Question

我正在尝试为我的Android应用程序进行注册活动。我正在使用AsyncTask来执行此操作。但是代码似乎没有连接到我的服务器上的数据库（而不是localhost），因为它没有显示Android调试器和监视器中与服务器的任何连接。帮助

private void registrationProcess(String name, String email, String mob, String password)

{

String urlSuffix = "?userName=" + name + "&userMobile=" + mob + "&userEmail=" + email + "&userPassword=" + password;
class RegistrationProcess extends AsyncTask<String, Void, String> {

    ProgressDialog loadingRegister;
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        loadingRegister = ProgressDialog.show(RegisterActivity.this, "Registering...", "Please wait...", true, true);
    }

    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);
    }

    @Override
    protected String doInBackground(String... params) {
        String s = params[0];
        BufferedReader bufferedreader = null;
            try {
                URL url = new URL(REGISTER_URL + s);
                HttpURLConnection con = (HttpURLConnection) url.openConnection();
                con.connect();
                bufferedreader = new BufferedReader(new InputStreamReader(con.getInputStream()));
                String result = bufferedreader.readLine();
                con.disconnect();
                return  result;
            }
            catch (Exception ex)
            {
                System.out.println(ex.getMessage());
                return null;
            }
    }
}
RegistrationProcess rgp = new RegistrationProcess();
rgp.execute(urlSuffix);

}

Answer 1

        Try this code 

    @Override
    protected String doInBackground(String... params) {
        // entrer URL ou le fichier php réside
        String s = params[0];
        try {
            url = new URL(REGISTER_URL+s);
        } catch (MalformedURLException e) {
            e.printStackTrace();
            return "exception";
        }
        try{
            conn = (HttpURLConnection)url.openConnection();
            conn.setReadTimeout(READ_TIMEOUT);
            conn.setConnectTimeout(CONNEXTION_TIMEOUT);
            conn.setRequestMethod("POST");

            conn.setDoInput(true);
            conn.setDoOutput(true);

            // apprend parameters to URL
            Uri.Builder builder = new Uri.Builder()
                    .appendQueryParameter("somthing",params[0 or 1 or ...]);
            String query = builder.build().getEncodedQuery();

            // ouvrir une connexion pour envoyer des informations
            OutputStream os = conn.getOutputStream();
            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
            writer.write(query);
            writer.flush();
            writer.close();
            os.close();
            conn.connect();

        }catch (IOException e){
            e.printStackTrace();
            return "Exception";
        }

        try{

            int response_code = conn.getResponseCode();
            if(response_code == HttpURLConnection.HTTP_OK){
                //Lire data envoyer depuis le serveur
                InputStream input = conn.getInputStream();
                BufferedReader reader = new BufferedReader(new 
                InputStreamReader(input));
                StringBuilder result = new StringBuilder();
                String line;

                while((line = reader.readLine())!=null){
                    result.append(line);
                }
                //envoyer data to "" onPostExecute "" methode
                return(result.toString());
            }
            else{
                return("Echec...");
            }
        }catch (IOException e){
            e.printStackTrace();
            return "Exception";
        }
        finally{
            conn.disconnect();
        }
    } //

AsyncTask中的doInBackground（）无法建立连接

1 个答案: