使用 express 尝试记录 url 参数，但它不会在控制台中记录任何内容

Question

当我在根URL的末尾键入/posts/whatever时，它不会将/posts后面的内容添加到console.log

app.get("/posts/:userId", function(req, res) {
console.log(req.params.userId);
});

编辑：这是完整的代码：

//jshint esversion:6
const express = require("express");
const bodyParser = require("body-parser");
const ejs = require("ejs");
const homeStartingContent = "Lacus vel facilisis volutpat est velit egestas dui id ornare. Semper auctor neque vitae tempus quam. Sit amet cursus sit amet dictum sit amet justo. Viverra tellus in hac habitasse. Imperdiet proin fermentum leo vel orci porta. Donec ultrices tincidunt arcu non sodales neque sodales ut. Mattis molestie a iaculis at erat pellentesque adipiscing. Magnis dis parturient montes nascetur ridiculus mus mauris vitae ultricies. Adipiscing elit ut aliquam purus sit amet luctus venenatis lectus. Ultrices vitae auctor eu augue ut lectus arcu bibendum at. Odio euismod lacinia at quis risus sed vulputate odio ut. Cursus mattis molestie a iaculis at erat pellentesque adipiscing.";
const aboutContent = "Hac habitasse platea dictumst vestibulum rhoncus est pellentesque. Dictumst vestibulum rhoncus est pellentesque elit ullamcorper. Non diam phasellus vestibulum lorem sed. Platea dictumst quisque sagittis purus sit. Egestas sed sed risus pretium quam vulputate dignissim suspendisse. Mauris in aliquam sem fringilla. Semper risus in hendrerit gravida rutrum quisque non tellus orci. Amet massa vitae tortor condimentum lacinia quis vel eros. Enim ut tellus elementum sagittis vitae. Mauris ultrices eros in cursus turpis massa tincidunt dui.";
const contactContent = "Scelerisque eleifend donec pretium vulputate sapien. Rhoncus urna neque viverra justo nec ultrices. Arcu dui vivamus arcu felis bibendum. Consectetur adipiscing elit duis tristique. Risus viverra adipiscing at in tellus integer feugiat. Sapien nec sagittis aliquam malesuada bibendum arcu vitae. Consequat interdum varius sit amet mattis. Iaculis nunc sed augue lacus. Interdum posuere lorem ipsum dolor sit amet consectetur adipiscing elit. Pulvinar elementum integer enim neque. Ultrices gravida dictum fusce ut placerat orci nulla. Mauris in aliquam sem fringilla ut morbi tincidunt. Tortor posuere ac ut consequat semper viverra nam libero.";
const app = express();
let posts = [];
app.set('view engine', 'ejs');
app.use(bodyParser.urlencoded({
extended: true
}));
app.use(express.static("public"));

app.get("/", function(req, res) {
res.render('home', {
startingContent: homeStartingContent,
posts: posts
});
});

app.get("/about", function(req, res) {
res.render('about', {
aboutContent: aboutContent
});
});
app.get("/contact", function(req, res) {
res.render('contact', {
contactContent: contactContent
});
});
app.get("/compose", function(req, res) {
res.render('compose');
});
app.post("/compose", function(req, res) {
const post = {
title: req.body.postTitle,
body: req.body.blogPost
};
posts.push(post);
res.redirect("/");
});
app.get("/posts/:userId", function(req, res) {
console.log(req.params.userId);
});
app.listen(3000, function() {
console.log("Server started on port 3000");
});

Answer 1

我尝试过在express中使用您的代码。而且它实际上工作得很好。你能不能把整个脚本发出来看看你哪里做错了。注意：如果您使用的是vscode ，则可以在终端中看到控制台日志

const express = require('express');
const app = express();

app.get('/', (req, res) => res.send('API Running'));
app.get('/posts/:userId', function (req, res) {
console.log(req.params.userId);
});
const PORT = process.env.PORT || 5000;
app.listen(PORT, () => console.log(`Server started on port ${PORT}`));