AJAX 调用中来自 php 的 JSON 响应

Question

我正在从 java 脚本进行 ajax 调用，并且尝试从 php 获取 json 响应，如果我将 dataType 设置为 JSON，则如果未执行成功块，则执行 ajax 错误块，如果我尝试 console.log，则不指定 dataType成功块中的响应我什么也没得到

JS

let CurrentDate = Date();
console.log(CurrentDate);

jsonObject = {
   'TrackName' : 'Material Science',
    'TrackDesc' : 'Test Text Test Text Test Text Test Text Test Text Test Text Test Text ',
    'Timestamp' : CurrentDate
}
console.log(jsonObject);
$.ajax({
    type:'post',
    url:'../../../../PHP/adminScripts/addNewTrack.php',
    contentType: "application/json",
    data: {trackDetails:jsonObject},
    dataType: "json",
    success: function(response) {
        console.log('SUCCESS BLOCK');
        console.log(response);
    },
    error: function(response) {
        console.log('ERROR BLOCK');
        console.log(response);
    }
});

PHP

<?php
header('Content-type: application/json');
include('../connection.php');

if($_POST) {
$obj = $_POST['trackDetails'];

$TrackName = mysql_real_escape_string($obj['TrackName']);
$TrackDesc = mysql_real_escape_string($obj['TrackDesc']);
$TrackAdderID = 'Admin ';                  //$_SESSION["userID"];
$Timestamp = mysql_real_escape_string($obj['Timestamp']);

$response_array['status'] = 'status123';
echo json_encode($response_array);

请帮我弄清楚如何在 PHP 中获取 ajax 调用的 json 响应

Answer 1

• 在你的 JS 文件中，删除contentType: "application/json",
• 在你的 php 文件中，检查“include file url”并
• 正确关闭 if 语句块

JS文件：

let CurrentDate = Date();
jsonObject = {
   'TrackName' : 'Material Science',
    'TrackDesc' : 'Test Text Test Text Test Text Test Text Test Text Test Text Test Text ',
    'Timestamp' : CurrentDate
}
$.ajax({
    type:'post',
    url:'addNewTrack.php',
    data: {trackDetails:jsonObject},
    dataType: "json",
    success: function(response) {
        console.log('SUCCESS BLOCK');
        console.log(response);
    },
    error: function(response) {
        console.log('ERROR BLOCK');
        console.log(response);
    }
});

PHP 文件：

<?php
    header('Content-type: application/json');
    include('../connection.php');

    if($_POST) {
        $obj = $_POST['trackDetails'];

        $TrackName = mysql_real_escape_string($obj['TrackName']);
        $TrackDesc = mysql_real_escape_string($obj['TrackDesc']);
        $TrackAdderID = 'Admin ';                  //$_SESSION["userID"];
        $Timestamp = mysql_real_escape_string($obj['Timestamp']);

        $response_array['status'] = 'status123';
        echo json_encode($response_array);
    }
?>