方法一：

      let url = "api/token";
      let config = {
        method: "post",
        url: url,
        headers: {
          "Access-Control-Allow-Origin":"*",  //解决cors头问题
          "Access-Control-Allow-Credentials":"true", //解决session问题
          "Content-Type": "application/json"
        },
        data: {
          "pageNo": 1,
          "pageSize": 50,
        }
      };
      axios(config).then(res => {
        console.log(res)
      }).catch(err => {
        console.log(err);
      });

方法二：

      let url = "api/token";
      let data = {
          "pageNo": 1,
          "pageSize": 50,
      };
      let params={
        headers: {
           "Access-Control-Allow-Origin":"*",  //解决cors头问题
           "Access-Control-Allow-Credentials":"true", //解决session问题
           "Content-Type": "application/json"
        },
     }
     axios.post(url,data,params).then(res => {
        console.log(res)
      }).catch(err => {
        console.log(err);
      });