node.js - Webpack 开发服务器中 Twitter api 调用的 CORS 问题

Question

我在从 twitter api 获取响应时遇到问题(使用 npm 包 Twitter)。在 Chrome 中我得到:

Failed to load https://api.twitter.com/1.1/search/tweets.json?q=node.js: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:3000' is therefore not allowed access. The response had HTTP status code 400. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.

因此，我使用插件启用 CORS，错误更改为:

Failed to load https://api.twitter.com/1.1/search/tweets.json?q=node.js: Response for preflight has invalid HTTP status code 400.

我现在不知道该怎么办。我在 webpack.config.js 中尝试了几种不同的方法:

var path = require('path');
var webpack = require('webpack');
var Dotenv = require('dotenv-webpack');

module.exports = {
    devServer: {
        inline: true,
        historyApiFallback: true,
        contentBase: './src',
        port: 3000,
        headers: {
            "Access-Control-Allow-Origin": "*",
            "Access-Control-Allow-Headers": "Origin, X-Requested-With, Content-Type, Accept",
            "Access-Control-Allow-Credentials": "true",
            "Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS"
        },
        proxy: {
            "/api": "http://localhost:3000"
        }
    },
    devtool: 'cheap-module-eval-source-map',
    entry: './dev/js/index.js',
    module: {
        loaders: [
            {
                test: /\.js$/,
                loaders: ['babel'],
                exclude: /node_modules/
            },
            {
                test: /\.scss/,
                loader: 'style-loader!css-loader!sass-loader'
            },
            {
                loader: 'json-loader',
                test: /\.json$/ 
            }
        ]
    },
    output: {
        path: 'src',
        filename: 'js/bundle.min.js'
    },
    node: {
        console: false,
        fs: 'empty',
        net: 'empty',
        tls: 'empty'
    },
    plugins: [
        new webpack.optimize.OccurrenceOrderPlugin(),
        new Dotenv({
            path: './.env',
            safe: false
        })
    ]
};

这是我要调用的电话

import Twitter from 'twitter';

const client = new Twitter({
  consumer_key: process.env.TWITTER_CONSUMER_KEY,
  consumer_secret: process.env.TWITTER_CONSUMER_SECRET,
  bearer_token: process.env.TWITTER_BEARER_TOKEN
});

client.get('search/tweets', {q: 'node.js'}, function(error, tweets, response) {
   console.log(tweets);
});

我在 Firefox 中尝试了它并启用了 CORS 插件，但收到此错误:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://api.twitter.com/1.1/search/tweets.json?q=node.js. (Reason: CORS preflight channel did not succeed).

Answer 1

我只能想到一个解决方法:

• 使用 Chrome 扩展 Allow-Control-Allow-Origin
• 使用代理:不要访问 https://api.twitter.com/1.1/search/tweets.json?q=node.js，而是使用 https:/等代理/cors-anywhere.herokuapp.com/ 作为前缀:https://cors-anywhere.herokuapp.com/https://api.twitter.com/1.1/search/tweets.json? q=node.js