415使用android上傳文件時出錯

Question

我想將mp3文件上傳到Web服務器，並得到應為字符串的響應，但出現415錯誤，HTTP響應為：無法處理消息，因為內容類型為'multipart / form-data; boundary = * '不是預期的類型'application / soap + xml; charset = utf-8'。： 415，這是我的代碼，為什么服務器拒絕這種格式？

public static int upLoad2Server(String sourceFileUri) {
    String upLoadServerUri = "http://address:port/example/mex";
    // String [] string = sourceFileUri;
    String fileName = sourceFileUri;

    int serverResponseCode = 0;
    HttpURLConnection conn = null;
    DataOutputStream dos = null;
    DataInputStream inStream = null;
    String lineEnd = "\r\n";
    String twoHyphens = "--";
    String boundary = "*****";
    int bytesRead, bytesAvailable, bufferSize;
    byte[] buffer;
    int maxBufferSize = 1 * 1024 * 1024;
    String responseFromServer = "";

    File sourceFile = new File(sourceFileUri);
    if (!sourceFile.isFile()) {
        Log.i("Huzza", "Source File Does not exist");
        return 0;
    }
    try { // open a URL connection to the Servlet
        FileInputStream fileInputStream = new FileInputStream(sourceFile);
        URL url = new URL(upLoadServerUri);
        conn = (HttpURLConnection) url.openConnection(); // Open a HTTP
                                                            // connection to
                                                            // the URL
        conn.setDoInput(true); // Allow Inputs
        conn.setDoOutput(true); // Allow Outputs
        conn.setUseCaches(false); // Don't use a Cached Copy
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Connection", "Keep-Alive");
        conn.setRequestProperty("ENCTYPE", "multipart/form-data");
        conn.setRequestProperty("Content-Type",
                "multipart/form-data;boundary=" + boundary);
        conn.setRequestProperty("uploaded_file", fileName);
        dos = new DataOutputStream(conn.getOutputStream());

        dos.writeBytes(twoHyphens + boundary + lineEnd);
        dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
                + fileName + "\"" + lineEnd);
        dos.writeBytes(lineEnd);

        bytesAvailable = fileInputStream.available(); // create a buffer of
                                                        // maximum size
        Log.i("Huzza", "Initial .available : " + bytesAvailable);

        bufferSize = Math.min(bytesAvailable, maxBufferSize);
        buffer = new byte[bufferSize];

        // read file and write it into form...
        bytesRead = fileInputStream.read(buffer, 0, bufferSize);

        while (bytesRead > 0) {
            dos.write(buffer, 0, bufferSize);
            bytesAvailable = fileInputStream.available();
            bufferSize = Math.min(bytesAvailable, maxBufferSize);
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);
        }

        // send multipart form data necessary after file data...
        dos.writeBytes(lineEnd);
        dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

        // Responses from the server (code and message)
        serverResponseCode = conn.getResponseCode();
        String serverResponseMessage = conn.getResponseMessage();

        Log.i("Upload file to server", "HTTP Response is : "
                + serverResponseMessage + ": " + serverResponseCode);
        // close streams
        Log.i("Upload file to server", fileName + " File is written");
        fileInputStream.close();
        dos.flush();
        dos.close();
    } catch (MalformedURLException ex) {
        ex.printStackTrace();
        Log.i("Upload file to server", "error: " + ex.getMessage(), ex);
    } catch (Exception e) {
        e.printStackTrace();
    }
    // this block will give the response of upload link
    try {
        BufferedReader rd = new BufferedReader(new InputStreamReader(
                conn.getInputStream()));
        String line;
        while ((line = rd.readLine()) != null) {
            Log.i("Huzza", "RES Message: " + line);
        }
        rd.close();
    } catch (IOException ioex) {
        Log.i("Huzza", "error: " + ioex.getMessage(), ioex);
    }
    return serverResponseCode; // like 200 (Ok)

} // end upLoad2Server

Answer 1

您的代碼包括以下內容：

conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);

而錯誤仍然存​​在，它期望Content-Type如下：

application/soap+xml; charset=utf-8

我建議重新檢查為什么將內容類型設置為服務器無法接受的其他類型。