使用腾讯云TCB云函数实现生成随机验证码功能

'use strict';
const svgCaptcha = require('svg-captcha')
exports.main = async (event, context) => {
    var codeConfig = {
        size: 5,// 验证码长度
        ignoreChars: '0o1i', // 验证码字符中排除 0o1i
        noise: 2, // 干扰线条的数量
        height: 44
    }
    var captcha = svgCaptcha.create(codeConfig)
    var svgCon = captcha.data
    //svg转base64;
    let src = Buffer.from(svgCon).toString('base64')
    return {
        isBase64Encoded: true,
        statusCode: 200,
        headers: {
            "content-type": "image/svg+xml"
        },
        body: src
    }
};