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  • 初入koa2 -起步

    新手起步可以参考

    http://www.jianshu.com/p/6b816c609669

    安装完后app.js大概是这样的,其中一些插件是我另外安装的

    const Koa = require('koa')
    const views = require('koa-views')
    const json = require('koa-json')
    const onerror = require('koa-onerror')
    const bodyparser = require('koa-bodyparser')
    const logger = require('koa-logger')
    const cors = require('koa2-cors');
    const index = require('./routes/index')
    const users = require('./routes/users')
    
    const app = new Koa()
    // error handler
    onerror(app)
    //跨域插件
    app.use(cors())
    // middlewares
    app.use(bodyparser({
      enableTypes:['json', 'form', 'text']
    }))
    app.use(json())
    app.use(logger())
    //静态文件引用
    app.use(require('koa-static')(__dirname + '/public'))
    //模板,pug后缀
    app.use(views(__dirname + '/views', {
      extension: 'pug'
    }))
    
    // logger
    app.use(async (ctx, next) => {
      const start = new Date()
      await next()
      const ms = new Date() - start
      console.log(`${ctx.method} ${ctx.url} - ${ms}ms`)
    })
    
    // routes
    // allowedMethods()当前接口运行的methods
    app.use(index.routes(), index.allowedMethods())
    app.use(users.routes(), users.allowedMethods())
    
    // error-handling
    app.on('error', (err, ctx) => {
      console.error('server error', err, ctx)
    });
    
    module.exports = app

      

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  • 原文地址:https://www.cnblogs.com/SharkChilli/p/8078773.html
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