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/*
* @Author: Echonessy
* @Date:2020-10-15
* @Function : 小程序二维码生成与获取
*/
const request = require('request');
const appid = '你的小程序appid';
const appSecret = '你的小程序appSecret ';
//String buffer 转base64
const toBase64 = (body) => {
let base64Img = new Buffer.from(body, 'binary').toString('base64');
let decodeImg = new Buffer.from(base64Img, 'base64');
let binaryBuffer = new Buffer.from(decodeImg, 'binary');
let src = 'data: image/png;
base64,' + binaryBuffer.toString('base64');
return src
}// 获取token
const getAccessToken = (appid,appSecret) => {
return new Promise((resolve, reject) => {
let url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential';
url +="&appid=" + appid;
url +="&secret=" + appSecret;
let options = {url: url,method: "POST",}
request(options,(error, response, body)=>{
console.log('------------------getAccessToken-----------------')
console.log(body)
console.log('------------------getAccessToken-----------------')
try {
resolve(JSON.parse(body).access_token)
}catch (e) {
resolve('')
}
})
})
}// 获取小程序二维码请求，适用于需要的码数量较少的业务场景。通过该接口生成的小程序码，永久有效，有数量限制
const createQrcodeRequest = (token,subData) =>{
return new Promise((resolve, reject) => {
const url = 'https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token='+ token;
const options = {
url:url,
method: "POST",
form:JSON.stringify(subData),
encoding:"binary" // 二进制流
};
request(options,(error, response, body)=>{
let src = https://www.it610.com/article/toBase64(body)
console.log('------------------createQrcodeRequest-----------------')
console.log(src)
console.log('------------------createQrcodeRequest-----------------')
resolve(src);
})
})
}// 获取小程序码请求, 适用于需要的码数量较少的业务场景。通过该接口生成的小程序码，永久有效，有数量限制
const getWxCodeRequest = (token,subData) => {
return new Promise((resolve, reject) => {
const url = 'https://api.weixin.qq.com/wxa/getwxacode?access_token='+ token;
const options = {
url:url,
method: "POST",
form:JSON.stringify(subData),
encoding:"binary" // 二进制流
}
request(options,(error, response, body)=>{
let src = https://www.it610.com/article/toBase64(body);
console.log('------------------getWxCodeRequest-----------------')
console.log(src)
console.log('------------------getWxCodeRequest-----------------')
resolve(src);
})
})
}// 获取小程序码请求，适用于需要的码数量极多的业务场景。通过该接口生成的小程序码，永久有效，数量暂无限制。
const getUnlimitedCodeRequest = (token,subData) => {
return new Promise((resolve, reject) => {
const url = 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token='+ token;
const options = {
url:url,
method: "POST",
form:JSON.stringify(subData),
encoding:"binary" // 二进制流
}
request(options,(error, response, body)=>{
let src = https://www.it610.com/article/toBase64(body);
console.log('------------------getUnlimitedCodeRequest-----------------')
console.log(src)
console.log('------------------getUnlimitedCodeRequest-----------------')
resolve(src);
})
})
}// 创建小程序二维码，返回base64地址,适用于需要的码数量较少的业务场景。通过该接口生成的小程序码，永久有效，有数量限制
const getBaseCode = () => {
return new Promise((resolve, reject) => {
getAccessToken(appid,appSecret).then(token =>{
let creatOptions = {token:token,path:"pages/index/index",width:300}
createQrcodeRequest(token,creatOptions).then(base64 =>{
resolve(base64)
})
})
})
}// 获取小程序码，返回base64地址, 适用于需要的码数量较少的业务场景。通过该接口生成的小程序码，永久有效，有数量限制
const getWxaCode = () => {
return new Promise((resolve, reject) => {
getAccessToken(appid,appSecret).then(token =>{
let getOptions = {
path:"pages/index/index", // 扫码进入的小程序页面路径
width:300, // 小程序码大小
line_color:{"r":"17","g":"171","b":"153"}, // 小程序码线条颜色
is_hyaline:false //是否需要透明底色，为 true 时，生成透明底色的小程序码
}
getWxCodeRequest(token,getOptions).then(base64 =>{
resolve(base64)
})
})
})
}// 获取小程序码，返回base64地址, 适用于需要的码数量极多的业务场景。通过该接口生成的小程序码，永久有效，数量暂无限制。
const getUnlimitedWxaCode = () => {
return new Promise((resolve, reject) => {
getAccessToken(appid,appSecret).then(token =>{
let getOptions = {
path:"pages/index/index", // 扫码进入的小程序页面路径
width:300, // 小程序码大小
scene:"Echonessy",// 标识
line_color:{"r":"17","g":"171","b":"153"}, // 小程序码线条颜色
is_hyaline:false //是否需要透明底色，为 true 时，生成透明底色的小程序码
}
getUnlimitedCodeRequest(token,getOptions).then(base64 =>{
resolve(base64)
})
})
})
}module.exports = {
getBaseCode:getBaseCode,
getWxaCode:getWxaCode,
getUnlimitedWxaCode:getUnlimitedWxaCode,
}
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