java 登录过程 - android片段，异步任务登录，Asp.net控制器，存储库

Posted 2021-05-08

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                     Bundle savedInstanceState) {

getActivity().setTitle("Login");
View view = inflater.inflate(R.layout.fragment_login, container, false);

try{
    InitializeModel(view);
    login.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if(IsControlValid()){
                AccountViewModel account = GetUserDetails(getActivity());

                if (account.getStatusCode() == 200){
                    TokenViewModel token = GetToken(getActivity(), account);
                    if (token.getStatusCode() == 200){
                        SaveTokenSession(token);
                        NavigateToMainActivity();
                    }else{
                        Toast messageBox = Toast.makeText(getActivity() , token.getMessage() , Toast.LENGTH_LONG);
                        messageBox.show();
                    }
                }else{
                    Toast messageBox = Toast.makeText(getActivity() , account.getMessage() , Toast.LENGTH_LONG);
                    messageBox.show();
                }
            }
        }
    });

}catch (Exception ex){
    String v = ex.getMessage();
}


return view;
}

namespace AndroidApi.Models.Repository
{
    public class AccountRepository : IAccountRepository
    {
        private static string connectionString;

        public AccountRepository()
        {
            if (!string.IsNullOrWhiteSpace(ConfigurationManager.AppSettings["appctxt"]))
                connectionString = ConfigurationManager.AppSettings["appctxt"];
        }

        public AccountViewModel GetByEmailAndPassword(AccountViewModel item)
        {
            AccountViewModel result = null;

            DataSet dsResult = new DataSet();
            string[] tableNames = new string[] { "CustomerAccessKey" };
            SqlParameter[] sqlParameters = new SqlParameter[]
            {
                new SqlParameter("@email", item.Email),
                new SqlParameter("@password", item.Password),
            };
            SqlHelper.FillDataset(connectionString, CommandType.StoredProcedure, "UserGetByEmailAndPassword", dsResult, tableNames, sqlParameters);
            if (dsResult.Tables.Count > 0 && dsResult.Tables[0].Rows.Count > 0)
            {
                result = SqlHelper.ToType<AccountViewModel>(dsResult.Tables[0].Rows[0]);
                result.StatusCode = 200;
                result.Message = "OK";
            }

            return result;
        }
    }
}

namespace AndroidApi.Controllers.Api
{
[AllowAnonymous]
[RoutePrefix("v1/account")]
public class AccountController : ApiController
{
    private readonly IAccountRepository _repository;

    public AccountController(IAccountRepository repository)
    {
        _repository = repository;
    }

    [HttpPost]
    [Route("login")]
    public IHttpActionResult Login([FromBody] AccountViewModel item)
    {
        try
        {
            if (item == null)
                return BadRequest("No user info");

            AccountViewModel result = _repository.GetByEmailAndPassword(item);

            if (result == null)
                return NotFound();

            return Ok(result);
        }
        catch (Exception ex)
        {
            return InternalServerError(ex);
        }
    }
  }
}

public class Login extends AsyncTask<String, String, String> {

ProgressDialog progressDialog;
HttpURLConnection connection = null;
BufferedReader reader = null;

Activity activity;

public Login(Activity activity) {
    this.activity = activity;
}


@Override
protected void onPreExecute() {
    super.onPreExecute();
    // display a progress dialog for good user experiance
    progressDialog = new ProgressDialog(activity);
    progressDialog.setMessage("Please Wait");
    progressDialog.setCancelable(false);
    progressDialog.show();
}

@Override
protected String doInBackground(String... params) {
    String result = null;
    AccountViewModel account;
    Gson gson;

    try {
        URL url = new URL(params[0]);
        String email = params[1];
        String password = params[2];

        connection = (HttpURLConnection) url.openConnection();
        connection.setDoOutput(true);
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "application/json");
        connection.connect();

        JSONObject jsonObject = new JSONObject();
        jsonObject.put("email", email);
        jsonObject.put("password", password);

        DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
        wr.writeBytes(jsonObject.toString());
        wr.flush();
        wr.close();

        int statusCode = connection.getResponseCode();

        if(statusCode == 200){
            InputStream stream = connection.getInputStream();
            reader = new BufferedReader(new InputStreamReader(stream));
            StringBuffer buffer = new StringBuffer();


            String line ="";
            while ((line = reader.readLine()) != null){
                buffer.append(line);
            }
            String  jsonObjectHome = buffer.toString();
            result = jsonObjectHome;
        }

        if (statusCode == 400){
            account = new AccountViewModel();
            account.setStatusCode(statusCode);
            account.setMessage("bad request");

            gson = new Gson();
            result = gson.toJson(account);
        }

        if (statusCode == 404){
            account = new AccountViewModel();
            account.setStatusCode(statusCode);
            account.setMessage("User not found please sign up");

            gson = new Gson();
            result = gson.toJson(account);
        }

        if (statusCode == 500){
            account = new AccountViewModel();
            account.setStatusCode(statusCode);
            account.setMessage("Internal server error");

            gson = new Gson();
            result = gson.toJson(account);
        }



    } catch (Exception e) {
        Log.e("MainActivity", e.getMessage(), e);
    } finally {
        if(connection != null) {
            connection.disconnect();
        }
        try {
            if(reader != null) {
                reader.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    return result;
}

@Override
protected void onPostExecute(String result) {
    super.onPostExecute(result);
    progressDialog.cancel();
}

}

 @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_account);

    try{
        if (isNetworkConnected(AccountActivity.this, getBaseContext())){
              NavigateToLogin();
        }else {
            NavigateToNoInternet();
            Toast messageBox = Toast.makeText(AccountActivity.this , "No internet ..." , Toast.LENGTH_LONG);
            messageBox.show();
        }

    }catch (Exception ex){
        Log.e("Error", ex.getMessage());
    }
}

 private void NavigateToLogin() {
    LoginFragment fragment = new LoginFragment();
    android.support.v4.app.FragmentTransaction fmTransaction = getSupportFragmentManager().beginTransaction();
    fmTransaction.replace(R.id.MainFrameLayout, fragment);
    fmTransaction.commit();
}