java - 尝试将图像上传到服务器时出现 500 内部服务器

Question

我正在开发一个允许用户将图像上传到服务器的应用程序。我收到 500 内部服务器错误。我似乎找不到与此错误相关的任何内容来解决我的问题。我的代码如下:

class RetreiveFeedTask extends AsyncTask<String, Void, String> {
    protected String doInBackground(String... url){
        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
            Bitmap bitmap = drawable.getBitmap();
            bitmap.compress(CompressFormat.JPEG, 50, bos);
            byte[] data = bos.toByteArray();

            HttpClient httpClient = new DefaultHttpClient();
            HttpPost postRequest = new HttpPost("http://10.155.103.167:9090/RestServer/rest/todos");
            String fileName = String.format("File_%d.jpg", new Date().getTime());
            ByteArrayBody bab = new ByteArrayBody(data, fileName);
            ContentBody mimePart = bab;

            // File file= new File("/mnt/sdcard/forest.png");
            // FileBody bin = new FileBody(file);

            MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);

            reqEntity.addPart("file", bab);
            postRequest.setEntity(reqEntity);
            postRequest.setHeader("Content-Type", "application/json");
            int timeoutConnection = 60000;

            HttpParams httpParameters = new BasicHttpParams();
            HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
            int timeoutSocket = 60000;
            HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
            HttpConnectionParams.setTcpNoDelay(httpParameters, true);
            HttpResponse response = httpClient.execute(postRequest);
            BufferedReader reader = new BufferedReader(new InputStreamReader(
            response.getEntity().getContent(), "UTF-8"));
            String sResponse;
            StringBuilder s = new StringBuilder();
            System.out.println("Response: " + response.getStatusLine());

            while ((sResponse = reader.readLine()) != null) {
                s = s.append(sResponse);
            }

            txt.setText("NEW TEXT"+s);
        } catch (Exception e) {
            // handle exception here
            e.printStackTrace();
            System.out.println(e.toString());
        }
        return null;
    }
}

Answer 1

所有 HTTP 5xx 代码都明确指出服务器端存在问题；您不会收到 4xx 错误(如 400 Bad Request 或 413 Request Entity Too Large)，这表明您的客户端代码执行了错误。服务器上出现问题(例如上传目录配置错误或数据库连接失败)，您需要检查服务器日志以查看出现的错误消息。