Android允许多个文件上传（最大150 MB）到PHP Server

Question

我必须允许用户在我的android应用程序到php服务器的单个请求中上传多个文件（可以是图像/视频/音频）。我正在使用REST Web服务。

对于此功能，我使用以下代码：

/* To upload the multiple documents */
public void uploadFile() {
    String charset = "UTF-8";
    File[] uploadFileArray = new File[mediaList.size()];

    for (int i = 0; i < mediaList.size(); i++) {
        uploadFileArray[i] = new File(mediaList.get(i).getMediaPath());
    }

    try {
        MultipartUtility multipart = new MultipartUtility(upLoadServerUri, charset);

        for (int i = 0; i < mediaList.size(); i++) {
            if (isImage)) {
                multipart.addFilePart("image_doc[]", uploadFileArray[i]);
            } 
            else if (isVideo) {
                multipart.addFilePart("video_doc[]", uploadFileArray[i]);
            } 
            else if (isAudio) {
                multipart.addFilePart("audio_doc[]", uploadFileArray[i]);
            }
        }

        List<String> responseUploadDocument = multipart.finish();
        System.out.println("SERVER REPLIED:");

        for (String line : responseUploadDocument) {
            System.out.println(line);
            responseUploadDocumentString = line;
        }

        if (responseUploadDocumentString != null) {
            JSONObject jsonObj = new JSONObject(responseUploadDocumentString);
            statusUploadDoc = jsonObj.getString("status");
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
}

我的MultipartUtility Class如下：

public class MultipartUtility {
    private final String boundary;
    private static final String LINE_FEED = "\r\n";
    private HttpURLConnection httpConn;
    private String charset;
    private OutputStream outputStream;
    private PrintWriter writer;

    public MultipartUtility(String requestURL, String charset)
            throws IOException {
        this.charset = charset;

        boundary = "===" + System.currentTimeMillis() + "===";

        URL url = new URL(requestURL);
        httpConn = (HttpURLConnection) url.openConnection();

        ***httpConn.setChunkedStreamingMode(0);***
        httpConn.setUseCaches(false);
        httpConn.setDoOutput(true); // indicates POST method
        httpConn.setDoInput(true);

        httpConn.setRequestProperty("Content-Type",
                "multipart/form-data; boundary=" + boundary);
        httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
        httpConn.setRequestProperty("Test", "Bonjour");

        outputStream = httpConn.getOutputStream();
        writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
                true);
    }

    public void addFormField(String name, String value) {
        writer.append("--" + boundary).append(LINE_FEED);
        writer.append("Content-Disposition: form-data; name=\"" + name + "\"")
                .append(LINE_FEED);
        writer.append("Content-Type: text/plain; charset=" + charset).append(
                LINE_FEED);
        writer.append(LINE_FEED);
        writer.append(value).append(LINE_FEED);
        writer.flush();
    }

    public void addFilePart(String fieldName, File uploadFile)
            throws IOException {
        String fileName = uploadFile.getName();
        writer.append("--" + boundary).append(LINE_FEED);
        writer.append(
                "Content-Disposition: form-data; name=\"" + fieldName
                        + "\"; filename=\"" + fileName + "\"")
                .append(LINE_FEED);
        writer.append(
                "Content-Type: "
                        + URLConnection.guessContentTypeFromName(fileName))
                .append(LINE_FEED);
        writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
        writer.append(LINE_FEED);
        writer.flush();

        FileInputStream inputStream = new FileInputStream(uploadFile);
        byte[] buffer = new byte[4096];
        int bytesRead = -1;
        while ((bytesRead = inputStream.read(buffer)) != -1) {
            outputStream.write(buffer, 0, bytesRead);
        }
        outputStream.flush();
        inputStream.close();

        writer.append(LINE_FEED);
        writer.flush();
    }

    public void addHeaderField(String name, String value) {
        writer.append(name + ": " + value).append(LINE_FEED);
        writer.flush();
    }

    public List<String> finish() throws IOException {
        List<String> response = new ArrayList<String>();

        writer.append(LINE_FEED).flush();
        writer.append("--" + boundary + "--").append(LINE_FEED);
        writer.close();

        // checks server's status code first
        int status = httpConn.getResponseCode();
        if (status == HttpURLConnection.HTTP_OK) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    httpConn.getInputStream()));
            String line = null;
            while ((line = reader.readLine()) != null) {
                response.add(line);
            }
            reader.close();
            httpConn.disconnect();
        } else {
            throw new IOException("Server returned non-OK status: " + status);
        }

        return response;
    }
}

但现在的问题是：

在本地服务器上：

允许上传到16MB [如果未设置setChunkedStremmingMode（0）]
允许上传到150MB [如果设置了setChunkedStremmingMode（0）]

在Live Server上：

允许上传到16MB [如果未设置setChunkedStremmingMode（0）]
禁止上传单个KB文件[如果设置了setChunkedStremmingMode（0）]

我的本地和实时服务器都具有相同的配置。我不明白为什么setChunkedStremmingMode（0）不适用于实时服务器。

Answer 1

另一答案