koa1配合mongoose实现异步返回数据

Question

问题描述

版本：koa@1.2.2，mongoose@5.4.1

请求/test，查询并返回的doc是有信息的，但前端老是提示接口404，是不是要异步返回数据库查询的数据，但不知道怎么写，求解答

//server.js
let koa = require('koa');
let app = new koa();
let koa_router = require('koa-router');
let router = new koa_router();
let koaBd = require('koa-body');
let koaBody = new koaBd();

// mongoose操作
let mongoose = require('mongoose');
let Store = require('./models/store');

//连接MongoDB数据库
mongoose.connect('mongodb://admin:admin@localhost:27017/test',{useNewUrlParser: true});

mongoose.connection.on("connected", function () {
  console.log("MongoDB connected success.")
});

mongoose.connection.on("error", function () {
  console.log("MongoDB connected fail.")
});

mongoose.connection.on("disconnected", function () {
  console.log("MongoDB connected disconnected.")
});

// 获取动效库列表
router.get('/test', function* (next) {
    var _this = this;

    var resData = {}

    Store.find({},(err,doc)=>{
        if(err){
            console.log('error')
        }else{
            _this.body = {
                list:doc
            };
        }
    });
});

app.use(router.routes()).use(router.allowedMethods());
app.listen(3001);

console.log('listen at http://localhost:3001');
console.log('--------数据服务启动成功--------');

//./models/store.js
let mongoose = require('mongoose');
let Schema = mongoose.Schema;

let storeSchema = new Schema({
    "name": String,
    "detail": String,
})

module.exports = mongoose.model('Store',storeSchema);