我阅读了很多与此类似的问题，但是在我阅读的线程中，对于这个问题确实没有答案。我对服务器脚本进行了简单的Ajax调用，以比较两个字符串。但是，尽管如此，但有时服务器会以jquery.min.js:4 POST https://www.example.com/otpcheck net::ERR_EMPTY_RESPONSE和类似的内容进行响应：XHR failed loading: POST
由于我实际上可以在Chrome调试器上确认发布数据，因此该错误的真正出处在哪里。这是我的Ajax调用脚本：
// --------------- START REGISTRATION OTP CHECK -----------------------------
$(document).ready(function() {
// Hide error label
$("#error2").hide();
$("#loader2").hide();
// process the form
$('#RegistrationOTPForm').submit(function(event) {
$("#error2").hide(); // hide errors when form submitted
// get the form data
// there are many ways to get this data using jQuery (you can use the class or id also)
var formData = {
'OTP' : $('input[name=OTP]').val()
};
// process the form
$.ajax({
type : 'POST', // define the type of HTTP verb we want to use (POST for our form)
url : './OTPcheck.php', // the url where we want to POST
data : formData, // our data object
dataType : 'json', // what type of data do we expect back from the server
beforeSend: function()
{
$("#error2").hide();
$("#error3").hide();
$("#loader").hide();
$("#loader2").hide();
$("input[type=submit]").attr("disabled", "disabled");
$("input[type=text]").attr("disabled", "disabled");
$("input[type=password]").attr("disabled", "disabled");
$("select").attr("disabled", "disabled");
},
encode : true
})
// using the done promise callback
.done(function(data) {
// log data to the console so we can see
console.log(data);
// here we will handle errors and validation messages
if ( ! data.success) {
// handle errors for ---------------
if (data.errors.OTP) {
$("#OTP").val("");
$("input[type=submit]").removeAttr("disabled");
$("input[type=text]").removeAttr("disabled");
$("input[type=password]").removeAttr("disabled");
$("select").removeAttr("disabled");
$("#error2").show(function(){
$('#error2').html('' + data.errors.OTP + ''); // add the actual error message to the error label
});
}
} else {
// ALL GOOD! just show the success message!
$("input[type=password]").attr("disabled", "disabled");
$("input[type=submit]").attr("disabled", "disabled");
$("input[type=text]").attr("disabled", "disabled");
$("select").attr("disabled", "disabled");
window.location.href= "./RecoverUserIDSecurityInformation";
}
})
// using the fail promise callback
.fail(function(data) {
// show any errors
// best to remove for production
console.log(data);
});
// stop the form from submitting the normal way and refreshing the page
event.preventDefault();
});
});
// --------------- END REGISTRATION OTP CHECK -----------------------------
这是它调用的服务器端脚本：OTPcheck.php
<?php
if(!isset($_SESSION))
{
session_start();
}
//-- data and error arrays
$errors = array(); // array to hold validation errors
$data = array(); // array to pass back data
// --------------------
$Real_OTP = "123456";
/**********************************************************************/
// -------- Function to test input
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
// -------------------------
if ( !empty($_POST)) {
// Variables from post
$GLOBALS['OTP'] = test_input($_POST["OTP"]);
/*************************************************************/
// Checks for empty Amount
if (empty($OTP)) {
$errors['OTP'] = 'You have entered an invalid code';
} else if (strcmp($OTP, $Real_OTP) !== 0){ //--Comparing both strings if they are not same while maintaning case sensitivity like Cow should be Cow so if == 0, strings are same. If !==0 strings are not equal
$errors['OTP'] = 'You have entered an invalid code';
} else {
$_SESSION['RecoverUserIDProgress'] = "Progress";
$data['success'] = true;
}
/*************************************************************/
/************************************************************/
if ( ! empty($errors)) {
// if there are items in our errors array, return those errors
$data['success'] = false;
$data['errors'] = $errors;
} else {
$data['success'] = true;
// if there are no errors process our form, then return a message
}
} else {
$data['success'] = false;
$data['errors'] = $errors;
}
// return all our data to an AJAX call
echo json_encode($data);
?>
从上面可以看到，它是一个简单的字符串比较脚本。我的默认值为123456，我只需要比较从HTML表单发布的字段的值是否与我在服务器端脚本中设置的默认值匹配。为什么我会有这个net::ERR_EMPTY_RESPONSE或XHR failed loading: POST
如果有人能指出我正确的道路，我将非常感激。因此我已经失去了睡眠。感谢您的所有答复和事先的支持。