提示：学习express，搭建管理系统

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前言

需求：主要学习express，所以先写service部分

一、新建models/shop.js

models/shop.js

const query = require('../config/db');
const bcrypt = require('../config/bcrypt');
const md5 = require('md5');
const jwt = require('../config/jwt');
const secretKey = 'longlongago';const errFun = (msg,code)=>{return {code:code||500,success:false,msg:msg||'操作失败'}
}
const sucFun = (data,msg)=>{return {code:200,success:true,msg:msg||'操作成功',data,}
}
const shopDao = {//注册addShopByUserId:async(data)=>{//验证账号密码格式const validateResult =shopDao.validateShopName(data);if(!validateResult.success)return errFun(validateResult.msg);//查询商户名是否已存在const userResult = await shopDao.queryShopByShopName(data);if(userResult.success)return errFun('商户名已存在');//生成shopIdconst shopId = md5(data.shopName+secretKey);//根据shopName查询shopconst sql = `insert into shop (shopId,shopName,createId) values('${shopId}','${data.shopName}','${data.createId}')`;const result = await query(sql);if(result&&result.affectedRows==1)return sucFun({},'添加商户成功');return errFun('添加商户失败');},//通过商户名查询商户信息queryShopByShopName:async(data)=>{//根据shopName查询shopconst sql = `select * from shop where shopName='${data.shopName}'`;const result = await query(sql);if(result&&result.length>0)return sucFun(result[0],'查询商户成功');return errFun('查询商户失败');},//通过商户名查询商户信息queryShopByShopId:async(data)=>{//根据shopName查询shopconst sql = `select * from shop where shopName='${data.shopName}'`;const result = await query(sql);if(result&&result.length>0)return sucFun(result[0],'查询商户成功');return errFun('查询商户失败');},//验证商户名密码validateShopName:(data)=>{//只包含大小写字母数字,包含1种即可let nameReg = /[\da-zA-z]{6,16}$/;let nameValidate = nameReg.test(data.shopName);if(!nameValidate)return errFun('商户名格式错误');return sucFun({},'商户名格式正确');},
}module.exports = shopDao;

二、新建routes/shop.js

routes/shop.js

const shopDao = require('../models/shop');
const shopRoutes = (router)=>{router.post('/shop/addShopByUserId',async (req,res)=>{const result = await shopDao.addShopByUserId(req.body);res.json(result);});
}
module.exports = shopRoutes;

三、修改routes下的index.js

读取routes文件夹下的所有文件列表，过滤去掉index.js之后，引入并实例化剩余route
一劳永逸，不用每次添加route文件，都得修改index.js文件

const fs = require('fs');
const routes = (router)=>{const files = fs.readdirSync(__dirname)||[];files.forEach(item=>{if(item.indexOf('index')==-1)require(__dirname+'/'+item)(router);})
}module.exports = routes;

四、添加商户

url:http://localhost:1990/shop/addShopByUserId
name:/shop/addShopByUserId
params:{"shopName": "shop01","createId": "d9ef196010ee41be28ba70a0f819da9d"
}

params:{"shopName": "shop01","createId": "e9fd658aa2e171a3c145c4586d750b50"
}

总结

踩坑路漫漫长@~@