Question

我有一个React + Node应用程序，我正在从React应用程序对节点层进行访存调用

fetch('/*', {
    method: "GET"
})
    .then(res => {
        return res.json()
    }).then(
        actualRes => {
            // SOME LOGIC
        }

节点层正在调用某个第三方api，现在的问题是，当我尝试调用此第三方api时，我遇到了CORS问题。

确切错误：

从原点“ https://localhost:8443/”到“ <3RD PARTY URL>”（从“ https://localhost:8443”重定向）的访问已被CORS策略阻止：没有“ Access-Control-Allow-Origin”标头出现在请求的资源上。如果不透明的响应满足您的需求，请将请求的模式设置为“ no-cors”以在禁用CORS的情况下获取资源。

我尝试在节点层中添加cors标头

即

app.use(function (req, res, next) {
        // Website you wish to allow to connect
        res.setHeader('Access-Control-Allow-Origin', 'https://localhost:8443/*');

        // Request methods you wish to allow
        res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');

        // Request headers you wish to allow
        res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');

        // 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();
    });

请求的资源上没有“ Access-Control-Allow-Origin”标头-REACT JS + NODE

0 个答案: