通过Android手机将文件上传到服务器（IIS）

Question

我用谷歌搜索了我的问题，但没有找到任何东西。 我在win 7中创建了一个服务器，用于从android手机向其上传文件。但是我无法上传文件。 我不知道服务器设置/配置是否正确？！[server1] [1]

HttpURLConnection connection = null;
        DataOutputStream outputStream = null;
        DataInputStream inputStream = null;

        String pathToOurFile = "/sdcard/test.txt"; //complete path of file from your android device
        String urlServer = "http://www.rar.com/";// complete path of server
        String lineEnd = "\r\n";
        String twoHyphens = "--";
        String boundary = "*****";
        Log.i("*******urlServer**1**", "urlServer ");
        int bytesRead, bytesAvailable, bufferSize;
        byte[] buffer;
        int maxBufferSize = 1 * 1024 * 1024;

        try {
            FileInputStream fileInputStream = new FileInputStream(new File(pathToOurFile));
            Log.i("*******fileInputStream******", "sent: ");
            URL url = new URL(urlServer);
            connection = (HttpURLConnection) url.openConnection();
            Log.i("*******HttpURLConnection**1**", "v ");
            // Allow Inputs & Outputs
            connection.setDoInput(true);
            connection.setDoOutput(true);
            connection.setUseCaches(false);

            // Enable POST method
            connection.setRequestMethod("POST");

            connection.setRequestProperty("Connection", "Keep-Alive");
            connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
            Log.i("*******setRequestProperty**1**", "v ");
            outputStream = new DataOutputStream(connection.getOutputStream());
            Log.i("*******DataOutputStream******", "DataOutputStream: ");
            outputStream.writeBytes(twoHyphens + boundary + lineEnd);
            outputStream.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + pathToOurFile + "\"" + lineEnd);
            outputStream.writeBytes(lineEnd);
            Log.i("*******lineEnd******", "writeBytes: ");
            bytesAvailable = fileInputStream.available();
            bufferSize = Math.min(bytesAvailable, maxBufferSize);
            buffer = new byte[bufferSize];

            // Read file
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);
            Log.i("*******befwhile******", "byteread ");
            Log.i("*******byteread******", String.valueOf(bytesRead));

            while (bytesRead > 0) {
                outputStream.write(buffer, 0, bufferSize);
                bytesAvailable = fileInputStream.available();
                bufferSize = Math.min(bytesAvailable, maxBufferSize);
                bytesRead = fileInputStream.read(buffer, 0, bufferSize);
            }
            Log.i("*******befwhile******", "end while ");
            outputStream.writeBytes(lineEnd);
            outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
            Log.i("*******befwhile******", "twoHyphens ");
            // Responses from the server (code and message)
            int serverResponseCode = 0;
            String serverResponseMessage = "";
            serverResponseCode = connection.getResponseCode();
            Log.i("*******befwhile******", "getResponseCode1 ");
            serverResponseMessage = connection.getResponseMessage();
            Log.i("*******befwhile******", "getResponseMessage2 ");

            fileInputStream.close();
            outputStream.flush();
            outputStream.close();
            Log.i("*******Sending******", "sent: Final***");
        }
        catch (Exception ex) {
            Log.i("*******exception&&" + ex.toString(), ex.getMessage());
            //Exception handling
        }

我也不是outputStream.writeBytes（“ Content-Disposition：form-data; name = \\” uploadedfile \\“; filename = \\”“ + pathToOurFile +” \\“” + lineEnd）的意思； 当我运行以上代码时，它运行直到Log.i（“ ** befwhile * ”，“ twoHyphens”）; 请帮我！

Answer 1

从文档url.openConnection（）返回URLConnection而不是HttpURLConnection，因此方法getResponseCode（）不存在。 您向下转换为HttpURLConnection无效。 同样，所有数据将在刷新方法后发送。