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Back resolve #3

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3ca2b23
后端解决
kang-git Sep 24, 2023
35ae79d
change readme
kang-git Sep 24, 2023
07c8155
Merge branch 'main' into backResolve
kang-git Sep 24, 2023
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14 changes: 14 additions & 0 deletions api-server/server.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,20 @@ const app = new Koa()
const KoaRouter = require('koa-router')
const router = new KoaRouter()

// 后台解决跨域响应头配置
app.use(async (ctx, next) => {
// 请求源白名单
const allowedOrigins = ['http://127.0.0.1:3000']
const requestOrigin = ctx.headers.origin
if(allowedOrigins.includes(requestOrigin)) {
ctx.set('Access-Control-Allow-Origin', requestOrigin)
ctx.set('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE')
ctx.set('Access-Control-Allow-Headers', 'Content-Type')
ctx.set('Access-Control-Allow-Credentials', 'true')
}
await next()
})

// api
router.post('/api/task', async (ctx, next) => {
ctx.status = 200
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2 changes: 1 addition & 1 deletion frontend/demo.html
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Expand Up @@ -15,7 +15,7 @@ <h5>响应</h5>
<script type="text/javascript">
const reqBtn = document.getElementById('requestBtn')
reqBtn.addEventListener('click', _ => {
// 3000端口的web页面去请求4000端口的api服务会跨域
// 后端配置对应响应头即可
axios.post('http://127.0.0.1:4000/api/task').then(res => {
console.log(res.data)
const resBox = document.getElementById('resBox')
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