跨域请求的几个文章

1.跨域资源共享 CORS 

https://www.cnblogs.com/keyi/p/6726089.html

jquery ajax 设置请求头header 参数

https://www.cnblogs.com/jjSmileEveryDay/p/9636165.html

ajax请求添加自定义header参数

https://www.baidu.com/link?url=hyw15WHHl_9wvtSvR7caT-U2qs8Jmw9bPaX9m_lGlFsns9eckMnbhAs7Y6ZhhxIBQzBCw4WaOlW9HK9PhozVBgj4R_XVQQqolvjQyES7Cc7&wd=&eqid=b223b4940012d2bc000000035cb969a5