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本篇內(nèi)容主要講解“怎么用nodejs搭建代理服務(wù)器”,感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷,實用性強(qiáng)。下面就讓小編來帶大家學(xué)習(xí)“怎么用nodejs搭建代理服務(wù)器”吧!
安裝 express、http-proxy-middleware
app.js 文件 node app.js
var express = require('express'); var app = express(); app.use(express.static('./public')); app.listen(3000);
在 public 文件夾下建立 a.html
<!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>Document</title> </head> <body> <!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>Document</title> </head> <body> <button onclick="Click()">點(diǎn)擊發(fā)送請求</button> <script src="https://unpkg.com/axios/dist/axios.min.js"></script> <script> function Click() { axios('http://localhost:5000/b') .then(function(res) { console.log(res); }); } </script> </body> </html> </body> </html>
搭建接口服務(wù)器,接口服務(wù)器端口號 5000
node interface.js
var express = require('express'); var app = express(); app.get("/", (req, res) => { res.send("123"); }); app.get("/api/a", (req, res) => { res.send("a"); }); app.get("/b", (req, res) => { console.log(req.headers); res.send("b"); }); app.listen(5000);
訪問http://localhost:3000/a.html
更改 app.js
var express = require('express'); var proxy = require('http-proxy-middleware'); var app = express(); app.use(express.static('./public')); app.use('/api', proxy.createProxyMiddleware({ target: 'http://localhost:5000', changeOrigin: false, pathRewrite: { "^/api": "" } })); app.listen(3000);
更改 a.html
<!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>Document</title> </head> <body> <!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>Document</title> </head> <body> <button onclick="Click()">點(diǎn)擊發(fā)送請求</button> <script src="https://unpkg.com/axios/dist/axios.min.js"></script> <script> function Click() { // axios('http://localhost:5000/b') // .then(function(res) { // console.log(res); // }); axios('/api/b') .then(function(res) { console.log(res); }); } </script> </body> </html> </body> </html>
訪問 http://localhost:3000/a.html
將 a.html 請求地址改為 /api/b,那么發(fā)送請求的時候會自動補(bǔ)上主機(jī)和端口號http://localhost:3000
所以請求發(fā)送到了3000端口
參數(shù)含義
target
: 轉(zhuǎn)發(fā)到的目標(biāo)地址
changeOrigin
: 是否更改host。默認(rèn)為false,不重寫
true
false
pathRewrite
:路徑重寫(在這里是去掉’api’)
最終請求被轉(zhuǎn)發(fā)到了 http://localhost:5000/b
app.get("/b", (req, res) => { console.log(req.headers); res.send("b"); });
整個過程就像這樣
到此,相信大家對“怎么用nodejs搭建代理服務(wù)器”有了更深的了解,不妨來實際操作一番吧!這里是億速云網(wǎng)站,更多相關(guān)內(nèi)容可以進(jìn)入相關(guān)頻道進(jìn)行查詢,關(guān)注我們,繼續(xù)學(xué)習(xí)!
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