E/Volley：[145] BasicNetwork.performRequest：https:// 的意外响应代码 404

Question

我的第一个帖子：Anything I try to store on database enters with value '0'

我解决了这个问题，但现在我遇到了另一个问题： 为什么我尝试登录时出现此错误？

09-11 17:20:46.382 2577-5031/com.example.gustavo.loginregister D/NetworkSecurityConfig: No Network Security Config specified, using platform default
09-11 17:20:47.415 2577-5031/com.example.gustavo.loginregister E/Volley: [145] BasicNetwork.performRequest: Unexpected response code 404 for https://xxxxxxx.000webhostapp.com/Login.php
09-11 17:22:39.640 2577-6700/com.example.gustavo.loginregister E/Volley: [152] BasicNetwork.performRequest: Unexpected response code 404 for https://xxxxxxx.000webhostapp.com/Login.php

LoginActivity.java 文件：

package com.example.gustavo.loginregister;

import android.app.AlertDialog;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.toolbox.Volley;

import org.json.JSONException;
import org.json.JSONObject;

public class LoginActivity extends AppCompatActivity {

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

        final EditText edtEmail = (EditText) findViewById(R.id.edtEmail);
        final EditText edtSenha = (EditText) findViewById(R.id.edtSenha);
        final Button btnLogin = (Button) findViewById(R.id.btnLogin);
        final TextView txtCadastreSe = (TextView) findViewById(R.id.txtCadastreSe);

        txtCadastreSe.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent registroIntent = new Intent(LoginActivity.this, RegisterActivity.class);
                LoginActivity.this.startActivity(registroIntent);
            }
        });

        btnLogin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final String email = edtEmail.getText().toString();
                final String password = edtSenha.getText().toString();

                Response.Listener<String> responseListener = new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        try {
                            JSONObject jsonResponse = new JSONObject(response);
                            boolean success = jsonResponse.getBoolean("success");

                            if (success) {
                                String name = jsonResponse.getString("name");
                                String lastname = jsonResponse.getString("lastname");

                                Intent intent = new Intent(LoginActivity.this, UserAreaActivity.class);
                                intent.putExtra("name", name);
                                intent.putExtra("lastname", lastname);
                                intent.putExtra("email", email);
                                LoginActivity.this.startActivity(intent);

                            } else {
                                AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
                                builder.setMessage("Login Failed")
                                        .setNegativeButton("Retry",null)
                                        .create()
                                        .show();
                            }

                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                };

                LoginRequest loginRequest = new LoginRequest(email, password, responseListener);
                RequestQueue queue = Volley.newRequestQueue(LoginActivity.this);
                queue.add(loginRequest);
            }
        });
    }
}

LoginRequest.java 文件：

package com.example.gustavo.loginregister;

import com.android.volley.Response;
import com.android.volley.toolbox.StringRequest;

import java.util.HashMap;
import java.util.Map;

public class LoginRequest extends StringRequest {
    private static final String LOGIN_REQUEST_URL="https://wavecheck.000webhostapp.com/Login.php";
    private Map<String, String> params;

    public LoginRequest(String email, String password, Response.Listener<String> listener){
        super(Method.POST, LOGIN_REQUEST_URL, listener, null);
        params = new HashMap<>();
        params.put("email", email);
        params.put("password", password);
    }

    @Override
    public Map<String, String> getParams() {
        return params;
    }
}

Login.php 文件：

<?php
    require("Password.php");
    $con = mysqli_connect("localhost", "xxx", "xxx", "xxxx");
    
    $email = $_POST["email"];
    $password = $_POST["password"];
    
    $statement = mysqli_prepare($con, "SELECT * FROM user WHERE email = ?");
    mysqli_stmt_bind_param($statement, "s", $email);
    mysqli_stmt_execute($statement);
    mysqli_stmt_store_result($statement);
    mysqli_stmt_bind_result($statement, $colUserID, $colName, $colLastname, $colEmail, $colPassword);
    
    $response = array();
    $response["success"] = false;  
    
    while(mysqli_stmt_fetch($statement)){
        if (password_verify($password, $colPassword)) {
            $response["success"] = true;  
            $response["name"] = $colName;
            $response["lastname"] = $colLastname;
            $response["email"] = $colEmail;
        }
    }
    echo json_encode($response);
?>

Answer 1

当您直接访问https://wavecheck.000webhostapp.com/Login.php 时，它不会返回 JSON。它返回一个 404 错误页面“这里什么都没有。 此域已准备好注册。”。这是来自主机的消息。显然您使用的是免费主机，并且“wavecheck”子域不存在。因此您需要重新托管您的 PHP 脚本，或与免费主机联系以了解发生了什么。