utils.js

/********************************************************************* */

function requestMsgByUni(url, data, header, callback) {
  uni.request({
    url: url,
    method: "POST",
    data: data,
    header: header,
    success: (res) => {
      callback(res);
    },
    fail: (err) => {
      console.log("请求服务器失败,err", err);
    },
  });
}

function requestMsgGetByUni(url, data, header, callback) {
  uni.request({
    url: url,
    method: "GET",
    data: data,
    header: header,
    success: (res) => {
      callback(res);
    },
    fail: (err) => {
      console.log("请求服务器失败,err", err);
    },
  });
}

export { requestMsgByUni, requestMsgGetByUni };

/*********************************************************************************/
/**
 * 获取当前屏幕的尺寸
 * 高度相关信息，要放在 onReady 里获取
 * */
function getSysInfo() {
  let screenWidth = 0;
  uni.getSystemInfo({
    success: (res) => {
      // console.log("getSysInfo res: ", res);
      screenWidth = res.windowWidth;
    },
    fail: (err) => {
      console.log(err);
    },
  });

  return screenWidth;
}

export { getSysInfo };
/*********************************************************************************/
/**
 * int 转 rgb()，如 -16580608 -> rgb(153, 0, 51)
 * num 是是int类型数字
 * */
function converIntToRgb(num) {
  var rgb = [];
  rgb[0] = (num & 0xff0000) >> 16;
  rgb[1] = (num & 0xff00) >> 8;
  rgb[2] = num & 0xff;
  return "rgb(" + rgb[0] + "," + rgb[1] + "," + rgb[2] + ")";
}
/**
 * rgb() 转 int，如rgb(153, 0, 51) -> -16580608
 * */
function converRgbToInt(r, g, b) {
  var color = (0xff << 24) | (r << 16) | (g << 8) | b;
  return color;
}

/**
 * 获取当前年月日
 * */
function getDate(type) {
  const date = new Date();
  let year = date.getFullYear();
  let month = date.getMonth() + 1;
  let day = date.getDate();

  if (type === "start") {
    year = year - 60;
  } else if (type === "end") {
    year = year + 2;
  }
  month = month > 9 ? month : "0" + month;
  day = day > 9 ? day : "0" + day;
  return `${year}-${month}-${day}`;
}

export { converIntToRgb, converRgbToInt, getDate };

main.js

import Vue from "vue";
import App from "./App";
//引入vuex
import store from "./store";
// 引入自定义 utils.js 文件
import * as utils from "./utils/utils.js";

//把vuex定义成全局组件
Vue.prototype.$store = store;
// 把 utils 挂载到vue原型上，方便全局调用
Vue.prototype.$utils = utils;

Vue.config.productionTip = false;
App.mpType = "app";

const app = new Vue({
  ...App,
  //挂载
  store,
});
app.$mount();

使用

this.$utils.requestMsgByUni(url, data, header, (res) => {
  if (res.statusCode == 200) {
    console.log("成功", res.data);
  } else {
    console.log("失败", res);
  }
});

注意事项

有无 export default 引入方法不同！

一定要注意 import * as utils from "/utils/utils.js" 因为这里没有 export default 所以 import utils from "/utils/utils"是undefined