如何將多部分表單數據從android發佈到web api？

Question

我想張貼精確顯示在圖片中。從郵遞員的工作good.I不知道如何在android中做到這一點。 TIA

入住郵遞員對我的請求，圖像：

Answer 1

有很多職位有關計算器多，試試這個

public static String uploadMultipartFile(String root, String token, 
         String username, String sourceFileUri, 
         String fileStyle) 
{ 
    HttpURLConnection connection = null; 
    DataOutputStream outputStream = null; 
    String pathToOurFile = sourceFileUri; 
    String lineEnd = "\r\n"; 
    String twoHyphens = "--"; 
    String boundary = "*****"; 
    StringBuffer response = new StringBuffer(); 
    try 
    { 
     FileInputStream fileInputStream = new FileInputStream(new File(pathToOurFile)); 
     URL url = new URL(root); 
     connection = (HttpURLConnection) url.openConnection(); 

     if (token != null) 
     { 
      connection.setRequestProperty("Authorization", "Basic " + token); 
     } 
     if (username != null) 
     { 
      connection.setRequestProperty("Username", username); 
     } 
     if (fileStyle != null) 
     { 
      connection.setRequestProperty("file-type", fileStyle); 
     } 

     String fileExtension = FilenameUtils.getExtension(sourceFileUri); 
     String mime = Utils.getFileMIME(fileExtension); 

     Log.d("uploadMultipartFile","fileExtension:"+fileExtension+",mime:"+mime); 

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

     connection.setRequestMethod("POST"); 
     connection.setRequestProperty("Connection", "Keep-Alive"); 
     connection.setRequestProperty("Cache-Control", "no-cache"); 
     connection.setRequestProperty("User-Agent", "CodeJava Agent"); 
     connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary); 

     outputStream = new DataOutputStream(connection.getOutputStream()); 
     outputStream.writeBytes(twoHyphens + boundary + lineEnd); 
     outputStream.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" 
       + pathToOurFile + "\"" + lineEnd); 
     outputStream.writeBytes("Content-Type: "+ mime + lineEnd); 

     outputStream.writeBytes(lineEnd); 

     byte[]bytes = IOUtils.toByteArray(fileInputStream); 
     outputStream.write(bytes); 

     outputStream.writeBytes(lineEnd); 
     outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); 

     int serverResponseCode = connection.getResponseCode(); 
     String serverResponseMessage = connection.getResponseMessage(); 
     Log.i(HttpUtil.class.getSimpleName(), String.valueOf(serverResponseCode)); 
     Log.i(HttpUtil.class.getSimpleName(), serverResponseMessage); 

     fileInputStream.close(); 
     outputStream.flush(); 
     outputStream.close(); 

     BufferedReader br=null; 
     if(connection.getResponseCode()>=200 && connection.getResponseCode()<300) 
     { 
      br = new BufferedReader(new InputStreamReader((connection.getInputStream()))); 

     } 
     else if(connection.getResponseCode()>=400) 
     { 
      br = new BufferedReader(new InputStreamReader((connection.getErrorStream()))); 
     } 
     String inputLine; 
     while ((inputLine = br.readLine()) != null) { 
      response.append(inputLine); 
     } 
     System.out.println("result from server:"+response.toString()); 
    } 
    catch (Exception ex) 
    { 
     ex.printStackTrace(); 
    } 
    return response.toString(); 
} 

Answer 2

您需要將您的JPG文件轉換爲位圖對象，然後u需要將其壓縮成一個字節數組發送多請求。

public class FileUpload extends Activity { 
     Bitmap bm; 

     /** Called when the activity is first created. */ 
     @Override 
     public void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      setContentView(R.layout.main); 
      try { 
       // bm = BitmapFactory.decodeResource(getResources(), 
       // R.drawable.forest); 
       bm = BitmapFactory.decodeFile("/sdcard/DCIM/yourImage.jpg"); 
       executeMultipartPost(); 
      } catch (Exception e) { 
       Log.e(e.getClass().getName(), e.getMessage()); 
      } 
     } 

     public void executeMultipartPost() throws Exception { 
      try { 
       ByteArrayOutputStream bos = new ByteArrayOutputStream(); 
       bm.compress(CompressFormat.JPEG, 75, bos); 
       byte[] data = bos.toByteArray(); 
       HttpClient httpClient = new DefaultHttpClient(); 
       HttpPost postRequest = new HttpPost(
         "http://10.0.2.2/cfc/iphoneWebservice.cfc?returnformat=json&method=testUpload"); 
       ByteArrayBody bab = new ByteArrayBody(data, "yourImage.jpg"); 
       // File file= new File("/mnt/sdcard/yourImage.jpg"); 
       // FileBody bin = new FileBody(file); 
       MultipartEntity reqEntity = new MultipartEntity(
         HttpMultipartMode.BROWSER_COMPATIBLE); 
       reqEntity.addPart("uploaded", bab); 
       reqEntity.addPart("photoCaption", new StringBody("sfsdfsdf")); 
       postRequest.setEntity(reqEntity); 
       HttpResponse response = httpClient.execute(postRequest); 
       BufferedReader reader = new BufferedReader(new InputStreamReader(
         response.getEntity().getContent(), "UTF-8")); 
       String sResponse; 
       StringBuilder s = new StringBuilder(); 

       while ((sResponse = reader.readLine()) != null) { 
        s = s.append(sResponse); 
       } 
       System.out.println("Response: " + s); 
      } catch (Exception e) { 
       // handle exception here 
       Log.e(e.getClass().getName(), e.getMessage()); 
      } 
     } 
    } 

Answer 3

添加到您的gradle這個建立

compile('org.apache.httpcomponents:httpmime:4.3.6') { 
    exclude module: 'httpclient' 
} 

在下面

提到WebService類一樣編寫代碼

public MyPojo post(String name, String gender, String celbID) { 

MultipartEntityBuilder multipartEntity = MultipartEntityBuilder.create(); 

     multipartEntity.addPart("Name", new StringBody(name, ContentType.TEXT_PLAIN)); 
     multipartEntity.addPart("gender", new StringBody(gender, ContentType.TEXT_PLAIN)); 
     multipartEntity.addPart("Celb_id", new StringBody(celbID, ContentType.TEXT_PLAIN)); 

     httppost.setEntity(multipartEntity.build()); 
     HttpResponse httpResponse = httpclient.execute(httppost); 
     HttpEntity httpEntity = httpResponse.getEntity(); 
     aJsonResponse = EntityUtils.toString(httpEntity); 

一旦你對此有疑問，請ping我...