如何将Android上的图像上传到Google Cloud（Java）？

Question

我正在开发一个基于Android的应用程序，它可以与Google Cloud进行交互。我需要将图片上传到云端。我已经开发了PHP + Android的代码，但我不确定如何在Google Cloud（JAVA）中处理它。

的Android代码：

public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    if (resultCode == RESULT_OK) { 
     if (requestCode == SELECT_PICTURE) { 


      Uri selectedImageUri = data.getData(); 
      String selectedImagePath = getPath(selectedImageUri); 

      InputStream is; 
      BitmapFactory.decodeFile(data.getData().toString()); 
      Bitmap bitmapOrg = BitmapFactory.decodeFile(selectedImagePath); //BitmapFactory.decodeResource(getResources(),R.drawable.gallery); 
      ByteArrayOutputStream bao = new ByteArrayOutputStream(); 
      bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, bao); 
      byte [] ba = bao.toByteArray(); 
      String ba1 = Base64.encodeToString(ba, 1); 
      ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); 
      nameValuePairs.add(new BasicNameValuePair("image",ba1)); 
      try{ 
       HttpClient httpclient = new DefaultHttpClient(); 
       httpclient.getParams().setParameter(CoreProtocolPNames.USER_AGENT, "Custom user agent"); 
       HttpPost httppost = new 
       HttpPost("http://umair-p.appspot.com/imageupload"); 
       httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
       HttpResponse response = httpclient.execute(httppost); 
       HttpEntity entity = response.getEntity(); 
       is = entity.getContent(); 
       Toast.makeText(Main.this, is.toString(), Toast.LENGTH_LONG).show(); 
       //Toast.makeText(Main.this, "Picture Shared", Toast.LENGTH_LONG).show(); 
      } 
      catch(Exception e){ 
       Toast.makeText(Main.this, "Exception: " + e.toString(), Toast.LENGTH_LONG).show(); 
      } 

      //Toast.makeText(Main.this, data.getData().toString(), Toast.LENGTH_SHORT).show(); 
     } 
    } 
} 

PHP代码（即正常工作）：

<?php 
$base=$_REQUEST['image']; 
echo $base; 
// base64 encoded utf-8 string 
$binary=base64_decode($base); 
// binary, utf-8 bytes 
header('Content-Type: bitmap; charset=utf-8'); 
// print($binary); 
//$theFile = base64_decode($image_data); 
$file = fopen('test.jpg', 'wb'); 
fwrite($file, $binary); 
fclose($file); 
echo '<img src=test.jpg>'; 
?> 

上述解决方案工作正常，但我需要上传图像谷歌云。任何帮助？

Answer 1

您需要从AppEngine应用程序生成上传URL。

首先，执行HTTP GET来http://umair-p.appspot.com/imageupload

然后，在服务器上，呼叫blobstoreService.createUploadUrl（ “/ imageupload”）。返回在HTTP响应中生成的URL。

最后，Android应用程序从响应中读取URL并在HTTP POST请求中使用它来上传图像。