1. var detail = async ctx=>{
    2.     const cheerio = require("cheerio")
    3.     const axios = require("axios")
    4.     let {id} = ctx.request.params;
    5.     let url =`https://movie.douban.com/subject/${id}`
    6.     // console.log(id)
    7.     var html =await axios.get(url);
    8.     const $ = cheerio.load(html.data,{decodeEntities:false})
    9.     // console.log(html)
    10.     let items=$("#wrapper").find("#content");
    11.     let arr=[];
    12.         let title = $("#content").find("span[property='v:itemreviewed']").html();
    13.         let year = $("#content").find(".year").html();
    14.         let plot = $("#content").find("#info>span:nth-child(8)").html();
    15.         let criminal = $("#content").find("#info>span:nth-child(9)").html();
    16.         let toronto = $("#content").find("#info>span:nth-child(16)").html();;
    17.         let amer = "美国";
    18.         let pianchang = "片长:"
    19.         let time = $("#content").find("span[property='v:runtime']").html();
    20.         let rating = $("#content").find(".rating_num").html();
    21.         let comment = $("#content").find(".rating_people").text().replace(/[^\d]/g,"");
    22.         let jianjie = $("#content").find("span[property='v:summary']").html().replace(/[\n]/g,"").trim();
    23.         let yanyuan = $("#content").find(".celebrities-list li");
    24.         let play = [];
    25.         arr.push({
    26.             title,year,plot,criminal,toronto,amer,pianchang,time,rating,comment,jianjie,play
    27.         })
    28.         yanyuan.each((index,value)=>{
    29.             let ppic = $(value).find("a").attr("href");
    30.             let pname = $(value).find("a").attr("title");
    31.             let role = $(value).find("div .role").html();
    32.             play.push({
    33.                 ppic,pname,role
    34.             })
    35.         })
    36.     ctx.body = {
    37.         result:arr
    38.     }
    39. }
    40. module.exports = detail;
    1. const koa = require("koa");
    2. const app =  new koa;
    3. const router  =  require("koa-router")();
    4. const cors = require("koa2-cors");
    5. app.use(cors({origin:"*"}));
    6. router.get("/subject/:id",require("./try"))
    7. app.use(router.routes()).use(router.allowedMethods());
    8. app.listen(2000)