node.js利用captchapng模塊實現圖片驗證碼
阿新 • • 發佈:2017-05-14
parse math style ase 圖片驗證碼 all pre 驗證 parseint
安裝captchapng模塊
npm install captchapng
nodejs中使用
var express = require(‘express‘); var captchapng = require(‘captchapng‘); //驗證碼 exports.verify= function(req, res, next) { var code = parseInt(Math.random() * 9000 + 1000); req.session.checkcode = code; var p = new captchapng(100, 30, code); p.color(0, 0, 0, 0); p.color(80, 80, 80, 255); var img = p.getBase64(); var imgbase64 = new Buffer(img, ‘base64‘); res.writeHead(200, { ‘Content-Type‘: ‘image/png‘ }); res.end(imgbase64); }
node.js利用captchapng模塊實現圖片驗證碼