向支持 CORS 的 NGINX 服务器发出 AJAX 请求

Question

我正在尝试连接到 ReSTful API，为此我需要让服务器知道我有权这样做。我自己托管这个 ReST API，我使用 NGINX 作为反向代理。我已将 NGINX 配置为允许 CORS 请求（通过enable-cors）。为了便于使用，我决定使用 jQuery 来处理 AJAX 请求，并使用选项来发送我的凭据。

URL = "<url>"
$.ajax({
    url: URL,
    type: "GET",
    xhrFields: {
        withCredentials: true
    },
}).done(function(e) {
    console.log(e)
})

长话短说：我收到以下错误

Access to XMLHttpRequest at '<url>' from origin 'http://localhost:8000' has been blocked by CORS policy: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

我的NGINX配置如下：

add_header 'Access-Control-Allow-Credentials' 'true';
if ($request_method = 'OPTIONS') {
    add_header 'Access-Control-Allow-Origin' '*';
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    #
    # Custom headers and headers various browsers *should* be OK with but aren't
    #
    add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
    #
    # Tell client that this pre-flight info is valid for 20 days
    #
    add_header 'Access-Control-Max-Age' 1728000;
    add_header 'Content-Type' 'text/plain; charset=utf-8';
    add_header 'Content-Length' 0;
    return 204;
}
if ($request_method = 'POST') {
    add_header 'Access-Control-Allow-Origin' '*';
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
    add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
}
if ($request_method = 'GET') {
    add_header 'Access-Control-Allow-Origin' '*';
    add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
    add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
    add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
}

我知道我必须找到使用此通配符的解决方案，但是，在我工作的网络上，IP 地址经常出现。那么，来回答我的问题：做什么？

Answer 1

试试always;

add_header 'Access-Control-Allow-Origin' '*' always;
add_header 'Access-Control-Allow-Methods' 'GET, DELETE, OPTIONS' always;
add_header 'Access-Control-Allow-Headers' 'Authorization,Accept,Origin,DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range' always;