齐射发送对象

Question

我怀疑这让我感到困惑，我正在使用android / nodejs / postgreSQL，并且能够将http请求发送到服务器并存储信息。

但是我这样做是在没有考虑好的实践的情况下进行的，那就是让模型与用户关联。

因此，基本上我从寄存器表单中获取数据，然后使用表单信息进行简单的params.put并发送包含键/值信息的数据。

但是，现在我想拥有一个用户模型，并传递经过params.put的用户模型并做同样的事情。

这是考虑好的做法吗？还是我应该忘记用户模型并执行类似的操作？

这是我目前正在做的事情：

 public void register(View view) {

        //get form data
        final String username = usernameTxt.getText().toString();
        String password = passwordTxt.getText().toString();
        String email = emailTxt.getText().toString();
        Log.d("email",String.valueOf(isValidEmail(email)));

        if (!isValidEmail(email)) {
            emailTxt.setError("Invalid Email");
        }

        //inicialize a map with pair key value
        final Map<String, String> params = new HashMap<String, String>();

        // Add form fields to the map
        params.put("username", username);
        params.put("email", email);
        params.put("password", password);

        /**
         * Efetua um pedido ao servidor
         *
         * @param URl    url do servidor a aceder
         * @param JSONObject objeto json a ser retornado através do access point
         *
         */
        JsonObjectRequest request = new JsonObjectRequest(URL, new JSONObject(params),
                new Response.Listener<JSONObject>() {
                    @Override
                    public void onResponse(JSONObject response) {
                        //TODO verificar o status code da resposta apenas deverá registar login caso seja 200
                        //verifica
                        Log.d("response",response.toString());
                        Intent i = new Intent(Register.this,Login.class);
                        i.putExtra("username",username);
                        startActivity(i);
                        finish();
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                String body;
                //get response body and parse with appropriate encoding
                if(error.networkResponse.data!=null) {
                    String statusCode = String.valueOf(error.networkResponse.statusCode);
                    try {
                        body = new String(error.networkResponse.data,"UTF-8");
                        JSONObject jsonObj = new JSONObject(body);
                        Log.d("body",String.valueOf(jsonObj.get("message")));
                        showToast(String.valueOf(jsonObj.get("message")));
                    } catch (UnsupportedEncodingException e) {
                        showToast("You need to connect to the internet!");
                    } catch (JSONException e) {
                        Log.d("json:","problems decoding jsonObj");
                    }
                }
                //do stuff with the body...
            }


        });

        request.setRetryPolicy(new DefaultRetryPolicy(60000, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));

queue.add(request);
}

Answer 1

步骤1：使模型类可解析/可序列化。
步骤2：在模型类中重写toString（）。
步骤3： Map<String,JSONObject> params = new HashMap<>(); JSONObject object = null; try{ object = new JSONObject(classObject.toString()); }catch (Exception e){ } params.put("key", object); JSONObject objectParams = new JSONObject(params); Map<String,JSONObject> params = new HashMap<>(); JSONObject object = null; try{ object = new JSONObject(classObject.toString()); }catch (Exception e){ } params.put("key", object); JSONObject objectParams = new JSONObject(params);
做完了！！！

Answer 2

希望对您有所帮助，请尝试在您的应用程序中实施

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private static final String REGISTER_URL = "http://foo.com/UserRegistration/volleyRegister.php";

    public static final String KEY_USERNAME = "username";
    public static final String KEY_PASSWORD = "password";
    public static final String KEY_EMAIL = "email";


    private EditText editTextUsername;
    private EditText editTextEmail;
    private EditText editTextPassword;

    private Button buttonRegister;

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

        editTextUsername = (EditText) findViewById(R.id.editTextUsername);
        editTextPassword = (EditText) findViewById(R.id.editTextPassword);
        editTextEmail= (EditText) findViewById(R.id.editTextEmail);

        buttonRegister = (Button) findViewById(R.id.buttonRegister);

        buttonRegister.setOnClickListener(this);
    }

    private void registerUser(){
        final String username = editTextUsername.getText().toString().trim();
        final String password = editTextPassword.getText().toString().trim();
        final String email = editTextEmail.getText().toString().trim();

        StringRequest stringRequest = new StringRequest(Request.Method.POST, REGISTER_URL,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        Toast.makeText(MainActivity.this,response,Toast.LENGTH_LONG).show();
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(MainActivity.this,error.toString(),Toast.LENGTH_LONG).show();
                    }
                }){
            @Override
            protected Map<String,String> getParams(){
                Map<String,String> params = new HashMap<String, String>();
                params.put(KEY_USERNAME,username);
                params.put(KEY_PASSWORD,password);
                params.put(KEY_EMAIL, email);
                return params;
            }

        };



           RequestQueue requestQueue = Volley.newRequestQueue(this);
            requestQueue.add(stringRequest);
        }

        @Override
        public void onClick(View v) {
            if(v == buttonRegister){
                registerUser();
            }
        }
    }