable
            dos.writeBytes(lineEnd);


            //Json_Encoder encode=new Json_Encoder();
            //call to encode method and assigning response data to variable 'data'
            //String data=encode.encod_to_json();
            //response of encoded data
            //System.out.println(data);


                //Adding Parameter filepath

            dos.writeBytes(twoHyphens + boundary + lineEnd);
            String filepath="http://192.168.1.110/echo/uploads"+fileName;

            dos.writeBytes("Content-Disposition: form-data; name=\"filepath\"" + lineEnd); 
            //dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
            //dos.writeBytes("Content-Length: " + name.length() + lineEnd);
            dos.writeBytes(lineEnd);
            dos.writeBytes(filepath); // mobile_no is String variable
            dos.writeBytes(lineEnd);


//Adding Parameter media file(audio,video and image)

            dos.writeBytes(twoHyphens + boundary + lineEnd);

            dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""+ fileName + "\"" + lineEnd);
            dos.writeBytes(lineEnd);
            // create a buffer of maximum size
            bytesAvailable = fileInputStream.available();
            bufferSize = Math.min(bytesAvailable, maxBufferSize);
            buffer = new byte[bufferSize];
            // read file and write it into form...
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);

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

            // send multipart form data necesssary after file data...
            dos.writeBytes(lineEnd);
            dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);


            serverResponseCode = conn.getResponseCode();
            String serverResponseMessage = conn.getResponseMessage();



            Log.i("uploadFile", "HTTP Response is : "+ serverResponseMessage + ": " + serverResponseCode);

            if (serverResponseCode == 200) {

                runOnUiThread(new Runnable() {
                    public void run() {
                         msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
                                + "c:/wamp/www/echo/uploads";
                        messageText.setText(msg);
                        Toast.makeText(MainActivity.this,
                                "File Upload Complete.", Toast.LENGTH_SHORT)
                                .show();
                    }
                });
            }

            // close the streams //
            fileInputStream.close();
            dos.flush();
            dos.close();

        } catch (MalformedURLException ex) {

            dialog.dismiss();
            ex.printStackTrace();

            runOnUiThread(new Runnable() {
                public void run() {
                    messageText
                            .setText("MalformedURLException Exception : check script url.");
                    Toast.makeText(MainActivity.this,
                            "MalformedURLException", Toast.LENGTH_SHORT)
                            .show();
                }
            });

            Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
        } catch (final Exception e) {

            dialog.dismiss();
            e.printStackTrace();

            runOnUiThread(new Runnable() {
                public void run() {
                    messageText.setText("Got Exception : "+e.toString());
                    Toast.makeText(MainActivity.this,
                            "Got Exception : see logcat ",
                            Toast.LENGTH_SHORT).show();
                }
            });
            Log.e("Upload file to server Exception",
                    "Exception : " + e.getMessage(), e);
        }
        dialog.dismiss();
        return serverResponseCode;
    }
}

php代码:

$file_path = "uploads/";

//receive parameters

  $name=$_POST['name'];
  $phone=$_POST['phone'];
  $filepath=$_POST['filepath'];


   //receive media files(image , audio and video)

   $file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
   if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path)) 
      {
      echo "Success";
      }

希望这会有所帮助。

有什么问题可以问我。

Answer 1

您可以使用 Retrofit用于 API 调用。对 Android 的最低支持是 2.3。请查看详细信息。