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  • express 设置允许跨域访问

    //demo
    const express = require('express');
    const app = express();
    //设置允许跨域访问该服务.
    
    app.all(’’, function (req, res, next) {
    
    res.header(‘Access-Control-Allow-Origin’, '’);
    
    //Access-Control-Allow-Headers ,可根据浏览器的F12查看,把对应的粘贴在这里就行
    
    res.header(‘Access-Control-Allow-Headers’, ‘Content-Type’);
    
    res.header(‘Access-Control-Allow-Methods’, ‘*’);
    
    res.header(‘Content-Type’, ‘application/json;charset=utf-8’);
    
    next();
    
    });
    
    
    app.get(’/hello’, function (req, res) {
    
    res.json({})
    
    });
    
    
    const server = app.listen(8082, function () {
    
    console.log(‘Express app server listening on port %d’, server.address().port);
    
    });
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  • 原文地址:https://www.cnblogs.com/mica/p/11162517.html
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