首先，可以通过npm或者淘宝镜像cnpm全局安装epress框架，这里不具体说了
npm install -g express
npm install -g express-generator
新建一个项目
express -e xxx
目录说明：
bin：项目的启动文件，也可以放其他脚本。
node_modules：用来存放项目的依赖库。
public：用来存放静态文件(css,js,img)。
routes：路由控制器。
views：视图目录(相当于MVC中的V)。
app.js：项目入口及程序启动文件。
package.json：包描述文件及开发者信息。
-----------------------------------------------其他，自己创建使用------------------------------
actions：控制器,对请求的操作(相当于MVC中的C)。
plugs：数据库操作、邮件帮助等文件。
config：配置目录。
Dockerfile：做自动化部署的配置文件。
.gitignore：上传git的忽略文件配置。
README.md：项目说明文件。
app.js文件：
1 /**
2 * 应用程序的入口文件
3 */
4 //加载express模块
5 const express = require('express');
6 const bodyParser = require('body-parser');
7 const http = require('http');
8 const path = require('path');
9 const cookieParser = require('cookie-parser');
10 const api = require('./routes/api');
11 const logConfig = require('./logs/logconfig/logconfig');
12 const requestLogger = logConfig.getLogger();//根据需要获取logger
13 const loginFlag = require('./routes/checklogin');
14 const app = express();
15 //设置跨域访问
16 app.all('*', function (req, res, next) {
17 if(req.headers.origin) {
18 res.header("Access-Control-Allow-Origin", `${req.headers.origin}`);
19 } else {
20 res.header("Access-Control-Allow-Origin", `*`);
21 }
22 res.header('Access-Control-Allow-Methods', 'PUT, GET, POST, DELETE, OPTIONS');
23 res.header("Access-Control-Allow-Credentials", "true");
24 res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept,x-access-token, x-access-site");
25 res.header("Access-Control-Expose-Headers", "*");
26 if(req.method === "OPTIONS") {
27 return res.end();
28 }
29 next();
30 });
31 // view engine setup
32 app.set('views', path.join(__dirname, 'views'));
33 app.set('view engine', 'jade');
34 logConfig.useLogger(app, requestLogger);
35 app.use(express.json({limit: '50mb'}));
36 app.use(express.urlencoded({ limit: '50mb',extended: true }));
37 app.use(cookieParser());
38 app.use(express.static(path.join(__dirname, 'public')));
39
40 //MARK: 健康检查
41 app.get('/healthz', (req, res) => {
42 res.status(200).send({
43 error: false,
44 result: 'healthz working'
45 })
46 });
47
48 // //先检查是否登录
49 app.use('/api', (req, res, next) => {
50 loginFlag.authentication(req, res, next);
51 })
52
53 app.use('/api', api);
54
55 // catch 404 and forward to error handler
56 app.use(function (req, res, next) {
57 var err = new Error('Not Found');
58 err.status = 404;
59 next(err);
60 });
61
62 // error handler
63 app.use(function (err, req, res, next) {
64 // set locals, only providing error in development
65 res.locals.message = err.message;
66 res.locals.error = req.app.get('env') === 'development' ? err : {};
67
68 // render the error page
69 res.status(err.status || 500);
70 res.send('error');
71 });
72 module.exports = app;
routes部分重要代码：
1 const express = require('express');
2 const router = express.Router();
3 const Home=require('../action/home/home');
4
5 router.get('/v2/home/getactions',Home.GetActions);
6 router.post('/v2/home/deleteaction',Home.DeleteAction);
7 router.post('/v2/home/operationactions',Home.OperationActions);
8
9 module.exports = router;
actions部分重要代码：
1 const pSqlClientExecute = require('../../plugs/postgresqldb');
2 const Util = require('../../utils/utils');
3 const fs = require("fs");
4 const util = require("util");
5 const ejsexcel = require('../../download/ejsexcel');
6 const readFileAsync = util.promisify(fs.readFile);
7 const writeFileAsync = util.promisify(fs.writeFile);
8 const Home = {};
9
10 Home.GetBIChartsData = (req, res, next) => {
11 console.log('fatppis call api {/v2/home/getbichartsdata}')
12 let { DateTime,Shift_ID, Area,CustomerFamily_ID,OrderBy} = req.query;
13 if(CustomerFamily_ID==null||CustomerFamily_ID==undefined){
14 CustomerFamily_ID='';
15 }
16 let databaseFn = async function() {
17 let sqlList = `SELECT * FROM "sp_FOP_GetBIChartsData"('${DateTime}',${Shift_ID},'${Area}','${CustomerFamily_ID}','${OrderBy}')`;
18 let sqlListFn = await pSqlClientExecute(req,sqlList, []);
19 return sqlListFn;
20 }
21 databaseFn().then((data) => {
22 res.send({
23 status: 200,
24 data: data
25 });
26 })
27 .catch((error) => {
28 res.status(400).json({
29 msg: error.detail||error.message
30 })
31 });
32 }
package.json文件
1 {
2 "name": "server",
3 "version": "1.0.0",
4 "description": "",
5 "main": "app.js",
6 "scripts": {
7 "start": "node ./bin/www"
8 },
9 "author": "",
10 "license": "ISC",
11 "dependencies": {
12 "body-parser": "^1.18.2",
13 "cookie-parser": "~1.4.3",
14 "cookies": "^0.7.1",
15 "express": "^4.16.3",
16 "express-session": "^1.15.6",
17 "node-rest-client": "^3.1.0",
18 "path": "^0.12.7",
19 "pg": "^7.4.1",
20 "log4js": "^3.0.6"
21 }
22 }
项目源码链接：https://github.com/ZhijianPu/nodejsapidemo.git
来源：https://www.cnblogs.com/pzj1023/p/11743789.html