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我无法在我的服务器上输入数据 我正在使用wampp服务器，每次运行我的项目和输入数据时，我总是得到以下错误server connection failed。android studio - 登录注册php mysql（服务器连接失败）
有人可以帮我解决这个问题吗？
下面是我的代码：
public class MainActivity extends ActionBarActivity {
protected EditText username;
private EditText password;
protected String enteredUsername;
private final String serverUrl = "url server";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
username = (EditText)findViewById(R.id.username_field);
password = (EditText)findViewById(R.id.password_field);
Button loginButton = (Button)findViewById(R.id.login);
Button registerButton = (Button)findViewById(R.id.register_button);
loginButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
enteredUsername = username.getText().toString();
String enteredPassword = password.getText().toString();
if(enteredUsername.equals("") || enteredPassword.equals("")){
Toast.makeText(MainActivity.this, "Username or password must be filled", Toast.LENGTH_LONG).show();
return;
}
if(enteredUsername.length() <= 1 || enteredPassword.length() <= 1){
Toast.makeText(MainActivity.this, "Username or password length must be greater than one", Toast.LENGTH_LONG).show();
return;
}
// request authentication with remote server4
AsyncDataClass asyncRequestObject = new AsyncDataClass();
asyncRequestObject.execute(serverUrl, enteredUsername, enteredPassword);
}
});
registerButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, RegisterActivity.class);
startActivity(intent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private class AsyncDataClass extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
HttpParams httpParameters = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParameters, 5000);
HttpConnectionParams.setSoTimeout(httpParameters, 5000);
HttpClient httpClient = new DefaultHttpClient(httpParameters);
HttpPost httpPost = new HttpPost(params[0]);
String jsonResult = "";
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("username", params[1]));
nameValuePairs.add(new BasicNameValuePair("password", params[2]));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpClient.execute(httpPost);
jsonResult = inputStreamToString(response.getEntity().getContent()).toString();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return jsonResult;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
System.out.println("Resulted Value: " + result);
if(result.equals("") || result == null){
Toast.makeText(MainActivity.this, "Server connection failed", Toast.LENGTH_LONG).show();
return;
}
int jsonResult = returnParsedJsonObject(result);
if(jsonResult == 0){
Toast.makeText(MainActivity.this, "Invalid username or password", Toast.LENGTH_LONG).show();
return;
}
if(jsonResult == 1){
Intent intent = new Intent(MainActivity.this, LoginActivity.class);
intent.putExtra("USERNAME", enteredUsername);
intent.putExtra("MESSAGE", "You have been successfully login");
startActivity(intent);
}
}
private StringBuilder inputStreamToString(InputStream is) {
String rLine = "";
StringBuilder answer = new StringBuilder();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
try {
while ((rLine = br.readLine()) != null) {
answer.append(rLine);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return answer;
}
}
private int returnParsedJsonObject(String result){
JSONObject resultObject = null;
int returnedResult = 0;
try {
resultObject = new JSONObject(result);
returnedResult = resultObject.getInt("success");
} catch (JSONException e) {
e.printStackTrace();
}
return returnedResult;
}
}
user.php的
<?php
include_once 'db.php';
class User{
private $db;
private $db_table = "users";
public function __construct(){
$this->db = new DbConnect();
}
public function isLoginExist($username, $password){
$query = "select * from " . $this->db_table . " where username = '$username' AND password = '$password' Limit 1";
$result = mysqli_query($this->db->getDb(), $query);
if(mysqli_num_rows($result) > 0){
mysqli_close($this->db->getDb());
return true;
}
mysqli_close($this->db->getDb());
return false;
}
public function createNewRegisterUser($username, $password, $email){
$query = "insert into users (username, password, email, created_at, updated_at) values ('$username', '$password', '$email', NOW(), NOW())";
$inserted = mysqli_query($this->db->getDb(), $query);
if($inserted == 1){
$json['success'] = 1;
}else{
$json['success'] = 0;
}
mysqli_close($this->db->getDb());
return $json;
}
public function loginUsers($username, $password){
$json = array();
$canUserLogin = $this->isLoginExist($username, $password);
if($canUserLogin){
$json['success'] = 1;
}else{
$json['success'] = 0;
}
return $json;
}
}
?>
的index.php
<?php
require_once 'androidlogin/user.php';
$username = "";
$password = "";
$email = "";
echo "hello";
if(isset($_POST['username'])){
$username = $_POST['username'];
}
if(isset($_POST['password'])){
$password = $_POST['password'];
}
if(isset($_POST['email'])){
$email = $_POST['email'];
}
// Instance of a User class
$userObject = new User();
// Registration of new user
if(!empty($username) && !empty($password) && !empty($email)){
$hashed_password = md5($password);
$json_registration = $userObject->createNewRegisterUser($username, $hashed_password, $email);
echo json_encode($json_registration);
}
// User Login
if(!empty($username) && !empty($password) && empty($email)){
$hashed_password = md5($password);
$json_array = $userObject->loginUsers($username, $hashed_password);
echo json_encode($json_array);
}
?>
db.php
<?php
include_once 'config.php';
class DbConnect{
private $connect;
public function __construct(){
$this->connect = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME);
if (mysqli_connect_errno($this->connect))
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
}
public function getDb(){
return $this->connect;
}
}
谢谢你回答我的问题，先生，我会尝试你的建议:) – indodev28
我已经上传到主机，现在的问题每次我总是注册显示无效的用户名或密码或电子邮件。请帮我先生:( – indodev28
请问您可以在这里包括你的PHP代码吗？ –