使用axios以及express框架进行数据传输
react脚手架中src文件配置如下:
App.js:
设置两个按钮,点击第一个获取学生数据,点击第二个获取汽车数据,值得注意的是这两个数据源在不同的服务器中
import React, { Component } from 'react'
import axios from "axios"
export default class App extends Component {
getStudentData = () => {
axios.get("http://localhost:3000/api1/students").then(
response => {console.log("成功了", response.data);},
error => {console.log("失败了", error);}
)
}
getCarData = () => {
axios.get("http://localhost:3000/api2/cars").then(
response => {console.log("成功了", response.data);},
error => {console.log("失败了", error);}
)
}
render() {
return (
<div>
<button onClick={this.getStudentData}>点我获取学生数据</button>
<button onClick={this.getCarData}>点我获取学生数据</button>
</div>
)
}
}
index.js:
脚手架入口文件
// 入口文件
//引入react核心库
import React from 'react';
//引入ReactDOM
import ReactDOM from 'react-dom/client'
//引入App组件
import App from "./App"
// import ReactDOM from 'react-dom/client'
const root = ReactDOM.createRoot(document.getElementById("root"))
root.render(<App/>)
server1.js:
服务器1的代码包含学生数据
const express = require('express')
const app = express()
app.use((request, response, next) => {
console.log("有人请求服务器1");
next();
})
app.get('/students', (request, response) => {
const students = [
{id:"001", name:"tom", age:18},
{id:"002", name:"jerry", age:18},
{id:"003", name:"tony", age:8},
]
response.send(students)
})
app.listen(5000, (err) => {
if(!err)console.log("服务器1启动成功,地址为http://localhost:5000/students")
})
server2.js
服务器2的内容,包含汽车的数据
const express = require('express')
const app = express()
app.use((request, response, next) => {
console.log("有人请求服务器2");
next();
})
app.get('/cars', (request, response) => {
const cars = [
{id:"001", name:"宝马", price:18},
{id:"002", name:"奔驰", price:18},
{id:"003", name:"保时捷", price:8},
]
response.send(cars)
})
app.listen(5001, (err) => {
if(!err)console.log("服务器2启动成功,地址为http://localhost:5001/cars")
})
setupProxy.js:
分别配置不同的代理(b站尚硅谷视频里那种运行不出来,版本更新了,下面这种目前可以跑出来)
const { createProxyMiddleware } = require('http-proxy-middleware')
module.exports = function (app) {
app.use(
createProxyMiddleware('/api1', {
//api1是需要转发的请求(所有带有/api1前缀的请求都会转发给5000)
target: 'http://localhost:5000', //配置转发目标地址(能返回数据的服务器地址)
changeOrigin: true, //控制服务器接收到的请求头中host字段的值
pathRewrite: { '^/api1': '' }, //去除请求前缀,保证交给后台服务器的是正常请求地址(必须配置)
}),
createProxyMiddleware('/api2', {
target: 'http://localhost:5001',
changeOrigin: true,
pathRewrite: { '^/api2': '' },
})
)
}
运行
启动服务器1:
node server1.js
启动服务器2:
node server2.js
启动脚手架:
npm start
访问页面
点击第一个按钮:
点击第二个按钮:
到此这篇关于React配置多个代理实现数据请求返回的文章就介绍到这了,更多相关React配置多个代理内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网!