# 六.案例
1.一个简易的服务器
let express = require("express");
let app = express();
app.listen("3000", () => {
console.log("已经成功连接3000端口");
});
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2.get请求
let express = require("express");
let app = express();
app.get("/", (req, res) => {
res.end("welcome to index");
});
app.get("/about", (req, res) => {
res.end("welcome to about");
});
app.listen("3000", () => {
console.log("你已经成功连接3000端口");
});
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3.post请求
let bodyParser = require("body-parser");
let express = require("express");
let app = express();
app.use(bodyParser.urlencoded({ extended: true }));
app.post("/login", (req, res) => {
console.log(req.body.username);
});
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