问题描述
我在我的网站上实现了一个 Ajax 请求,我正在从网页调用端点.它总是返回 200 OK,但 jQuery 会执行错误事件.
我尝试了很多东西,但我无法弄清楚问题所在.我在下面添加我的代码:
I have implemented an Ajax request on my website, and I am calling the endpoint from a webpage. It always returns 200 OK, but jQuery executes the error event.
I tried a lot of things, but I could not figure out the problem. I am adding my code below:
var row = "1";
var json = "{'TwitterId':'" + row + "'}";
$.ajax({
type: 'POST',
url: 'Jqueryoperation.aspx?Operation=DeleteRow',
contentType: 'application/json; charset=utf-8',
data: json,
dataType: 'json',
cache: false,
success: AjaxSucceeded,
error: AjaxFailed
});
function AjaxSucceeded(result) {
alert("hello");
alert(result.d);
}
function AjaxFailed(result) {
alert("hello1");
alert(result.status + ' ' + result.statusText);
}
JqueryOpeartion.aspx
的 C# 代码C# code for JqueryOpeartion.aspx
protected void Page_Load(object sender, EventArgs e) {
test();
}
private void test() {
Response.Write("<script language='javascript'>alert('Record Deleted');</script>");
}
我需要成功删除后的 ("Record deleted")
字符串.我可以删除内容,但没有收到此消息.这是正确的还是我做错了什么?解决此问题的正确方法是什么?
I need the ("Record deleted")
string after successful deletion. I am able to delete the content, but I am not getting this message. Is this correct or am I doing anything wrong? What is the correct way to solve this issue?
推荐答案
jQuery.ajax
尝试根据指定的 dataType
参数或服务器发送的 Content-Type
标头转换响应正文.如果转换失败(例如,如果 JSON/XML 无效),则会触发错误回调.
jQuery.ajax
attempts to convert the response body depending on the specified dataType
parameter or the Content-Type
header sent by the server. If the conversion fails (e.g. if the JSON/XML is invalid), the error callback is fired.
您的 AJAX 代码包含:
Your AJAX code contains:
dataType: "json"
在这种情况下 jQuery:
In this case jQuery:
将响应计算为 JSON 并返回一个 JavaScript 对象.[…]JSON 数据以严格的方式解析;任何格式错误的 JSON 都是被拒绝并抛出解析错误.[...] 空响应也是拒绝了;服务器应改为返回 null 或 {} 响应.
您的服务器端代码返回状态为 200 OK
的 HTML 片段.jQuery 期待有效的 JSON,因此会触发错误回调,抱怨 parseerror
.
Your server-side code returns HTML snippet with 200 OK
status. jQuery was expecting valid JSON and therefore fires the error callback complaining about parseerror
.
解决方案是从您的 jQuery 代码中删除 dataType
参数并使服务器端代码返回:
The solution is to remove the dataType
parameter from your jQuery code and make the server-side code return:
Content-Type: application/javascript
alert("Record Deleted");
但我更愿意建议返回 JSON 响应并在成功回调中显示消息:
But I would rather suggest returning a JSON response and display the message inside the success callback:
Content-Type: application/json
{"message": "Record deleted"}
这篇关于Ajax 请求返回 200 OK,但会触发错误事件而不是成功的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!