nodejs 搭建简易服务器

Posted 2020-09-28 Jade_g

www文件夹下

template文件夹下

server.js代码：

const express=require(\'express\');
const static=require(\'express-static\'); //托管静态文件
const cookieParser=require(\'cookie-parser\');　　//解析cookie
const cookieSession=require(\'cookie-session\');　　//解析session
const bodyParser=require(\'body-parser\');　　　　//解析post数据
const multer=require(\'multer\');
const consolidate=require(\'consolidate\');
const mysql=require(\'mysql\');

//连接池
const db=mysql.createPool({host: \'localhost\', user: \'root\', password: \'123456\', database: \'blog\'});

var server=express();
server.listen(8080);

//1.解析cookie
server.use(cookieParser(\'sdfasl43kjoifguokn4lkhoifo4k3\'));

//2.使用session
var arr=[];
for(var i=0;i<100000;i++){
  arr.push(\'keys_\'+Math.random());
}
server.use(cookieSession({name: \'zns_sess_id\', keys: arr, maxAge: 20*3600*1000}));

//3.post数据
server.use(bodyParser.urlencoded({extended: false}));
server.use(multer({dest: \'./www/upload\'}).any());

//4.配置模板引擎
//输出什么东西
server.set(\'view engine\', \'html\');
//模板文件放在哪儿
server.set(\'views\', \'./template\');
//哪种模板引擎
server.engine(\'html\', consolidate.ejs);

//接收用户请求
server.get(\'/\', (req, res, next)=>{
  //查询banner的东西
  db.query("SELECT * FROM banner_table", (err, data)=>{
    if(err){
      res.status(500).send(\'database error\').end();
    }else{
      res.banners=data;

      next();
    }
  });
});
server.get(\'/\', (req, res, next)=>{
  //查询文章列表
  db.query(\'SELECT ID,title,summery FROM article_table\', (err, data)=>{
    if(err){
      res.status(500).send(\'database error\').end();
    }else{
      res.articles=data;

      next();
    }
  });
});
server.get(\'/\', (req, res)=>{
  res.render(\'index.ejs\', {banners: res.banners, articles: res.articles});
});

server.get(\'/article\', (req, res)=>{
  res.render(\'conText.ejs\', {});
});



//4.static数据
server.use(static(\'./www\'));

 index.ejs代码：

<div class="content">
    <div class="banner">
      <ul class="clearfix">
        <% for(var i=0;i<banners.length;i++){ %>
        <li>
          <img src="<%= banners[i].src %>" alt=""/>
          <div class="text-box">
            <h2><%= banners[i].title %></h2>
            <p><%= banners[i].sub_title %></p>
          </div>
        </li>
        <% } %>
      </ul>
      <ol>
          <li class="active"></li>
          <li></li>
          <li></li>
      </ol>
    </div>
    <div class="newsList">
      <ul>
        <% for(var i=0;i<articles.length;i++){ %>
        <li>
          <a href="/article?id=<%= articles[i].ID %>">
            <h2><%= articles[i].title %></h2>
            <p><%= articles[i].summery %></p>
          </a>
        </li>
        <% } %>
      </ul>
    </div>
</div>