post 请求,headers里有属性(xxx).请求时报错: XMLHttpRequest cannot load <url>. Request header field xxx is not allowed by Access-Control-Allow-Headers in preflight response. 解决:在后端的Access-Control-Allow-Headers里,添加该 field.…

今天遇到一个跨域问题记录学习下: 一.问题: 跨域请求中包含自定义header字段时,浏览器console报错. Request header field xfilesize is not allowed by Access-Control-Allow-Headers 二.原因: 包含自定义header字段的跨域请求,浏览器会先向服务器发送OPTIONS请求,探测该服务器是否允许自定义的跨域字段. 如果允许,则继续实际的POST/GET正常请求,否则,返回标题所示错误. OPTIONS请求: R…

axios 加入header之后,请求出现 Failed to load http://localhost:8080/team.php: Request header field x-jwt-header is not allowed by Access-Control-Allow-Headers in preflight response. //POST传参序列化(添加请求拦截器) axios.interceptors.request.use(config => { config.header…

FAQ: Failed to load http://www.erpshop.com/index.php: Request header field Content-Type is not allowed by Access-Control-Allow-Headers in preflight response. 解决方案: ajax请求时,加上对服务器请求数据格式的限制: contentType : "application/x-www-form-urlencoded" //发送给服…

在做项目时,用到axios,数据用post提交时,老是报错,错误提示为: Access to XMLHttpRequest at 'http://127.0.0.1:3000/api/add' from origin 'http://localhost:8080' has been blocked by CORS policy: Request header field content-type is not allowed by Access-Control-Allow-Headers in…

问题描述: 由于restful接口需要在头部header传递两个字段: Content-Type: application/jsonAccess-Token: 84c6635800b14e0eba4f7ece65e095a1 但是,在vue.js里面配置: 执行发送的时候出现: 意思是预发请求的时候不通过,不再正式发请求 经过反复的测试,发现,header里面包含自定义字段,浏览器是会先发一次options请求,如果请求通过,则继续发送正式的post请求,而如果不通过则返回以上错误 那这样就只能…

转载:https://www.cnblogs.com/caimuqing/p/6733405.html 问题描述: 由于restful接口需要在头部header传递两个字段: Content-Type: application/jsonAccess-Token: 84c6635800b14e0eba4f7ece65e095a1 但是,在vue.js里面配置: 执行发送的时候出现: // TODO 支持跨域访问 response.setHeader("Access-Control-Allow-Or…

https://www.cnblogs.com/caimuqing/p/6733405.html // TODO 支持跨域访问 response.setHeader("Access-Control-Allow-Origin", "*"); response.setHeader("Access-Control-Allow-Credentials", "true"); response.setHeader("Access…

跨域问题报错信息为:Failed to load http://192.168.30.119: Request header field language is not allowed by Access-Control-Allow-Headers in preflight response. 原因:前台发送的请求体包含了没有允许的Header 如何解决问题:在请求体加入允许的Header类型 原有代码: response.setHeader(“Access-Control-Allow-Head…

用了cms 发现这玩意真不好,老是有各种奇芭的问题跳出来 有时浏览网页时会出现 Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. 意思为:错误的请求.您的浏览器发送一个请求,该服务器无法理解.一个请求头域的大小超过服务器的限制. 以下是解决方法,不过,我个人感觉,不可能无限制的增大请求…