Question

我尝试对特定ID进行响应。取而代之的是，我在控制台上无法找到...

例如，如果我要冲浪=> http://localhost:3005/api/books/1，则需要查看第一本书的详细信息： {id：1，作者：“或”，价格：250}

我可以寻求帮助吗？

const express = require("express");
const server = express();

const books = [
  { id: 1, author: "Or", price: 250 },
  { id: 240, author: "Shay", price: 100 },
  { id: 3, author: "Hila", price: 70 },
];

server.get("/api/books", (request, response) => {
  response.json(books);
});

server.get("/api/books/:id", (request, response) => {
  const id = +request.param.id;
  const oneBook = books.find((b) => b.id === id);
  console.log(oneBook);
  response.json(oneBook);
});

server.listen(3005, () => console.log("Listening on http://localhost:3005"));

Answer 1

您有错字。

params，而不是param

Answer 2

我提前道歉，我的英语水平很差，所以我无法解释您错了，但这是解决您问题的代码

const express = require("express");
const server = express();
const books = [
  { id: 1, author: "Or", price: 250 },
  { id: 240, author: "Shay", price: 100 },
  { id: 3, author: "Hila", price: 70 },
];

server.get("/api/books", (request, response) => {
  response.json(books);
});

server.get("/api/books/:id", (request, response) => {
  const { id } = request.params
  const oneBook = books.filter(
    item => item.id === (+id)
  )
  console.log(oneBook);
  response.json(oneBook);
});

server.listen(3005, () => console.log("Listening on http://localhost:3005"));

无法从节点js服务器获取对象

2 个答案: