我无法将数据发送到要处理的php文件。我已经尝试了几乎所有但是找不到问题的根源。下面是一个php文件,在用户点击 buy 按钮后,会向checkout
函数发送产品名称,价格和ID。
<?php
$servername = "localhost";
$username = "root";
$password = "root";
$dbname = "Test";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$sql = "SELECT P1.Product_Name, S2.Price, P1.Product_ID FROM Product P1, Sale_Item S2 WHERE P1.Product_ID=S2.Product_ID AND P1.Category='Sports'";
$res = $conn->query($sql);
$counter=0;
while ($row = $res->fetch_assoc()){
$Product_Name = $row["Product_Name"];
$Price = $row["Price"];
$Product_ID = $row["Product_ID"];
echo ('<td><p></p>'.$row["Product_Name"].'<br>'.$row["Price"].'<p></p><input type="button" value="Buy" onclick="checkout(\'' . $Product_Name . '\', \'' . $Price . '\', \'' . $Product_ID . '\')"</td>');
$counter++;
if ($counter==3) {
$counter=0;
print "<br>";
}
}
$conn->close();
?>
然后是checkout
函数:
<script type="text/javascript">
function checkout(Product_Name, Price, Product_ID) {
//document.write(Product_Name, Price, Product_ID)
var theProduct_Name = Product_Name;
var thePrice = Price;
var theProduct_ID = Product_ID;
$.ajax({
type: "POST",
url: "http://localhost:8888/checkout.php",
data: {Product_Name: theProduct_Name, Price: thePrice, Product_ID: theProduct_ID},
});
window.location.assign("http://localhost:8888/checkout.php")
}
</script>
我正在使用MAMP的phpMyAdmin数据库。我的网址不正确吗?我尝试过使用"http://localhost:8888/checkout.php"
和checkout.php
。下面是我需要处理数据的php文件。为了简单地学习如何发送数据,我只是回显文件内部以确保它实际发布。但没有任何回应。
<?php
session_start();
$servername = "localhost";
$username = "root";
$password = "root";
$dbname = "Test";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$theProduct_Name = $_POST['Product_Name'];
$theProduct_ID = $_POST['Product_ID'];
$thePrice = $_POST['Price'];
echo $theProduct_Name.$theProduct_ID.$thePrice;
?>
我是网络编程的新手,所以任何帮助或提示都会受到赞赏。我一直在看这几个小时,似乎无法让它发挥作用。
答案 0 :(得分:2)
使用Ajax时,请求由ajax发送,您可以在success方法中看到响应。对行动URL的任何直接调用都将发送新请求,在这种情况下该行为空
window.location.assign("http://localhost:8888/checkout.php")
删除那行代码,然后像下面那样更改你的jQuery.Ajax以查看响应的内容。
var request = $.ajax({
type: "POST",
url: "http://localhost:8888/checkout.php",
data: {Product_Name: theProduct_Name, Price: thePrice, Product_ID: theProduct_ID},
dataType: "html"
});
request.done(function(msg) {
alert ( "Response: " + msg );
});
request.fail(function(jqXHR, textStatus) {
alert( "Request failed: " + textStatus );
});
答案 1 :(得分:0)
您应该对代码进行以下更改
$.ajax({
method: "POST",
url: "http://localhost:8888/checkout.php",
data: {"Product_Name": "theProduct_Name", "Price": "thePrice", "Product_ID": "theProduct_ID"},
success : function(responseText)
{
alert('success to reach backend');
// you can console the responseText and do what ever you want with responseText
console.log(responseText);
},
error : function(jqXHR, status, error){
if (jqXHR.status === 0) {
alert('Not connected.\nPlease verify your network connection.');
} else if (jqXHR.status == 404) {
alert ('The requested page not found. [404]');
} else if (jqXHR.status == 500) {
alert ('Internal Server Error [500].');
} else if (exception === 'parsererror') {
alert ('Requested JSON parse failed.');
} else if (exception === 'timeout') {
alert ('Time out error.');
} else if (exception === 'abort') {
alert ('Ajax request aborted.');
} else {
alert ('Uncaught Error.\n' + jqXHR.responseText);
}
}
});
答案 2 :(得分:0)
您可以在浏览器控制台中跟踪ajax请求。它将向您显示请求和响应以及您从PHP脚本收到的错误。
如果单击按钮,则无法在控制台中看到任何请求,请尝试使用“方法”而不是“类型”。一些较旧的jquery版本不支持类型。 method: "POST",
答案 3 :(得分:0)
我测试了你的代码并且它工作正常,ajax请求正常发生,尝试从你的javascript代码中删除这一行。 window.location.assign(&#34; http://localhost:8888/checkout.php&#34);
我使用这个版本的jQuery:https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0-beta1/jquery.min.js
在Google Inspector的“网络”标签中,我得到了这个:
Request:
Request URL:http://localhost:8888/checkout.php
Request Method:POST
Status Code:200 OK
Remote Address:127.0.0.1:8888
Response:
Bike150