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[英]Where would a file be located on my Node.js + Express server if I send a CSV file to the server using jQuery's ajax method?
[英]Login with AJAX, where data is located in a text file
我正在使用 ajax 進行登錄,其中數據存儲在文本文件中,由於某種原因,我的登錄不起作用,它使登錄失敗以及 php 回顯登錄:錯誤。 這是我的 javascript 代碼位:
//Logs in the user
btnLoginForm.addEventListener( "click", loginUser);
function loginUser() {
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
ajUserDataFromServer = JSON.parse( this.responseText );
console.log("The return from the server = " + ajUserDataFromServer);
if( ajUserDataFromServer.login == "ok" ){
console.log("WELCOME");
}
else
{
console.log("LOGIN FAIL - TRY AGAIN");
}
}
}
ajax.open( "POST", "api_login_users_wm.php" , true );
var jFrmLogin = new FormData( frmLogin );
ajax.send( jFrmLogin );
}
這是php:
session_start();
// Load all the users and decode them to an array
$sajUsers = file_get_contents('webshop_mandatory_users.txt');
$ajUsers = json_decode($sajUsers);//turns the string into an array.
// Data comes from the browser
$sEmail = $_POST['txtEmail'];
$sPassword = $_POST['txtPassword'];
// begin looping through the array.
for( $i = 0; $i < count($ajUsers) ; $i++ ) {
//check if the data from the frontend matches any date in the backend - Check each one, one by one.
if ($sEmail == $ajUsers[$i]->email && $sPassword == $ajUsers[$i]->password) { //checks if the value of the username is equal to the value in the array.
echo $sjResponse = '{"login":"ok"}';
exit; //end the if statement and exit if it works.
} else {
echo $sjResponse = '{"login":"error"}'; // it didnt work.
exit;
}
}
?>
在這里,您的結果將僅與第一個元素匹配。 所以你需要使用標志變量來匹配數據
$match_found = false;
for( $i = 0; $i < count($ajUsers) ; $i++ ) {
//check if the data from the frontend matches any date in the backend - Check each one, one by one.
if ($sEmail == $ajUsers[$i]->email && $sPassword == $ajUsers[$i]->password) { //checks if the value of the username is equal to the value in the array.
$match_found = true;
break;
}
}
if($match_found )
{
echo '{"login":"ok"}';
}
else
{
echo '{"login":"ok"}';
}
exit;
用這個:
$flagLogin = false;
// begin looping through the array.
for( $i = 0; $i < count($ajUsers) ; $i++ ) {
//check if the data from the frontend matches any date in the backend - Check each one, one by one.
if ($sEmail == $ajUsers[$i]->email && $sPassword == $ajUsers[$i]->password) { //checks if the value of the username is equal to the value in the array.
$flagLogin = true;
break;
}
}
if($flagLogin) {
echo $sjResponse = '{"login":"ok"}';
exit; //end the if statement and exit if it works.
} else {
echo $sjResponse = '{"login":"error"}'; // it didnt work.
exit;
}
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