【发布时间】：2019-05-05 06:08:40
【问题描述】：
我无法让 AJAX 请求正常工作。从这个较早的线程看来，请求处理程序和注册处理程序的钩子不是问题：Wordpress: Ajax request logs 400 Bad Request to console
框架（wordpress）确实每分钟左右发送一个带有“heartbeat”k/v 对的 ajax 请求（到同一个目标）。我从下面的核心复制了我的错误请求和其中一个好的请求。突出的是我的 text/html 的响应标头。这会导致不好的 REQUEST 吗？如果不是还有什么可能导致它？
请求标头
// my bad request. Error code 400 "BAD REQUEST"
Request URL:http://localhost/wptest2/wp-admin/admin-ajax.php
Request method:POST
Remote address:127.0.0.1:80
Status code: 400
Version:HTTP/1.1
Response headers (177 B)
Raw headers
Connection close
Content-Length 165
Content-Type text/html; charset=UTF-8
Date Sun, 05 May 2019 04:58:48 GMT
Server Apache/2.4.29 (Ubuntu)
Request headers (1.030 KB)
Raw headers
Accept application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
Accept-Language en-US,en;q=0.5
Connection keep-alive
Content-Length 30
Content-Type application/json
Cookie wordpress_69cb7e12fdbb27dfb560…2-1ebb-4ab4-ba67-14f7be9e4c98
Host localhost
Referer http://localhost/wptest2/wp-ad…-general.php?page=fvc-settings
User-Agent Mozilla/5.0 (X11; Ubuntu; Linu…) Gecko/20100101 Firefox/66.0
X-Requested-With XMLHttpRequest
// A working request done automatically every minute or two by wordpress core
Request URL:http://localhost/wptest2/wp-admin/admin-ajax.php
Request method:POST
Remote address:127.0.0.1:80
Status code: 200
Version:HTTP/1.1
Response headers (605 B)
Raw headers
Cache-Control no-cache, must-revalidate, max-age=0
Connection Keep-Alive
Content-Length 423
Content-Type application/json; charset=UTF-8
Date Sun, 05 May 2019 04:59:46 GMT
Expires Wed, 11 Jan 1984 05:00:00 GMT
Keep-Alive timeout=5, max=100
Referrer-Policy strict-origin-when-cross-origin
Server Apache/2.4.29 (Ubuntu)
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-QM-overview-memory 7,444 kB
X-QM-overview-memory_usage 5.7% of 131,072 kB limit
X-QM-overview-time_taken 0.5868
X-QM-overview-time_usage 2.0% of 30s limit
X-Robots-Tag noindex
Request headers (1.062 KB)
Raw headers
Accept application/json, text/javascript, */*; q=0.01
Accept-Encoding gzip, deflate
Accept-Language en-US,en;q=0.5
Connection keep-alive
Content-Length 99
Content-Type application/x-www-form-urlencoded; charset=UTF-8
Cookie wordpress_69cb7e12fdbb27dfb560…2-1ebb-4ab4-ba67-14f7be9e4c98
Host localhost
Referer http://localhost/wptest2/wp-ad…-general.php?page=fvc-settings
User-Agent Mozilla/5.0 (X11; Ubuntu; Linu…) Gecko/20100101 Firefox/66.0
X-Requested-With XMLHttpRequest
Ajax 调用
当然，我一次只测试一个。
jQuery(document).ready(function() {
jQuery('#previousButton').click(function() {
jQuery.ajax({
type: "POST",
url: ajaxurl,
headers : {
'Content-Type' : 'application/json'
},
dataType: "json",
action: "selectTargetsWithOffset",
data: {
action: "selectTargetsWithOffset",
},
success: function() {
console.log(response, `=====response from $.ajax}=====`);
}
});
});
【问题讨论】：
-
您是说数据类型是 json 但您传递的数据不是有效的 json。
-
@CarlosAlvesJorge 的评论似乎有效。试试这个：
var data = { action: "selectTargetsWithOffset" };然后在ajax调用中使用这个：data: JSON.stringify(data)