5分钟教你用nodeJS手写一个mock数据服务器的方法

const Koa = require('koa');
const app = new Koa();
app.listen(3000)

const Koa = require('koa');
const Router = require('koa-router');
 
const app = new Koa();
const router = new Router({prefix: '/api'});
 
router.get('/name', (ctx, next) => {
  ctx.body = {
    name: 'xuxiaoxi'
  }
 });
 
app
 .use(router.routes())
 .use(router.allowedMethods());
 
app.listen(3000)

const Koa = require('koa');
const Router = require('koa-router');
const glob = require("glob");
const { resolve } = require('path');
const fs = require('fs');
 
const app = new Koa();
const router = new Router({prefix: '/api'});
 
// 注册路由
glob.sync(resolve('./api', "**/*.json")).forEach((item, i) => {
  let apiJsonPath = item && item.split('/api')[1];
  let apiPath = apiJsonPath.replace('.json', '');
  
  router.get(apiPath, (ctx, next) => {
    try {
      let jsonStr = fs.readFileSync(item).toString();
      ctx.body = {
        data: JSON.parse(jsonStr),
        state: 200,
        type: 'success' // 自定义响应体
      }
    }catch(err) {
      ctx.throw('服务器错误', 500);
    }
   });
});
 
app
 .use(router.routes())
 .use(router.allowedMethods());
 
app.listen(3000);

const logger = require('koa-logger')
app.use(logger());

//...
const routerMap = {}; // 存放路由映射
 
// 注册路由
glob.sync(resolve('./api', "**/*.json")).forEach((item, i) => {
  // ...
  
  // 记录路由
  routerMap[apiJsonPath] = apiPath;
});
 
fs.writeFile('./routerMap.json', JSON.stringify(routerMap, null , 4), err => {
  if(!err) {
    console.log('路由地图生成成功！')
  }
});