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Express の CORS 対応

Last updated at Posted at 2022-04-17

こちらで作成したサーバーを CORS に対応させます。

必要なライブラリーのインストール

sudo npm install -g cors

フォルダー構造

$ tree
.
├── app.js
└── routes
    └── index.js

app.js のみ書き換えます。

app.js
//-------------------------------------------------------------------------
//	app.js
//
//					Apr/17/2022
//-------------------------------------------------------------------------
'use strict'

const express = require('express')
const routes = require('./routes')
const bodyParser = require("body-parser")
const cfenv = require('cfenv')
const cors = require('cors')		// 追加

var app = express()
app.use(cors())		// 追加
app.use(bodyParser.urlencoded({ extended: true }))
app.use(bodyParser.json())

app.use(express.static(__dirname + '/public'))

const appEnv = cfenv.getAppEnv()

app.post('/post_test',routes.post_test)

app.listen(appEnv.port, '0.0.0.0', function() {
  console.log("server starting on " + appEnv.url)
})

//-------------------------------------------------------------------------
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