一隶糕、Node.js知識點(diǎn)
1.Node.js配置https
var express = require(“express”);
var app = express(); //使用nodejs自帶的http狈网、https模塊
var https = require('https');
var http = require('http');
var fs = require('fs'); //用于讀入證書文件
var path = require("path");
//根據(jù)項(xiàng)目的路徑導(dǎo)入生成的證書文件
var privateKey = fs.readFileSync(path.join(__dirname, '/public/215028913200048.key'), 'utf8');
var certificate = fs.readFileSync(path.join(__dirname, '/public/215028913200048.pem'), 'utf8');
var credentials = {key: privateKey, cert: certificate};
//創(chuàng)建http與HTTPS服務(wù)器
var httpServer = http.createServer(app,function () {
console.log('HTTP Server is running on: http://localhost:%s', PORT);
});
httpServer.listen(3000);
//創(chuàng)建http與HTTPS服務(wù)器
var httpsServer = https.createServer(credentials, app,function () {
console.log('HTTPS Server is running on: https://localhost:%s', SSLPORT); }); //可以根據(jù)請求判斷是http還是https
app.get('/', function (req, res) {
if(req.protocol === 'https') {
res.status(200).send('This is https visit!');
} else {
res.status(200).send('This is http visit!');
}
});
httpsServer.listen(3001);
2.Node.js解決跨域問題
app.all('*', function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
res.header("X-Powered-By",' 3.2.1');
res.header("Content-Type", "application/json;charset=utf-8");
next();
});
3.ajax訪問
- 一般情況下躏吊，使用微信小程序或Vue對后端進(jìn)行訪問時(shí)宴凉，都是需要https訪問才可以普舆，此時(shí)恬口，我們只需要對Node程序進(jìn)行https配置并且進(jìn)行跨域處理即可。當(dāng)然沼侣，配置方法上面已經(jīng)給出祖能。
示例代碼:
var express = require("express");
var app = express(); //使用nodejs自帶的http、https模塊
var https = require('https');
var fs = require('fs');
var path = require("path");
//根據(jù)項(xiàng)目的路徑導(dǎo)入生成的證書文件
var privateKey = fs.readFileSync(path.join(__dirname, '/public/215028913200048.key'), 'utf8');
var certificate = fs.readFileSync(path.join(__dirname, '/public/215028913200048.pem'), 'utf8');
var credentials = {key: privateKey, cert: certificate};
//創(chuàng)建http與HTTPS服務(wù)器
var httpsServer = https.createServer(credentials, app, function () {
console.log('HTTPS Server is running on: https://localhost:%s');
});
//設(shè)置跨域訪問
app.all('*', function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
res.header("X-Powered-By",' 3.2.1');
res.header("Content-Type", "application/json;charset=utf-8");
next();
});
app.get('/',function (req, res) {
res.status(200).send('This is https visit!');
console.log("lalala");
});
app.get('/news', function (req, res) {
console.log("歷史性突破誕生啦");
})
httpsServer.listen(3000);
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