https://stackoverflow.com/questions/7210507/ajax-post-error-refused-to-set-unsafe-header-connection/7210840 Remove these two lines: xmlHttp.setRequestHeader("Content-length", params.length); xmlHttp.setRequestHeader("Connection", "…
Refused to set unsafe header Refused to set unsafe header "Host"waitServerDeal @ tGet.html:82async function (async)waitServerDeal @ tGet.html:24uploadFile @ tGet.html:98onchange @ tGet.html:10tGet.html:83 Refused to set unsafe header "Conte…
最近在调试后端下载的接口时在浏览器的控制台中发现了红色的错误信息,例如Refused to get unsafe header "XXX":前端是采用XMLHttpRequest对象进行http请求和对响应数据的处理,在调用getResponseHeader('XXX')方法获取相关请求头XXX的值时就报上述错误了:这是为什么呢?因为后端是利用HttpServletResponse对象进行响应的,在响应请求头中添加自定义的请求头key值,如XXX,此时需要使用请求头Access-Con…
ajax请求node.js接口出现了如下的错误: XMLHttpRequest cannot load http://xxx.xxx.xx.xx:8888/getTem?cityId=110105&date=2015-03-04. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access. 百度了一下,原来是…