vue3 + ts + vite 封装 request

npm i axios

import axios from "axios";
import { showMessage } from "./status"; // 引入状态码文件
import { ElMessage } from "element-plus"; // 引入el 提示框，这个项目里用什么组件库这里引什么

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

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

//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();
    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!");
    }
  }
);

// 封装 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！`;
};

export default defineConfig({
  server: {
    host: "192.168.0.0",
    port: 8080,
    https: false,
    // 跨域的写法
    proxy: {
      "/api": {
        target: "http://192.168.2.12:8080", // 实际请求地址
        changeOrigin: true,
        rewrite: (path) => path.replace(/^\/api/, ""),
      },
    },
  },
});

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

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

const submitForm = () => {
      login({username: "", password: ""}).then((res: any) => {
        console.log(res, "请求成功")
      })
}