Question

我正在制作一个Android应用程序，允许用户将图片上传到服务器。代码有效，但由于不推荐使用HttpPost方法，我尝试更新解决方案，但更新后的解决方案不起作用。奇怪的是，同样更新的解决方案（具有不同的参数）是我用来登录用户的工具，它可以工作，所以我不知道错误是什么。谁知道我错过了什么？

更新的解决方案：图片无法上传，但不会出现任何错误

 @Override
    protected Void doInBackground(Void... params) {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        image.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
        String encodedImage = Base64.encodeToString(byteArrayOutputStream.toByteArray(), Base64.DEFAULT);


        //PRUEBAS
        try {
            String urlSt = "http://phoenixcoding.tk/SavePicture.php";
            URL url = new URL(urlSt);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("POST");


            Uri.Builder builder = new Uri.Builder()
                    .appendQueryParameter("name", name)
                    .appendQueryParameter("image", encodedImage);
            String query = builder.build().getEncodedQuery();

            OutputStream os = connection.getOutputStream();
            BufferedWriter writer = new BufferedWriter(
                    new OutputStreamWriter(os, "UTF-8"));
            writer.write(query);
            writer.flush();
            writer.close();
            os.close();
            connection.connect();

        }catch (IOException e){
            e.printStackTrace();
        }
        return null;
   }

弃用的解决方案：它有效

@Override
    protected Void doInBackground(Void... params) {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        image.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
        String encodedImage = Base64.encodeToString(byteArrayOutputStream.toByteArray(), Base64.DEFAULT);ArrayList<NameValuePair> dataToSend = new ArrayList<NameValuePair>();
        dataToSend.add(new BasicNameValuePair("image", encodedImage));
        dataToSend.add(new BasicNameValuePair("name", name));

        HttpClient client = new DefaultHttpClient();
        HttpPost post = new HttpPost("http://phoenixcoding.tk/SavePicture.php");

        try{
            post.setEntity(new UrlEncodedFormEntity(dataToSend));
            client.execute(post);
        }catch (Exception e){
            e.printStackTrace();
        }
        return null;
  }

SavePhoto.php：

<?php
$name = $_POST["name"];
$image = $_POST["image"];

$decodedImage = base64_decode("$image");
file_put_contents("pictures/" . $name . ".JPG", $decodedImage);?>

Answer 1

好吧，经过多次尝试，我终于成功了。我不知道原因，但在打开连接后添加输入流使图片上传。

        InputStream is = connection.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
        StringBuilder str = new StringBuilder();
        String strLine;
        while ((strLine = reader.readLine()) != null) {
            str.append(strLine + "\n");
        }
        is.close();

上传图片从android到服务器HttpPost已弃用

1 个答案: