XMLHttpRequest 无法加载http://192.168.1.253:8080/... 不
请求中存在“Access-Control-Allow-Origin”标头
资源。起源 'http://本地主机:4200' 因此不允许
使用权。响应的 HTTP 状态代码为 401。
这是很常见的错误,有很多可能的解决方案都不起作用。我理解(我认为)CORS 应该如何工作,并且我没有看到我的 HTTP 标头有任何问题,但它仍然不起作用
来自 Chrome:
Request URL:http://192.168.1.253:8080/...
Request Method:OPTIONS
Status Code:200 OK
Remote Address:192.168.1.253:8080
Referrer Policy:no-referrer-when-downgrade
Response Headers
Access-Control-Allow-Headers:x-requested-with,accept,content-
type,authorization
Access-Control-Allow-Methods:POST, GET, PUT, PATCH, OPTIONS, DELETE
Access-Control-Allow-Origin:*
Access-Control-Max-Age:3600
Allow:GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH
Cache-Control:no-cache, no-store, max-age=0, must-revalidate
Connection:keep-alive
Content-Length:0
Date:Mon, 15 May 2017 21:50:55 GMT
Expires:0
Pragma:no-cache
Server:...
X-Content-Type-Options:nosniff
X-Frame-Options:DENY
X-XSS-Protection:1; mode=block
Request Headers
Accept:*/*
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-US,en;q=0.8
Access-Control-Request-Headers:authorization,content-type
Access-Control-Request-Method:GET
Cache-Control:no-cache
Connection:keep-alive
Host:192.168.1.253:8080
Origin:http://localhost:4200
Pragma:no-cache
Referer:http://localhost:4200/...
User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36
我的理解是OPTIONS
响应需要Access-Control-Allow-Origin
标头设置并允许方法类型和标头值,它确实如此
下面的相关角度。我已经对标题中的各种不同内容进行了相当多的不同组合,但没有任何效果
private getObject<T>(path: string): Promise<T> {
return this.http.get(SERVER_URL + path, this.authenticationToken())
.toPromise()
.then(response => response.json() as T)
.catch(this.handleError);
}
private authenticationToken() : RequestOptions {
let login = JSON.parse(sessionStorage.getItem('currentLogin'));
if (login && login.authenticationToken) {
let headers = new Headers({
'Authorization': 'Basic ' + login.authenticationToken,
'Content-type': 'application/json',
});
return new RequestOptions({ headers: headers });
}
}
我感觉我错过了一些明显的东西,但这让我发疯,任何帮助都是值得赞赏的。请注意,这确实适用于预先存在的 Ember 应用程序,所以我不认为它是服务器