Post 图片通过 android 发送到服务器并通过 PHP 代码得到响应

Question

我正在使用 HTTPUrlConnection 将图像发送到服务器。如何编写 php 代码来接收图像并在没有 json 的情况下发送响应。您能否解释一下 php 将如何接收没有 json 结构的文件数据。

 public void uploadFile(String sourceFileUri, String upLoadServerUri) {
    URL url=null;
    HttpURLConnection connection = null;

    Bitmap bm = BitmapFactory.decodeFile(sourceFileUri);
    ByteArrayOutputStream bao = new ByteArrayOutputStream();
    bm.compress(Bitmap.CompressFormat.JPEG, 10, bao);

    try {
            //Create connection
            url = new URL(upLoadServerUri);
            connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            connection.setRequestProperty("Content-Language", "en-US");

            connection.setUseCaches(false);
            connection.setDoInput(true);
            connection.setDoOutput(true);

            //Send request
            DataOutputStream writer = new DataOutputStream(connection.getOutputStream());

            writer.writeBytes(bao.toString());
            writer.flush();
            writer.close();

            //Get Response
            InputStream is = connection.getInputStream();
            BufferedReader rd = new BufferedReader(new InputStreamReader(is));
            String line;
            StringBuffer response = new StringBuffer();
            while ((line = rd.readLine()) != null) {
                response.append(line);
                response.append('\r');
            }
            rd.close();


        } catch (Exception e) {

            e.printStackTrace();
            return null;

        } finally {

            if (connection != null) {
                connection.disconnect();
            }
        }
}

Answer 1

这是我正在运行的代码。 //android

String sourceFileUri = Environment.getExternalStorageDirectory()+"filename.jpeg";

            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()) {

                return null;

            }

            String fullpath = "";

            fullpath = sourceFile + "";
            Log.e("fullpath", fullpath);
            try {
                // open a URL connection to the Servlet
                FileInputStream fileInputStream = new FileInputStream(sourceFileUri);
                Log.e("fileinputstream", "" + fileInputStream);
                URL url = new URL("abc.com/upload.php");
                StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
                        .permitAll().build();
                StrictMode.setThreadPolicy(policy);
                // Open a HTTP connection to the URL
                conn = (HttpURLConnection) url.openConnection();
                // int lenghtOfFile = conn.getContentLength();
                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("bill", fileName);

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

                dos.writeBytes(twoHyphens + boundary + lineEnd);
                dos.writeBytes("Content-Disposition: form-data; name=\"bill\";filename=\""
                        + fileName + "\"" + lineEnd);

                dos.writeBytes(lineEnd);

                // create a buffer of maximum size
                bytesAvailable = fileInputStream.available();
                Log.e("" + bytesAvailable, "BytesAvailable");
                bufferSize = Math.min(bytesAvailable, maxBufferSize);
                buffer = new byte[bufferSize];
                Log.e("" + buffer, "Buffer");
                // read file and write it into form...
                bytesRead = fileInputStream.read(buffer, 0, bufferSize);
                // long total = 0;
                Log.e("" + bytesRead, "BytesRead");
                while (bytesRead > 0) {
                    // total += count;
                    // publishProgress("" + (int) ((total * 100) /
                    // lenghtOfFile));

                    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);

                // Responses from the server (code and message)

           String serverResponseMessage = conn.getResponseMessage();  
                Log.e("Server Response code", "" + serverResponseCode);
                if (serverResponseMessage == "sucess") {


                     System.out.println("file uploaded");
                }

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

            } catch (Exception e) {
                Log.d("error", e.getMessage());
            }

//php

<?php
    if (is_uploaded_file($_FILES['bill']['tmp_name'])) {
     $name="filename";   

     $tmp_name = $_FILES['bill']['tmp_name'];
     $pic_name = $_FILES['bill']['name'];
     $ext = explode('.',$pic_name);
     $extension = $ext[1];
       if($extension=='png'){
           unlink( $name.'.jpg'); 
            }

      if($extension=='jpg'){
           unlink( $name.'.png'); 
             }

      move_uploaded_file($tmp_name,  $name.'.'.$extension );
            echo "sucess";
            }
        else{
         echo "File not uploaded successfully.";
            }        
     ?>