anxios封装拦截器的两种方式

本文介绍: axios封装的两种风格

1. 函数方式

import axios, { AxiosInstance, AxiosRequestConfig } from "axios";
import { Message } from "view-ui-plus";

export const createAxiosByinterceptors = (
	config?: AxiosRequestConfig
): AxiosInstance => {
	const instance = axios.create({
		timeout: 1000, //超时配置
		withCredentials: true, //跨域携带cookie
		...config, // 自定义配置覆盖基本配置
	});

	// 添加请求拦截器
	instance.interceptors.request.use(
		(config: any) => {
			// 在发送请求之前做些什么
			console.log("config:", config);
			return config;
		},
		(error) => {
			// 对请求错误做些什么
			return Promise.reject(error);
		}
	);

	// 添加响应拦截器
	instance.interceptors.response.use(
		(response) => {
			// 对响应数据做点什么
			console.log("response:", response);
			const { code, data, message } = response.data;
			if (code === 200) return data;
			else if (code === 401) {
				// 退出处理
			} else {
				Message.error(message);
				return Promise.reject(response.data);
			}
		},
		(error) => {
			// 对响应错误做点什么
			console.log("error-response:", error.response);
			console.log("error-config:", error.config);
			console.log("error-request:", error.request);
			if (error.response) {
				if (error.response.status === 401) {
					// 退出处理
				}
			}
			Message.error(error?.response?.data?.message || "服务端异常");
			return Promise.reject(error);
		}
	);
	return instance;
};

使用方法

import { createAxiosByinterceptors } from "@/service/service";

const request = createAxiosByinterceptors({
	baseURL: "/sdkjfdk",
});

//lodaing配置
export const appList = (params: any): Promise<any> =>
	request.get("/app", { params, loading: true }); // 不需要默认的全局loading效果可配置loading为false关闭 loading默认为true

// 文件下载
export const exportGoods = (data: any) =>
	request.post("/export", data, {
		responseType: "blob",
	});

export const expordtGoods = (data: any) =>
	request.put("/export", data, {
		responseType: "blob",
	});

讲解：函数式通过调用方法创建axios实例，通过参数传入基础url，超时时间等定义参数。
使用时比较接近axios写法。

2. 类方法

import axios, { AxiosInstance, AxiosRequestConfig, AxiosResponse } from 'axios';
import { Message } from 'view-design';
const $Message: any = Message;
export class HttpService {
  private instance: AxiosInstance;
  baseConfig: AxiosRequestConfig = { baseURL: "/commonApi" };
  constructor(baseURL?: string, timeout?: number) {
    // 使用axios.create创建axios实例
    this.instance = axios.create({ ...this.baseConfig, baseURL, timeout });
    // 请求拦截器
    this.instance.interceptors.request.use((config: AxiosRequestConfig) => {
      return config;
    }, (error: any) => {
      return Promise.reject(error);
    })
    // 响应拦截器
    this.instance.interceptors.response.use((response: AxiosResponse) => {
      if (response.request.responseType === 'blob') { // 流文件
        return response
      }
      const { retcode, code, status, message, msg, desc } = response.data;
      let msgStr = message || msg || desc || '系统异常，请联系管理员';
      if ((retcode && retcode === 200) || (code && code === 0)) {
        return Promise.resolve(response.data);
      } else if (!status) {
        return Promise.resolve(response.data);
      } else {
        $Message.error(msgStr);
        return Promise.reject(response.data);
      }
    }, (error: any) => {
      const { status, data } = error.response
      const { msg, message, desc } = data
      const errMsg = msg || message || desc || '系统异常，请联系管理员';
      switch (status) {
        case 401:
        // 这里可以做清空storage并跳转到登录页的操作
        case 400:
        case 403:
        case 404:
        case 408:
        case 500:
        case 501:
        case 502:
        case 503:
        case 504:
        case 505:
        default:
          $Message.error(errMsg);
      }
      return Promise.reject(error);
    })
  }

  /**
   * commonRequest
   */
  public commonRequest(config: AxiosRequestConfig): Promise<AxiosResponse> {
    return this.instance(config)
  }
}

使用方法

import { HttpService } from '../interceptors'

const proxyPrefix: string = '/proxyApi';
const $docQaReq: any = new HttpService(proxyPrefix)

export const apiUrl = {
  docFileUpload: `${proxyPrefix}/doc/semantic-doc/document/file/upload`,
}

/**
 * @description 获取所有文档库标签（以及文档
 * @param type 1 为文档标签，不传则为文档库标签
 */
export const getAllLibLabel = (data?: {
  type: number;
}) => {
  return $docQaReq.commonRequest({
    url: `/doc/semantic-doc/label/list`,
    method: 'get',
    params: data? data: null
  })
}

/**
 * @description 新增文档库标签（以及文档
 * @param type 1 为文档标签，不传则为文档库标签
 */
export const creatLibLabel = (data: {
  name: string;
  type?: number;
}) => {
  return $docQaReq.commonRequest({
    url: '/doc/semantic-doc/label/create',
    method: 'post',
    data
  })
}