在android中将图像上传到服务器？答案

【问题标题】：Upload images to server in android?在android中将图像上传到服务器？
【发布时间】：2014-04-19 16:41:00
【问题描述】：

在我的 android 应用程序中，我通过 http post 将图像上传到服务器（C#）并成功上传到服务器。

听到的是图片上传的代码：

public static String uploadImagePost(String url, String imagePath) throws Exception  {

        HttpClient  httpClient      =   new DefaultHttpClient();
        HttpContext localContext    =   new BasicHttpContext();
        HttpPost    httpPost        =   new HttpPost(url);
        // add header 
        httpPost.addHeader("FileName",      "android"+System.currentTimeMillis()+".jpg");
        httpPost.setHeader("User-Agent",    "android_client");
        httpPost.addHeader("accept",        "application/json");

        MultipartEntityBuilder builder = MultipartEntityBuilder.create();        
        /* example for setting a HttpMultipartMode */
        builder.setMode(HttpMultipartMode.RFC6532);
        /* example for adding an image part */
        builder.addPart("image/jpeg", new FileBody(new File (imagePath))); 
        httpPost.setEntity(builder.build());

        HttpResponse response = httpClient.execute(httpPost, localContext);
        System.out.println("Response Code : "   + response.getStatusLine().getStatusCode());
        BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

        StringBuffer result = new StringBuffer();
        String line = "";
        while ((line = rd.readLine()) != null) {
            result.append(line);
        }
        return result.toString();
 }

所以我的问题是我上传的女巫图片不可读。 然后我使用编辑器检查了图像的来源，所以我注意到图像源中包含以下文本行。

标题：

--5VkWFM_KqrrWu4l-DOUIyJabHz5tZ5_jp
Content-Disposition: form-data; name="image/jpeg"; filename="tempimage.jpg"
Content-Type: application/octet-stream

页脚：

 --5VkWFM_KqrrWu4l-DOUIyJabHz5tZ5_jp

删除上述页眉和页脚并保存图像后，图像现在可读。所以问题是页眉和页脚。我该如何解决这个问题？

【问题讨论】：

标签： android http-post image-uploading

【解决方案1】：

图像解码

                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                BitmapDrawable drawable = (BitmapDrawable) userPhoto.getDrawable();                     
                yourSelectedImage= drawable.getBitmap();    
                yourSelectedImage.compress(Bitmap.CompressFormat.PNG,100,baos);
                imageData = baos.toByteArray();

使用 Httppost 发送图片

  public static HttpResponse sendImage(byte[] image) {
    HttpResponse responsePOST = null;
    try {
        HttpClient client = new DefaultHttpClient();
        HttpPost post = new HttpPost(postURL);
        post.setHeader("Accept", "application/json");                               
        ByteArrayBody bab = new ByteArrayBody(image, firstname+".png");         
        MultipartEntity reqEntity = new MultipartEntity(
                HttpMultipartMode.BROWSER_COMPATIBLE);          
        reqEntity.addPart("user_profile[image_attributes[attachment]]", bab);             
        post.setEntity(reqEntity);                      
        responsePOST = client.execute(post);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return responsePOST;
}

【讨论】：