router.js

router.get('/plist',initMiddleware, controller.default.product.list);

controller.js

app/controller/default/product.js

'use strict';const Controller = require('egg').Controller;class ProductController extends Controller {  async list() {    var cid=this.ctx.request.query.cid;    //根据分类id获取当前的分类新    var curentCate=await this.ctx.model.GoodsCate.find({"_id":cid});    console.log(JSON.stringify(curentCate))    //判断是否是顶级分类    if(curentCate[0].pid!=0){        // 二级分类        var goodsList=await this.ctx.model.Goods.find({"cate_id":cid},'_id title price sub_title goods_img shop_price');        console.log(goodsList);    }else{          //顶级分类  获取当前顶级分类下面的所有的子分类          var subCatesIds=await this.ctx.model.GoodsCate.find({"pid":this.app.mongoose.Types.ObjectId(cid)},'_id');                  var tempArr=[];          for(var i=0;i

view

app/view/default/index.html

<%=goodsCate[i].title%>

app/view/default/product_list.html

<% include  ./public/header.html%>
    
    <% include  ./public/banner.html%>
        
            
    
                        
     
      小米手机
     
            
     
                      <%for(var i=0;i
                          
       
                        
        
                                                        
                                                         
        
                        
        
         <%=goodsList[i].title%>
        
                                                
        
         <%=goodsList[i].shop_price%>元
        
                    
       
                <%}%>                        
      
     
                                
    
                
        
        

效果