我无法理解为什么我的ajax输出错误的代码。它输出的css负载，我相信它来自我的'MySQLDao.php'文件，但我不确定。代码如下。有人说这是因为“data：{action：'getResults'}”行被忽略了，但我不知道如何制作它所以它不会被忽略。任何帮助表示赞赏。谢谢！
我的Javascript代码的一部分：
function callPHP() {
$.ajax ({
type: "GET",
datatype: "application/json",
url: "MySQLDao.php",
data: { action : 'getResults' },
success: function(output) {
alert(output);
}
});
}
callPHP();
我的PHP文件：
<?php
require("Conn.php");
header("Access-Control-Allow-Origin: *");
error_reporting(E_ALL); ini_set('display_errors', 1);
//Class for holding queries
class MySQLDao
{
private $dbhost = null;
private $dbuser = null;
private $dbpass = null;
private $mysqli = null;
private $dbname = null;
private $result = null;
//constructor
function __construct()
{
$this->dbhost = Conn::$dbhost;
$this->dbuser = Conn::$dbuser;
$this->dbpass = Conn::$dbpass;
$this->dbname = Conn::$dbname;
}
//Attempt a connection to the database
public function openConnection()
{
//Try and connect to the database
$this->mysqli = new mysqli($this->dbhost, $this->dbuser, $this->dbpass, $this->dbname);
//If the connection threw an error, report it
if (mysqli_connect_errno())
{
return false;
}
else
{
return true;
}
}
//Get method for retrieving the database conection
public function getConnection()
{
return $this->mysqli;
}
//Close the connection to the database
public function closeConnection()
{
//If there is a connection to the database then close it
if ($this->mysqli != null)
$this->mysqli->close();
}
//-----------------------------------QUERY METHODS-------------------------------------
public function generateRoomID()
{
$sql = "INSERT INTO room (room_id) VALUES (null);";
$result = $this->mysqli->query($sql);
if ($result == true)
{
$toReturn["status"] = true;
$toReturn["roomID"] = $this->mysqli->insert_id;
return $toReturn;
}
else
{
$toReturn["status"] = false;
$toReturn["message"] = mysql_error($this->mysqli);
return $toReturn;
}
}
public function saveRoom($data)
{
$roomID = $data[0];
$roomDescription = $data[1];
$columns = $data[2];
$rows = $data[3];
$this->mysqli->autocommit(FALSE);
$this->mysqli->query("UPDATE room SET room_description='".$roomDescription."' WHERE room_id='".$roomID."';");
for ($i = 0; $i<count($columns); $i++)
{
for ($j = 1; $j<=$rows[$i]; $j++)
{
$currentLabel = "{$columns[$i]}{$j}";
$this->mysqli->query("INSERT INTO shelf (shelf_label) VALUES ('".$currentLabel."');");
$shelfID = $this->mysqli->insert_id;
$this->mysqli->query("INSERT INTO room_shelf (room_id, shelf_id) VALUES ('".$roomID."','".$shelfID."');");
}
}
if ($this->mysqli->commit())
{
$toReturn["status"] = true;
$toReturn["message"] = "Room Created";
return $toReturn;
}
else
{
$this->mysqli->rollback();
$toReturn["status"] = false;
$toReturn["message"] = "SQL Error";
return $toReturn;
}
}
public function updateShelf($data)
{
$shelfID = $data[0];
$itemName = $data[1];
}
public function getRoomDetails($data)
{
$roomID = $data[0];
$sql = "SELECT room.room_description, shelf.shelf_label, shelf.shelf_id FROM room INNER JOIN room_shelf ON room.room_id=room_shelf.room_id INNER JOIN shelf ON shelf.shelf_id=room_shelf.shelf_id WHERE room.room_id='".$roomID."';";
$result = $this->mysqli->query($sql);
if (mysqli_num_rows($result) > 0)
{
$toReturn["status"] = true;
$toReturn["message"] = "Room Found";
$toReturn["room_description"] = $row['room_description'];
$shelves = [];
foreach ($result as $row)
{
$currentShelf["shelf_label"] = $row['shelf_label'];
$currentShelf["shelf_id"] = $row['shelf_id'];
array_push($shelves, $currentShelf);
}
$toReturn["shelves"] = $shelves;
return $toReturn;
}
else
{
$toReturn["status"] = false;
$toReturn["title"] = "Error";
$toReturn["message"] = "Room Not Found";
return $toReturn;
}
}
public function getResults($data)
{
$sql = "SELECT room.room_description FROM room WHERE room.room_id = 1";
$result = $this->mysqli->query($sql);
echo json_encode($result);
}
}
$daoObj = new MySQLDao();
$daoObj->getResults();
?>
我的康恩班：
<?php
class Conn
{
public static $dbhost = "xxx";
public static $dbname = "xxx";
public static $dbuser = "xxx";
public static $dbpass = "xxx";
}
?>
My BaseClass：
<?php
require("Conn.php");
require("MySQLDao.php");
$handle = fopen("php://input", "rb");
$raw_post_data = '';
while (!feof($handle)) {
$raw_post_data .= fread($handle, 8192);
}
fclose($handle);
if (empty($raw_post_data))
{
$returnValue["status"] = false;
$returnValue["title"] = "Error";
$returnValue["message"] = "No Data Recieved";
echo json_encode($returnValue);
return;
}
else
{
$dao = new MySQLDao();
if ($dao->openConnection() == false)
{
$returnValue["status"] = false;
$returnValue["title"] = "Error";
$returnValue["message"] = "Connection Could Not Be Established Between Server And Database";
echo json_encode($returnValue);
}
else
{
//Decodes data, dont change
$body = json_decode($raw_post_data, true);
$recieved = $body["data"];
//Gets the result of a query
//$result = $dao->MySQLDaoMethodName(parameters);
//Return the result of the query
echo json_encode($result);
}
$dao->closeConnection();
return;
}
?>