function _ajax(data) {
  var xhr = new XMLHttpRequest()
  var qs = resloveData(data.data)
  data.url = "/prod-api" + data.url
  /*测试环境地址*/
  /*data.url = "http://192.168.122.216/prod-api" + data.url
  data.url = "/prod-api" + data.url*/
  if (data.method.toUpperCase() === 'GET') {
    xhr.open(data.method, data.url + qs);
    xhr.send()
  } else if (data.method.toUpperCase() === 'POST') {
    xhr.open(data.method, data.url);
    xhr.setRequestHeader('Content-Type', 'application/json;charset=utf-8');
    xhr.send(data.data);
  }
  xhr.onreadystatechange = function() {
    if (xhr.readyState === 4 && xhr.status === 200) {
      var res = JSON.parse(xhr.responseText);
      data.success(res);
    }
  }
}
function resloveData(data) {
  let arr = []
  for (let i in data) {
    var str = i + '=' + data[i]
    arr.push(str)
  }
  return arr.join('&')
}