md/src/api/fetch.js

import axios from "axios";

// 创建axios实例
const service = axios.create({
    baseURL: "",
    timeout: 10 * 1000, // 请求超时时间
});

service.interceptors.request.use(
    (config) => {
        if (/^(post)|(put)|(delete)$/i.test(config.method)) {
            if (config.data && config.data.upload) {
                config.headers["Content-Type"] = "multipart/form-data";
            }
        }
        return config;
    },
    (error) => {
        Promise.reject(error);
    }
);

service.interceptors.response.use(
    (res) => {
        return res.data ? res.data : Promise.reject(res);
    },
    (error) => Promise.reject(error)
);

export default service;