import axios from "axios"; import { message } from "antd"; export default function ajax(url, data = {}, type = 'GET', headers) { return new Promise((resolve, reject) => { let promise; if (type === 'GET'){ promise = axios.get(url, { params: data, headers }) }else if(type === 'POST'){ promise = axios.post(url, data,{headers}) }else if (type === 'PUT') { promise = axios.put(url, data,{headers}) }else if (type === 'DELETE') { promise = axios.delete(url,{ params : data, headers }) } promise.then(response => { resolve(response.data) }).catch(error => { message.error('请求出错了：' + error.message).then(r => {}) }) }) }怎么改成同步axios

不建议将异步请求改为同步请求，因为同步请求会阻塞页面，影响用户体验。但如果你确实需要这样做，可以使用`async/await`将异步请求转换为同步请求，例如：

import axios from "axios";
import { message } from "antd";

export default async function ajax(url, data = {}, type = 'GET', headers) {
  try {
    let response;
    if (type === 'GET') {
      response = await axios.get(url, {
        params: data,
        headers
      });
    } else if (type === 'POST') {
      response = await axios.post(url, data, { headers });
    } else if (type === 'PUT') {
      response = await axios.put(url, data, { headers });
    } else if (type === 'DELETE') {
      response = await axios.delete(url, {
        params: data,
        headers
      });
    }
    return response.data;
  } catch (error) {
    message.error('请求出错了：' + error.message).then(r => {});
    throw error;
  }
}

在这个修改的版本中，我们使用了`async/await`语法来等待异步请求的结果，并将其返回。如果请求出错，我们仍然使用`message.error`方法显示错误消息，并将错误抛出以便上游处理。