微信小程序二维码

'use strict';
const request = require('request');
const got = require('got');
const chance = require('chance')();
const fs = require('fs');
const path = require('path');
const PassThrough = require('stream').PassThrough;
//文档 https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/qr-code/wxacode.getUnlimited.html

// 生成图片到本地
// (async () => {
//     let appid = ''; // 微信小程序
//     let appsecret = ''; // 微信小程序
//     let accessTokenInfo = (await got.get(`https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=${appid}&secret=${appsecret}`, { 'json': true })).body;
//     let { access_token } = accessTokenInfo || {};

//     let params = {
//         'scene': chance.hash({ 'length': 32 }).toLowerCase(),
//     // 'page': 'pages/index/index',
//     };

//     // 创建一个可读浏
//     let name = `${new Date().getTime()}${chance.hash({ 'length': 4 }).toLowerCase()}.png`;
//     let file = path.resolve(__dirname, `../videos/${name}`);
//     let writeStream = fs.createWriteStream(file);

//     let result = await new Promise((resolve, reject) => {
//         return request({
//             'method': 'POST',
//             'url': `https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=${access_token}`,
//             'json': true,
//             'body': {
//                 'scene': '222',
//             },
//         }, (err, res, body) => {

//             if (err) reject(err);
//             // resolve(res);
//         }).pipe(fs.createWriteStream('doodle.png'));
//     });

//     // 如果调用成功，会直接返回图片二进制内容，如果请求失败，会返回 JSON 格式的数据
//     // console.log('result.body=====>', result.body);
//     // console.log('result.body=====>', result.body.errcode); // 45009 频率受限制 41030 所传page页面不存在，或者小程序没有发布

// })();

const OSS = require('ali-oss');
const client = new OSS({
    'region': '',
    'accessKeyId': '',
    'accessKeySecret': '',
    'bucket': '',
});
// 生成图片到oss
(async () => {
    let appid = 'wx543f14cc9070b343'; // 小程序appid 
    let appsecret = 'ae811740d8776b7cdd5233a141c1b01d'; //  小程序secret
    let accessTokenInfo = (await got.get(`https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=${appid}&secret=${appsecret}`, { 'json': true })).body;
    let { access_token } = accessTokenInfo || {};

    let params = {
        'scene': chance.hash({ 'length': 32 }).toLowerCase(),
        // 'page': 'pages/index/index',
    };

    let stream;
    let pipf = await new Promise((resolve, reject) => {
        stream = request({
            'method': 'POST',
            'url': `https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=${access_token}`,
            'json': true,
            'body': {
                'scene': '222',
            },
        }).on('error', err => {
            resolve(0);
        })
            .on('response', response => {
                if (response.statusCode !== 200) {
                    resolve(0);
                }
                resolve(1);
            })
            .pipe(PassThrough());
    });
    if (!pipf) {
        return;
    }

    //上传到oss上
    let result = await client.putStream(`/common/organization/${new Date().getTime()}${chance.hash({ 'length': 4 }).toLowerCase()}/org.png`, stream);

    console.log('result=======>', result);
})();