我正在尝试创建登录页面，当我转到localhost:5000时，我看到以下错误
Error: No default engine was specified and no extension was provided.
at new View (C:\docs\diplom\master3\node_modules\express\lib\view.js:61:11)
at Function.render (C:\docs\diplom\master3\node_modules\express\lib\application.js:587:12)
at ServerResponse.render (C:\docs\diplom\master3\node_modules\express\lib\response.js:1039:7)
at C:\docs\diplom\master3\index.js:9:36
at Layer.handle [as handle_request] (C:\docs\diplom\master3\node_modules\express\lib\router\layer.js:95:5)
at next (C:\docs\diplom\master3\node_modules\express\lib\router\route.js:144:13)
at Route.dispatch (C:\docs\diplom\master3\node_modules\express\lib\router\route.js:114:3)
at Layer.handle [as handle_request] (C:\docs\diplom\master3\node_modules\express\lib\router\layer.js:95:5)
at C:\docs\diplom\master3\node_modules\express\lib\router\index.js:284:15
at Function.process_params (C:\docs\diplom\master3\node_modules\express\lib\router\index.js:346:12)看起来错误在这里app.set("view_engine", "ejs"); app.set("views", "./views");，但我不明白哪里出了问题。例如，这是index.js
const express = require("express");
const db = require("./routes/db-config");
const app = express();
const cookie = require("cookie-parser");
const PORT = process.env.PORT || 5000;
app.use("./js", express.static(__dirname + "./public/js"));
app.use("./css", express.static(__dirname + "./public/css"));
app.set("view_engine", "ejs");
app.set("views", "./views");
app.use(cookie());
app.use(express.json());
db.connect((err)=> {
if(err) throw err;
});
app.use("/", require("./routes/pages"));
app.use("/api", require("./controllers/auth"));
app.listen(PORT);Pages.js
const express = require("express");
const router = express.Router();
router.get("/", (req, res) => {res.render("index");});
router.get("/register", (req, res) => {res.sendFile("register.html", {root: "./public"})});
router.get("/login", (req, res) => {res.sendFile("login.html", {root: "./public/"})});
module.exports = router;Db_config.js
const sql = require("mysql");
const db = sql.createConnection({
host: 'localhost',
user: 'root',
password: 'Moto01)!',
database: 'master'
});
module.exports = db;Auth.js
const express = require("express");
const register = require("./register");
const login = require("./login");
const logout =require("./logout");
const router = express.Router();
//router.post("/register", register);
//router.post("/login", login);
//router.post("/logout", logout);
module.exports = router;Index.ejs
<!DOCTYPE html>
<html lang ="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Home Page</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@3.4.1/dist/css/bootstrap.min.css"
integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<div class="container-fluid">
<a class="navbar-brand" href="#">Home page</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="/register">Register</a>
</li>
<li class="nav-item">
<a class="nav-link" href="/login">Login</a>
</li>
</ul>
</div>
</div>
</nav>
<div class="container my-5">
<div class="card" style="width: 100%">
<div class="card-body">
<h5 class="cardt-itle">Welcome</h5>
<h6 class="card-subtitle mb-2 text muted">Card subtitle</h6>
<p class="card-text"></p>
<button class="btn btn-primary"><a href="/login">Login</a></button>
<button class="btn btn-primary"><a href="/register">Register</a></button>
</div>
</div>
</div>
</body>我试着调查这个错误的其他案例，但没有一个对我起作用。这里出了什么问题？
1条答案
按热度按时间q8l4jmvw1#
您在
index.js文件中有一个错误，第八行：它应该是这样的：
参考自express和ejs网站，官方文件。