爬虫很火？让你摆脱信息焦虑症！

前端

2024-01-23 16:34:20

构建自己的热榜聚合站：前端工具指南

前言

网络上充斥着信息，而爬虫近年来备受关注，为我们提供了收集和聚合这些信息的手段。本指南将带你踏上构建自己的热榜聚合站的旅程，让你摆脱繁琐的应用程序，享受无干扰的信息流体验。

准备工作

在开始之前，请确保你的计算机已安装以下工具：

Node.js
npm
React
Redux

入门

创建 React 项目

npx create-react-app my-app

安装依赖项

cd my-app
npm install axios react-redux redux

构建聚合站

1. 热点列表组件

import React from "react";
import { useSelector } from "react-redux";

const HotList = () => {
  const hotList = useSelector((state) => state.hotList);

  return (
    <ul>
      {hotList.map((item) => (
        <li key={item.id}>{item.title}</li>
      ))}
    </ul>
  );
};

export default HotList;

2. 热点列表存储

import { createSlice } from "@reduxjs/toolkit";

const initialState = [];

const hotListSlice = createSlice({
  name: "hotList",
  initialState,
  reducers: {
    setHotList: (state, action) => {
      return action.payload;
    },
  },
});

export const { setHotList } = hotListSlice.actions;

export default hotListSlice.reducer;

3. 应用程序

import React, { useEffect } from "react";
import HotList from "./HotList";
import { useDispatch, useSelector } from "react-redux";
import { setHotList } from "./hotListSlice";
import axios from "axios";

const App = () => {
  const dispatch = useDispatch();
  const hotList = useSelector((state) => state.hotList);

  useEffect(() => {
    const fetchHotList = async () => {
      const response = await axios.get("https://example.com/api/hotlist");
      dispatch(setHotList(response.data));
    };

    fetchHotList();
  }, []);

  return (
    <div>
      <h1>热点列表</h1>
      <HotList />
    </div>
  );
};

export default App;