1.获取小程序token
gettoken: function () {
console.log("jhajaj");
return new Promise((resolve, reject) => {
let APPID = wxappletsconfig.appid;
let secret = wxappletsconfig.secret;
let url = `https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=${APPID}&secret=${secret}`
request.get(url, (err, response, data) => {
console.log("err", err, data);
if (err) {
resolve(false);
} else {
let AccessToken = JSON.parse(data);
resolve(AccessToken);
}
})
})
},
2.生成小程序码
var accessToken = await wx_applets.gettoken(); //获取小程序token
token = accessToken.access_token;
var id = req.body.id;
var userid = req.body.userid;
var pathstr =req.body.path; //小程序地址
var filename = create_time(); //当前时间
var data = wx_applets.createwxaqrcode(userid,id,pathstr,token,filename);
var picurl = config.url+"/"+data;
var result = {
"status": "200",
"message": "success",
"data":picurl
}
res.jsonp(result);
3.创建
createwxaqrcode:function(userid,id,path,accessToken,filename){
// return new Promise((resolve, reject) => {
var qrcodeurl = 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token='+accessToken
let options = {
method: 'POST',
uri: qrcodeurl,
encoding:null,
body: {
"page": path,
"width":280,
"is_hyaline":false,
"scene":id+","+userid
},
json: true
}
var imgname='uploads/applet/'+filename+'.jpg'
var imgnameback='applet/'+filename+'.jpg'
fs.exists(imgname, function (exists) {
//判断图片是否存在
if(!exists){
//通过微信接口获取小程序码
requestp(options)
.then(function (body) {
var base64Img = body.toString('base64'); // base64图片编码字符串
var dataBuffer = new Buffer(base64Img, 'base64');
//保存到本地
fs.writeFile(imgname, dataBuffer, function(err) {
if(err){
console.log(err);
}else{
console.log("保存成功！");
}
});
})
.catch(function (err) {
console.log(err)
});
}
})
return imgnameback;
// });
},