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app.use(function (req, res, next) {
// Website you wish to allow to connect
res.setHeader('Access-Control-Allow-Origin', 'http://localhost:8100');
// Request headers you wish to allow
res.setHeader('Access-Control-Allow-Headers', '*');
// Set to true if you need the website to include cookies in the requests sent
// to the API (e.g. in case you use sessions)
res.setHeader('Access-Control-Allow-Credentials', true);
// Pass to next layer of middleware
next();
});
我用郵差一切工作正常,但我的測試,它運行在http://localhost:8100離子的應用程序時,我得到CORS問題。我google搜索並設法找到上述集頭解決方案,但現在我得到這個錯誤:CORS問題node.js中失敗
Request header field owner is not allowed by Access-Control-Allow-Headers in preflight response.
任何想法?
「[該'接入控制允許Headers'頭不允許通配符。](http://stackoverflow.com/questions/13146892/cors-access-control-allow-headers-wildcard-被忽略)「 –
@JonathanLonowski,我應該改變哪一部分? –
除了[「簡單的頭文件」](https://fetch.spec.whatwg.org/#simple-header),你必須準確地列出哪些頭文件應該被允許 - 例如''Owner,X-Requested用''代替'*'。 –