vue3封装request请求的完整案例

import axios from "axios";
import { showMessage } from "./status"; // 引入状态码
import { ElMessage } from "element-plus"; // 引入提示框

// 设置接口超时时间
axios.defaults.timeout = 60000;
axios.defaults.baseURL = "/dev-api" || "";  // 自定义接口地址

const token = () => {
    if (sessionStorage.getItem("token")) {
        return sessionStorage.getItem("token");
    } else {
        return sessionStorage.getItem("token");
    }
};

const getCookie = (name) => {
    const value = `; ${document.cookie}`;
    const parts = value.split(`; ${name}=`);
    if (parts.length === 2) return parts.pop().split(';').shift();
};

//请求拦截
axios.interceptors.request.use(
    (config) => {
        // 配置请求头
        config.headers["Content-Type"] = "application/json;charset=UTF-8";
        config.headers["token"] = token();
        //配置令牌等
        return config;
    },
    (error) => {
        return Promise.reject(error);
    }
);

// 响应拦截
axios.interceptors.response.use(
    (response) => {
        return response;
    },
    (error) => {
        const { response } = error;
        if (response) {
            // 请求已发出，但是不在2xx的范围
            showMessage(response.status); // 传入响应码，匹配响应码对应信息
            return Promise.reject(response.data);
        } else {
            ElMessage.warning("网络连接异常,请稍后再试!");
        }
    }
);

//请求并导出
export function request(data: any) {
    return new Promise((resolve, reject) => {
        const promise = axios(data);
        //处理返回
        promise
            .then((res: any) => {
                resolve(res.data);
            })
            .catch((err: any) => {
                reject(err.data);
            });
    });
}

export const showMessage = (status: number | string): string => {
    let message: string = "";
    switch (status) {
        case 400:
            message = "请求错误(400)";
            break;
        case 401:
            message = "未授权，请重新登录(401)";
            break;
        case 403:
            message = "拒绝访问(403)";
            break;
        case 404:
            message = "请求出错(404)";
            break;
        case 408:
            message = "请求超时(408)";
            break;
        case 500:
            message = "服务器错误(500)";
            break;
        case 501:
            message = "服务未实现(501)";
            break;
        case 502:
            message = "网络错误(502)";
            break;
        case 503:
            message = "服务不可用(503)";
            break;
        case 504:
            message = "网络超时(504)";
            break;
        case 505:
            message = "HTTP版本不受支持(505)";
            break;
        default:
            message = `连接出错(${status})!`;
    }
    return `${message}，请检查网络或联系管理员！`;
};

const proxy = {
  '/dev-api': {
    target: 'http://localhost:80', // 实际请求地址
    changeOrigin: true,
    rewrite: (path) => path.replace(/^\/dev-api/, ''),
  },
};

 server: {
    proxy,
    host: 'localhost',
    port: 80,
    open: true,
  },

import { request } from "../utils/request";

export function login(data: any) {
    return request({
        url: "/system/encipher",
        method: "get",
        data,
    });
}

export function list(params: any) {
    return request({
        url: "/system/encipher/",
        method: "get",
        params,
    });
}

const onRootClick =   () => {
  var data = localStorage.getItem("datalist");
  var item = JSON.parse(data);
  var clinetIds;
  for (const itemElement of item) {
    if(itemElement.name==props.name){
      clinetIds = itemElement.clientId
    }
  }
  
  var userName = localStorage.getItem("username");
  list({userName: userName, clientId: clinetIds}).then((res: any) => {

   //执行后续
  }).catch(() =>{
    alert("请求错误")
  })
};