exports.main = (event, context) => {
  var data = event;
  var url = event.url;
  const request = require('request');
  return new Promise((resolve, reject) => {
    try {
      request({
        method: 'POST',
        headers: {
          "content-type": "application/json",
        },
        body: JSON.stringify(data),
        url: url,
      }, function (error, response, body) {
        if (error) {
          return reject(error);
        }
        return resolve(JSON.parse(body));
      })
    } catch (e) {
      return reject(e)
    }
  })
}

我用云函数作中转是这么写的