koa 中获取 post 提交数据

原生 NodeJS 获取 post 提交的数据

request.js

exports.getPostData=function(ctx){
    return new Promise((resolve,reject)=>{
       try {
           let params = '';
           ctx.req.on('data', (chunk) => {
               params += chunk;
           })
           ctx.req.on('end', (chunk) => {
               resolve(params)
           })
       } catch (error) {
           console.log("获取post提交的数据错误")
           reject(error)
       }
    })
}

app.js

const Koa = require('koa')
const app = new Koa()
const router = require('koa-router')()
const views = require('koa-views')
const ejs = require('ejs')
const request = require('./utils/request')

//应用ejs模板引擎
app.use(views('views',{
    extension:'ejs'
}))

router.get('/register',async (ctx)=>{
    console.log("注册页")
    await ctx.render('register')
})

router.post('/doRegister',async (ctx)=>{
    let data = await request.getPostData(ctx)
    console.log("注册页提交的数据是：", data) //userName=admin&password=123
    ctx.body=data
})

app.use(router.routes());  
app.use(router.allowedMethods());
app.listen(3000);

 

使用 koa-bodyparser 中间件获取提交数据

https://www.npmjs.com/package/koa-bodyparser

npm install --save koa-bodyparser

 

const Koa = require('koa')
const app = new Koa()
const router = require('koa-router')()
const views = require('koa-views')
const ejs = require('ejs')
const bodyParser = require('koa-bodyparser')

//应用ejs模板引擎
app.use(views('views',{
    extension:'ejs'
}))

//配置 bodyParsey中间件
app.use(bodyParser())


router.get('/register',async (ctx)=>{
    console.log("注册页")
    await ctx.render('register')
})

router.post('/doRegister',async (ctx)=>{
    let data = ctx.request.body
    console.log("注册页提交的数据是：", data) //{"userName":"admin","password":"123"}
    ctx.body=data
})

app.use(router.routes());  
app.use(router.allowedMethods());
app.listen(3000);