無法存儲數據JSON

Question

我想創建一個註冊和登錄函數，但我有JSON的問題，因爲它無法存儲數據。

這是從日誌中的JSON響應我得到： 02-24 08:24:47.878: E/JSON(2017): {"tag":"register","success":0,"error":1,"error_msg":"Error occured in Registartion"}

這是我的PHP代碼來存儲數據：

<?php 
if (isset($_POST['tag']) && $_POST['tag'] != '') { 
// get tag 
$tag = $_POST['tag']; 

// include db handler 
require_once 'DB_Function.php'; 
$db = new DB_Functions(); 

// response Array 
$response = array("tag" => $tag, "success" => 0, "error" => 0); 

// check for tag type 
if ($tag == 'login') { 
    // Request type is check Login 
    $email = $_POST['email']; 
    $password = $_POST['password']; 

    // check for user 
    $user = $db->getUserByEmailAndPassword($email, $password); 
    if ($user != false) { 
     // user found 
     // echo json with success = 1 
     $response["success"] = 1; 
     $response["user"]["email"] = $user["email"]; 
     $response["user"]["contact"] = $user["contact_no"]; 
     $response["user"]["created_at"] = $user["year_joined"]; 

     echo json_encode($response); 
    } else { 
     // user not found 
     // echo json with error = 1 
     $response["error"] = 1; 
     $response["error_msg"] = "Incorrect email or password!"; 
     echo json_encode($response); 
    } 
} else if ($tag == 'register') { 
    // Request type is Register new user 
    $email = $_POST['email']; 
    $password = $_POST['password']; 
    $contact = $_POST['contact']; 

    // check if user is already existed 
    if ($db->isUserExisted($email)) { 
     // user is already existed - error response 
     $response["error"] = 2; 
     $response["error_msg"] = "User already existed"; 
     echo json_encode($response); 
    } else { 
     // store user 
     $user = $db->storeUser($email, $contact, $password); 
     if ($user) { 
      // user stored successfully 
      $response["success"] = 1; 
      $response["user"]["email"] = $user["email"]; 
      $response["user"]["contact"] = $user["contact_no"]; 
      $response["user"]["created_at"] = $user["year_joined"]; 

      echo json_encode($response); 
     } else { 
      // user failed to store 
      $response["error"] = 1; 
      $response["error_msg"] = "Error occured in Registartion"; 
      echo json_encode($response); 
     } 
    } 
} else { 
    echo "Invalid Request"; 
} 
} else { 
echo "Access Denied"; 
} 
?> 

登錄和註冊功能共享userfunction類：

public class UserFunctions { 

private JSONParser jsonParser; 
private static String loginURL = "http://10.0.2.2:8000/project/index.php"; 
private static String registerURL = "http://10.0.2.2:8000/project/index.php"; 

private static String login_tag = "login"; 
private static String register_tag = "register"; 

// constructor 
public UserFunctions() { 
    jsonParser = new JSONParser(); 
} 

// login with user provided email/pass 
public JSONObject loginUser(String email, String password) { 
    // Building Parameters 
    List<NameValuePair> params = new ArrayList<NameValuePair>(); 
    params.add(new BasicNameValuePair("tag", login_tag)); 
    params.add(new BasicNameValuePair("email", email)); 
    params.add(new BasicNameValuePair("password", password)); 
    JSONObject json = jsonParser.makeHttpRequest(loginURL, "GET", params); 
    return json; 
} 

// register a new user 
public JSONObject registerUser(String email, String password, String contact) { 
    // Building Parameters 
    List<NameValuePair> params = new ArrayList<NameValuePair>(); 
    params.add(new BasicNameValuePair("tag", register_tag)); 
    params.add(new BasicNameValuePair("email", email)); 
    params.add(new BasicNameValuePair("password", password)); 
    params.add(new BasicNameValuePair("contact", contact)); 
    //params.add(new BasicNameValuePair("year", Integer.toString(year))); 

    // getting JSON Object 
    JSONObject json = jsonParser.makeHttpRequest(registerURL, "GET", params); 
    return json; 
} 

// determine if the user is logged in 
public boolean isUserLoggedIn(Context context) { 
    DatabaseHandler db = new DatabaseHandler(context); 
    int count = db.getRowCount(); 
    if (count > 0) { 
     // user logged in 
     return true; 
    } 
    return false; 
} 

// logout the user 
public boolean logoutUser(Context context) { 
    DatabaseHandler db = new DatabaseHandler(context); 
    db.resetTables(); 
    return true; 
} 
} 

Answer 1

其中一個可能的麻煩可能是您通過GET方法發送參數，但是在您嘗試解析PO的PHP腳本中ST內容是空的。嘗試使用jsonParser.makeHttpRequest(registerURL, "POST", params);代替jsonParser.makeHttpRequest(registerURL, "GET", params);

Answer 2

<?php 

class DB_Functions { 

private $db; 

//put your code here 
// constructor 
function __construct() { 
    require_once 'DB_Connect.php'; 
    // connecting to database 
    $this->db = new DB_Connect(); 
    $this->db->connect(); 
} 

// destructor 
function __destruct() { 

} 

/** 
* Storing new user 
* returns user details 
*/ 
public function storeUser($name, $email, $password) { 
    $uuid = uniqid('', true); 
    $hash = $this->hashSSHA($password); 
    $encrypted_password = $hash["encrypted"]; // encrypted password 
    $salt = $hash["salt"]; // salt 
    $result = mysql_query("INSERT INTO users(unique_id, name, email, encrypted_password, salt, created_at) VALUES('$uuid', '$name', '$email', '$encrypted_password', '$salt', NOW())"); 
    // check for successful store 
    if ($result) { 
     // get user details 
     $uid = mysql_insert_id(); // last inserted id 
     $result = mysql_query("SELECT * FROM users WHERE uid = $uid"); 
     // return user details 
     return mysql_fetch_array($result); 
    } else { 
     return false; 
    } 
} 

/** 
* Get user by email and password 
*/ 
public function getUserByEmailAndPassword($email, $password) { 
    $result = mysql_query("SELECT * FROM users WHERE email = '$email'") or die(mysql_error()); 
    // check for result 
    $no_of_rows = mysql_num_rows($result); 
    if ($no_of_rows > 0) { 
     $result = mysql_fetch_array($result); 
     $salt = $result['salt']; 
     $encrypted_password = $result['encrypted_password']; 
     $hash = $this->checkhashSSHA($salt, $password); 
     // check for password equality 
     if ($encrypted_password == $hash) { 
      // user authentication details are correct 
      return $result; 
     } 
    } else { 
     // user not found 
     return false; 
    } 
} 

/** 
* Check user is existed or not 
*/ 
public function isUserExisted($email) { 
    $result = mysql_query("SELECT email from users WHERE email = '$email'"); 
    $no_of_rows = mysql_num_rows($result); 
    if ($no_of_rows > 0) { 
     // user existed 
     return true; 
    } else { 
     // user not existed 
     return false; 
    } 
} 

/** 
* Encrypting password 
* @param password 
* returns salt and encrypted password 
*/ 
public function hashSSHA($password) { 

    $salt = sha1(rand()); 
    $salt = substr($salt, 0, 10); 
    $encrypted = base64_encode(sha1($password . $salt, true) . $salt); 
    $hash = array("salt" => $salt, "encrypted" => $encrypted); 
    return $hash; 
} 

/** 
* Decrypting password 
* @param salt, password 
* returns hash string 
*/ 
public function checkhashSSHA($salt, $password) { 

    $hash = base64_encode(sha1($password . $salt, true) . $salt); 

    return $hash; 
} 

} 

?>