Vue3

import axios from "axios";
import { ElMessage } from "element-plus";
//创建axios实例
let request = axios.create({
    baseURL: import.meta.env.VITE_APP_BASE_API,
    timeout: 5000
})
//请求拦截器
request.interceptors.request.use(config => {
    // config 配置对象，headers属性请求头，经常给服务器端携带公共参数
    return config;
});
//响应拦截器
request.interceptors.response.use((response) => {
    return response.data;
}, (error) => {
    //处理网络错误
    // 定义一个变量：存储网络错误信息
    let msg = '';
    let status = error.response.status;
    switch (status) {
        case 401:
            msg = "token过期";
            break;
        case 403:
            msg = '无权访问';
            break;
        case 404:
            msg = "请求地址错误";
            break;
        case 500:
            msg = "服务器出现问题";
            break;
        default:
            msg = "无网络";

    }
    ElMessage({
        type: 'error',
        message: msg
    })
    return Promise.reject(error);
});
export default request;