我已安装了Node.js,现在想运行一些模拟API。
index.js:
const app = require('koa')()
const cors = require('koa-cors')
const logger = require('koa-logger')
const router = require('koa-router')()
function getRandomInt(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min)) + min;
}
function getRandomDeliveryLocation() {
let locs = [
{ lat: 22.319181, lng: 114.170008, address: 'Mong Kok' },
{ lat: 22.336093, lng: 114.155288, address: 'Cheung Sha Wan' },
{ lat: 22.335538, lng: 114.176169, address: 'Kowloon Tong' }
]
return locs[ getRandomInt( 0, locs.length ) ]
}
function getRandomDeliveryDescription( index ) {
if ( index % 3 === 0 ) {
return 'Deliver documents to Andrio'
}
let desp = [
'Deliver documents to Andrio',
'Gift pets to Leviero',
'Gift pets to Alan'
]
return desp[ getRandomInt( 0, desp.length ) ]
}
function getRandomDeliveryItem( index ) {
return {
id: index,
description: getRandomDeliveryDescription( index ),
imageUrl: 'https://s3-ap-southeast-1.amazonaws.com/lalamove-mock-api/images/pet-'
+ getRandomInt( 0, 9 ) + '.jpeg',
location: getRandomDeliveryLocation()
}
}
function delay(sec) {
return new Promise(r => setTimeout(r, sec * 1000))
}
router.get('/pets', function* () {
let cap = 70
let offset = parseInt( this.query.offset, 10 )
let limit = parseInt( this.query.limit, 10 )
if ( isNaN( offset ) || isNaN( limit ) || offset < 0 || limit < 0 ) {
this.status = 400
return
}
yield delay(getRandomInt(0, 5))
if (!getRandomInt(0, 9)) {
this.status = 500
return
}
this.body = []
for ( let i = offset; i < offset + limit && i < cap; i++ ) {
this.body.push( getRandomDeliveryItem( i ) )
}
})
app
.use(logger())
.use(cors())
.use(router.routes())
.use(router.allowedMethods())
app.listen(8080)
console.log('Mock server started at port 8080')
我得到的是:
在打开 localhost:8080/pets 时出现了未找到错误。
我是否遗漏了什么内容?请问如何解决?
generator function
? - planet_hunter