使用Volley发送邮件请求并以PHP接收

我想在我的项目中使用抽象处理所有的HTTP请求,因为据我所知,它是最有效的。 所以我开始学习按照这个AndroidHive教程齐射。

我的第一个GET请求成功了。 然后我转到POST请求,我失败了。 我看到堆栈溢出,许多人遇到了问题,结合PHP的sorting请求。 我相信我们不能使用正常的方式访问它,因为volley会将JSON对象发送到我们指定的URL。

我尝试了很多解决scheme,但没有成功。 我想应该有一个简单和标准的方式使用PHP的排球。 所以我想知道我需要做什么才能接收我的PHP代码中的volley发送的json对象。

而且我该如何检查volley是否真的发送了一个JSON对象呢?

我的凌空代码发送简单的发布请求:

 JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.POST, url, null, new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { Log.d(TAG, response.toString()); pDialog.hide(); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { VolleyLog.d(TAG, "Error: " + error.getMessage()); pDialog.hide(); } }) { @Override protected Map<String, String> getParams() { Map<String, String> params = new HashMap<String, String>(); params.put("name", "Droider"); return params; } }; // Adding request to request queue AppController.getInstance().addToRequestQueue(jsonObjReq, tag_json_obj); 

我的PHP代码接收json对象:(我很确定这是错误的方式,我不是那么好在PHP中)

 <?php $jsonReceiveData = json_encode($_POST); echo $jsonReceivedData; ?> 

我尝试了很多方法来接受PHP中的JSON对象,就像这个echo file_get_contents('php://input');

结果

 null 

编辑(正确的方式感谢格鲁吉亚Benetatos)

我提到的类名是CustomRequest ,如下所示创build类:

 import java.io.UnsupportedEncodingException; import java.util.Map; import org.json.JSONException; import org.json.JSONObject; import com.android.volley.NetworkResponse; import com.android.volley.ParseError; import com.android.volley.Request; import com.android.volley.Response; import com.android.volley.Response.ErrorListener; import com.android.volley.Response.Listener; import com.android.volley.toolbox.HttpHeaderParser; public class CustomRequest extends Request<JSONObject>{ private Listener<JSONObject> listener; private Map<String, String> params; public CustomRequest(String url, Map<String, String> params, Listener<JSONObject> reponseListener, ErrorListener errorListener) { super(Method.GET, url, errorListener); this.listener = reponseListener; this.params = params; } public CustomRequest(int method, String url, Map<String, String> params, Listener<JSONObject> reponseListener, ErrorListener errorListener) { super(method, url, errorListener); this.listener = reponseListener; this.params = params; } @Override protected Map<String, String> getParams() throws com.android.volley.AuthFailureError { return params; }; @Override protected void deliverResponse(JSONObject response) { listener.onResponse(response); } @Override protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) { try { String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers)); return Response.success(new JSONObject(jsonString), HttpHeaderParser.parseCacheHeaders(response)); } catch (UnsupportedEncodingException e) { return Response.error(new ParseError(e)); } catch (JSONException je) { return Response.error(new ParseError(je)); } } } 

现在在我的活动中,我称之为:

 String url = some valid url; Map<String, String> params = new HashMap<String, String>(); params.put("name", "Droider"); CustomRequest jsObjRequest = new CustomRequest(Method.POST, url, params, new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { try { Log.d("Response: ", response.toString()); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError response) { Log.d("Response: ", response.toString()); } }); AppController.getInstance().addToRequestQueue(jsObjRequest); 

我的PHP代码如下:

 <?php $name = $_POST["name"]; $j = array('name' =>$name); echo json_encode($j); ?> 

现在它返回正确的值:

 Droider 

Solutions Collecting From Web of "使用Volley发送邮件请求并以PHP接收"

自己有很多问题,试试这个!

 public class CustomRequest extends Request<JSONObject> { private Listener<JSONObject> listener; private Map<String, String> params; public CustomRequest(String url,Map<String, String> params, Listener<JSONObject> responseListener, ErrorListener errorListener) { super(Method.GET, url, errorListener); this.listener = responseListener; this.params = params; } public CustomRequest(int method, String url,Map<String, String> params, Listener<JSONObject> reponseListener, ErrorListener errorListener) { super(method, url, errorListener); this.listener = reponseListener; this.params = params; } @Override protected Map<String, String> getParams() throws com.android.volley.AuthFailureError { return params; }; @Override protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) { try { String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers)); return Response.success(new JSONObject(jsonString), HttpHeaderParser.parseCacheHeaders(response)); } catch (UnsupportedEncodingException e) { return Response.error(new ParseError(e)); } catch (JSONException je) { return Response.error(new ParseError(je)); } } @Override protected void deliverResponse(JSONObject response) { listener.onResponse(response); } 

PHP

 $username = $_POST["username"]; $password = $_POST["password"]; echo json_encode($response); 

你必须制作一张地图,地图支持键值types,并且比你用齐射张贴。 在PHP中,你得到$ variable = $ _POST [“key_from_map”]来检索$variables的值然后你build立响应和json_encode它。

这里是一个如何查询SQL和发布回答为JSON的PHP示例

 $response["devices"] = array(); while ($row = mysqli_fetch_array($result)) { $device["id"] = $row["id"]; $device["type"] = $row["type"]; array_push($response["devices"], $device); } $response["success"] = true; echo json_encode($response); 

你可以在这里看到响应types是JSONObject

 public CustomRequest(int method, String url,Map<String, String> params, Listener<JSONObject> reponseListener, ErrorListener errorListener) 

看听者的参数!

 JSONObject params = new JSONObject(); try { params.put("name", "Droider"); } catch (JSONException e) { e.printStackTrace(); } JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.POST, url, params, new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { Log.d(TAG, response.toString()); pDialog.hide(); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { VolleyLog.d(TAG, "Error: " + error.getMessage()); pDialog.hide(); } }) { @Override public Map<String, String> getHeaders() throws AuthFailureError { HashMap<String, String> headers = new HashMap<String, String>(); headers.put("Content-Type", "application/json; charset=utf-8"); return headers; } }; // Adding request to request queue AppController.getInstance().addToRequestQueue(jsonObjReq, tag_json_obj); 

并在你的服务器端:

 <?php $value = json_decode(file_get_contents('php://input')); $file = 'MyName.txt'; file_put_contents($file, "The received name is {$value->name} ", FILE_APPEND | LOCK_EX); ?> 

打开MyName.txt并查看结果。

这里是一个简单的代码发送到php脚本的请求

MainActivity.java

 public class MainActivity extends AppCompatActivity implements View.OnClickListener { private static final String REGISTER_URL = "http://simplifiedcoding.16mb.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(); } } } 

volleyRegister.php

 <?php if($_SERVER['REQUEST_METHOD']=='POST'){ $username = $_POST['username']; $email = $_POST['email']; $password = $_POST['password']; require_once('dbConnect.php'); $sql = "INSERT INTO volley (username,password,email) VALUES ('$username','$email','$password')"; if(mysqli_query($con,$sql)){ echo "Successfully Registered"; }else{ echo "Could not register"; } }else{ echo 'error'} } 

来源: Android Volley Post请求教程

总是使用StringRequest和volley,因为如果JSON被损坏或格式不正确,从服务器获取响应是更安全的方法。

ANDROID代码:

 StringRequest stringRequest = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() { @Override public void onResponse(String response) { try {JSONObject jsonObject = new JSONObject(response); } catch (JSONException ignored) { } } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError volleyError) { if (volleyError instanceof TimeoutError) { } } }) { @Override public Map<String, String> getParams() throws AuthFailureError { HashMap<String, String> headers = new HashMap<>(); headers.put("name", "Droider"); return headers; } @Override public Priority getPriority() { return Priority.IMMEDIATE; } }; ApplicationController.getInstance().addToRequestQueue(stringRequest); 

PHP代码:

 <?php $name = $_POST["name"]; $j = array('name' =>$name); echo json_encode($j); ?> 

这对我来说很好,如果这有助于任何人

 public class LoginActivity extends AppCompatActivity { private EditText Email; private EditText Password; private String URL = "http://REPLACE ME WITH YOUR URL/login.php"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); TextView register = (TextView) findViewById(R.id.Register); TextView forgotten = (TextView) findViewById(R.id.Forgotten); Button login = (Button) findViewById(R.id.Login); Email = (EditText) findViewById(R.id.Email); Password = (EditText) findViewById(R.id.Password); Password.setImeOptions(EditorInfo.IME_ACTION_DONE); login.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { RequestQueue MyRequestQueue = Volley.newRequestQueue (LoginActivity.this); MyRequestQueue.add(MyStringRequest); } }); } StringRequest MyStringRequest = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() { @Override public void onResponse(String response) { Toast.makeText(getApplicationContext(),response.trim(), Toast.LENGTH_SHORT).show(); } }, new Response.ErrorListener() { //Create an error listener to handle errors appropriately. @Override public void onErrorResponse(VolleyError error) { Toast.makeText(getApplicationContext(),error.toString().trim(), Toast.LENGTH_LONG).show(); } }) { protected Map<String, String> getParams() { final String email = Email.getText().toString().trim(); final String password = Password.getText().toString().trim(); Map<String, String> MyData = new HashMap<String, String>(); MyData.put("email", email); MyData.put("password", password); return MyData; } }; } the login.php <?php $message = $_POST["email"]; echo $message; ?>