使用自定義Content-type的jQuery CORS發送AJAX正文請求時遇到問題。這是我的代碼：$.ajax({  url: "http://some-other-domain/my-path",  type: "POST",  contentType: "application/json",  dataType: "json",  data: JSON.stringify({    key: 1,    key2: 2  }),  statusCode: {    200: function(data) {    }  },  xhrFields: {    withCredentials: true  },  crossDomain: true});我需要將Content-type設置為“ application / json”，因為它需要服務器端。但是jQuery并非以POST形式發送請求，而是以OPTIONS形式發送請求。這是標題：響應標題：HTTP/1.1 200 OKServer: Apache-Coyote/1.1Pragma: No-cacheCache-Control: no-cacheExpires: Thu, 01 Jan 1970 03:00:00 EETSet-Cookie: JSESSIONID=BB9D6783E58FB0F2ADE1924A2F0CBA52; Path=/Content-Type: text/html;charset=UTF-8Content-Length: 6233Date: Fri, 07 Sep 2012 14:41:13 GMT請求標頭：OPTIONS /my-path HTTP/1.1Host: MY-HOME-NAMEUser-Agent: MY_USER_AGEMTAccept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8Accept-Language: en-us,en;q=0.5Accept-Encoding: gzip, deflateConnection: keep-aliveOrigin: HERE-GOES-DOMAINAccess-Control-Request-Method: POSTAccess-Control-Request-Headers: content-typePragma: no-cacheCache-Control: no-cacheCORS運作良好，所有必需的標頭均由服務器發送，但如果按OPTIONS類型發送，則不能。是jQuery問題嗎？jQuery-1.8.1