在调试接口的时候发现Jquery Ajax怎么修改headers的Cookie都无法生效，于是得到了这个答案

另外还有一些也无法修改，下面是不能修改的项目的数组

var forbiddenRequestHeaders = [
    "accept-charset","accept-encoding","access-control-request-headers","access-control-request-method","connection","content-length","content-transfer-encoding","cookie","cookie2","date","expect","host","keep-alive","origin","referer","te","trailer","transfer-encoding","upgrade","via"   ];