reactjs - 如何从 React 发送 CORS 请求？

Question

我在发送 header 中带有 token 的 CORS 请求时遇到问题。 获取代码:

fetchApi() {
    fetch('http://some-link.com',
    {
        headers: {
          'Accept': 'application/json',
          'auth-token': 'xxxxxxxxx'
        },
        method: "GET"
    }).then(response => response.json())
        .then(function(response){
            this.setState({hits:response});
        }).catch(function(error) { console.log(error); });

        console.log(this.state.hits);
};

控制台日志: 访问“http://some-link.com” '来自原产地' http://localhost:3000 ' 已被 CORS 策略阻止:预检响应中的 Access-Control-Allow-Headers 不允许请求 header 字段 auth-token。

网络请求日志:

General
Request URL: http://some-link.com
Request Method: OPTIONS
Status Code: 200 OK
Remote Address: some_ip:80
Referrer Policy: no-referrer-when-downgrade

Response Headers
Access-Control-Allow-Headers: origin, x-requested-with, content-type, auth_token
Access-Control-Allow-Methods: POST, GET, PUT, DELETE, OPTIONS
Access-Control-Allow-Origin: *
Cache-Control: no-cache, private
Connection: Keep-Alive
Content-Length: 8
Content-Type: application/json
Date: Tue, 13 Nov 2018 13:30:35 GMT
Keep-Alive: timeout=5, max=100
Server: Apache/2.4.10 (Debian)

Request Headers
Provisional headers are shown
Access-Control-Request-Headers: auth-token
Access-Control-Request-Method: GET
Origin: http://localhost:3000
Referer: http://localhost:3000/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36

任何想法可能是错误的？

Answer 1

您必须更改服务器设置以允许 header “auth-token”。

完成此操作后，您的请求就会生效。

您目前允许“auth_token”，而不是“auth-token”。

或者，在前端更改 header 名称，如下所示:

 headers: {
   'Accept': 'application/json',
   'auth_token': 'xxxxxxxxx'
 }