1.需求
我现在一个项目 有可能涉及到的数据多 服务器压力大，所以需要配置多个服务 就出现了一个问题，当第一个服务 调用不通或者失败了 立马换下一个域名调用 接口都是一一样的 就是 前段部分的域名不同
2.实现
import Taro from "@tarojs/taro";
// import QS from 'qs'
import qs from "qs";
import {getStorage,clearStorage,getCurrentPageUrlWithArgs,
} from "..//utils/tools";
import { useUserStore } from "../store";
import { log } from "console";
let needLoadingRequestCount = 0;
// loading配置，请求次数统计
function startLoading() {Taro.showLoading({ title: "加载中", mask: true });
}
function endLoading() {Taro.hideLoading();
} // 声明一个对象用于存储请求个数
function showFullScreenLoading() {if (needLoadingRequestCount === 0) {startLoading();}needLoadingRequestCount++;
}
function tryHideFullScreenLoading() {if (needLoadingRequestCount <= 0) return;needLoadingRequestCount--;if (needLoadingRequestCount === 0) {endLoading();}
}
export default function request(url, config: any = {}, needLoading = false) {const BASE_URLS = ["http://xxxx","http://xxxx",];const userStore = useUserStore();needLoading && showFullScreenLoading();const makeRequest = (baseUrl) => {return new Promise((resolve, reject) => {Taro.request({url: `${baseUrl}${url}`,method: config.type.toUpperCase() || "GET",data: config.data || {},header: {"Content-type": config.paramsFormdata || "application/json","user-token": userStore.Token || "",...config.header,},success: (result) => {const { statusCode, data } = result;console.log(result);if (statusCode === 200) {resolve(data);} else if (statusCode === 401) {Taro.removeStorageSync("TOKEN");Taro.removeStorageSync("userInfo");setTimeout(() => {Taro.redirectTo({url: "/pages/index/index",});}, 500);}},fail: (error) => {Taro.showToast({title: "网络错误",icon: "none",});reject(error);},complete: (res) => {},});});};// Attempt the first base URLreturn makeRequest(BASE_URLS[0]).catch((error) => {// If the first request fails, try the second base URLconsole.error(`Error with first base URL: ${error}`);return makeRequest(BASE_URLS[1]);});
}
3.总结
我这个域名目前配置了两个域名 当前就是第一个域名调用不通的时候 立马换第二个域名 ，当然如果需要多个 可以进行一下循环 ，这样的需求不知道大家会不会有 ，我分享在这了
)
)