vue中和后台交互，首先要引用vue-resource.js

vue-resource.js是专门和后台进行交互

<!-- ==============引入vue-resource插件=================-->
<script src="../js/vueJs/vue-resource.js"></script>

function getRequest(url, params) {
  return new Promise((resolve, reject) => {
    Vue.$http.get(
      url,
      {
        params: params
      },
      {emulateJSON: true}
    )
    .then((res) => {   //成功的回调
      resolve(res);
    })
    .catch((res) => {  //失败的回调
      reject(res);
    });
  });
}

function postRequest(url, params) {
  return new Promise((resolve, reject) => {
    Vue.$http.post(
      url,
      {
        params
      },
      {emulateJSON: true}
    )
    .then((res) => {    //成功胡回调
      resolve(res.body);
    })
    .catch((res) => {   //失败的回掉
      reject(res.body);
    });
  });
}