return new Promise((resolve, reject) => {
request.post({url, formData: formData}, (err, response, body) => {
try{
const out = JSON.parse(body);
let result = {
data: out,
status: 0,
message: "ok"
}
return resolve(result);
}catch(err){
return reject({
status: -1,
message: err.message
});
}
});
}
}
/*
* 发送客服消息给用户
* https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/customer-message/customerServiceMessage.send.html
*/
async sendMessageToCustomer(data){
const url = `https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=${data.access_token}`;
return new Promise((resolve, reject) => {
request.post({url, data}, (err, response, body) => {
...
});
}
}
WXDecryptContact.js
消息加密解密文档
const crypto = require('crypto'); // 加密模块const decodePKCS7 = function (buff) {
let pad = buff[buff.length - 1];
if (pad < 1 || pad > 32) {
pad = 0;
}
return buff.slice(0, buff.length - pad);
};
// 微信转发客服消息解密
const decryptContact = (key, iv, crypted) => {
const aesCipher = crypto.createDecipheriv('aes-256-cbc', key, iv);
aesCipher.setAutoPadding(false);
let decipheredBuff = Buffer.concat([aesCipher.update(crypted, 'base64'), aesCipher.final()]);
decipheredBuff = decodePKCS7(decipheredBuff);
const lenNetOrderCorpid = decipheredBuff.slice(16);
const msgLen = lenNetOrderCorpid.slice(0, 4).readUInt32BE(0);
const result = lenNetOrderCorpid.slice(4, msgLen + 4).toString();
return result;
};
// 解密微信返回给配置的消息服务器的信息
const decryptWXContact = (wechatData) => {
if(!wechatData){
wechatData = '';
}
//EncodingAESKey 为后台配置时随机生成的
const key = Buffer.from(EncodingAESKey + '=', 'base64');
const iv = key.slice(0, 16);
const result = decryptContact(key, iv, wechatData);
const decryptedResult = JSON.parse(result);
console.log(decryptedResult);
return decryptedResult;
};
module.exports = decryptWXContact;
呼~ 代码终于码完，来看看效果:
总结
开发并不是一帆风顺的，也遇到了一些值得留意的坑，强调一下:
后台配置URL地址一定外网可访问(可以通过内网穿透解决)
文件上传接口uploadTempMedia media参数要用 FormData数据格式 (用node的request库很容易实现。urllib这个库有坑有坑 都是泪T_T)
