Angular客户端启用CORS [英] Angular client enable CORS

问题描述

CORS在服务器上可以正常使用，并且可以正常工作.我尝试使用角度HTTPClient将请求发送到服务器的REST API，但收到了CORS错误. 如果在服务器上启用了CORS，为什么这是一个错误?对客户来说还可以吗?

CORS is fine on server and works as intended. I tried sending requests to my server's REST API with the angular HTTPClient and I receive a CORS error. Why is this an error if CORS is enabled on the server? Shouldn't it be fine on the client?

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:3000/api/blah/blah (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

如何在此请求上启用CORS......

How can I enable CORS on this request please.....

推荐答案

为了将来起见，是戴维斯"答案为我提供了帮助，在所有布线之前都未添加cors.

For future refrence it was "Davids" answer that assisted me, the cors was not added before all routing.

".....含义，在定义路由之前." 所以...之后 var app = express();

"..... Meaning, before the route is defined." so right after ... var app = express();

我只是用... app.use(cors());

I just use... app.use(cors());

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