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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();
});
我用邮差一切工作正常,但我的测试,它运行在http://localhost:8100离子的应用程序时,我得到CORS问题。我google搜索并设法找到上述集头解决方案,但现在我得到这个错误:CORS问题node.js中失败
Request header field owner is not allowed by Access-Control-Allow-Headers in preflight response.
任何想法?
“[该'接入控制允许Headers'头不允许通配符。](http://stackoverflow.com/questions/13146892/cors-access-control-allow-headers-wildcard-被忽略)“ –
@JonathanLonowski,我应该改变哪一部分? –
除了[“简单的头文件”](https://fetch.spec.whatwg.org/#simple-header),你必须准确地列出哪些头文件应该被允许 - 例如''Owner,X-Requested用''代替'*'。 –