微信小程序封装wx.request接口(两种方式)_wx.request({

方式一:在根目录新建一个api.js的文件用于存放wx.request的代码

api.js

const app = getApp();
let postApi = function (apiUrl, data, successCallback, errorCallback, completeCallback){
  let apiData = {};
  if (data){
    apiData=data;
  }
  apiData.user_token=app.globalData.userToken;
  wx.request({
    url: app.rootUrl + apiUrl,
    method: "POST",
    data: apiData,
    success: res => {
      successCallback(res.data);
    },
    fail: err => {
      if (errorCallback){
        errorCallback(err);
      }else{
        wx.showToast({
          title: e,
          icon: 'none',
          duration: 1500,
          mask: false
        })
      }
    },
    complete: () => {
      if (completeCallback) {
        completeCallback();
      }
    }
  })
}
 
export default postApi;

注意：在app.js中定义rootUrl，rootUrl是接口url的公共部分 ，apiUrl是接口url的剩余部分

index.js中调用接口

const app = getApp();
import postApi from "../../api.js";
 
postApi("apiUrl?_tq=" + new Date().getTime(), data, res => {
      if (res.code == 0) {
       //请求成功执行
       
      }
    })
  

---

方式二:request.js文件

// export const API_URL = ''; // 项目域名
 
/**
 * 网络请求封装 fetch
 */
export default function fetch(url, params, showLoading = true, method) {
    if (showLoading) {
        wx.showLoading({ title: '加载中' });
    }
    var cookie = wx.getStorageSync('cookie');
    if (!cookie) {
        cookie = '';
    }
    return new Promise((resolve, reject) => {
        wx.request({
            url: `${API_URL}${url}`,
            data: params || {},
            method: method || 'post',
            header: {
                "Accept": "*/*",
                "Content-Type": "application/json; charset=UTF-8'",
                "Cookie": cookie,
            },
            success: res => {
                resolve(res.data);
            },
            fail: error => {
                reject(error);
            },
            complete() {
                if (showLoading) {
                    wx.hideLoading();
                }
            }
        })
    })
}

在app.js文件引入该文件

在页面调用接口

在页面引入const app = getApp();

  getWxUser(userD) {
    var params = {
      name:user.name,
      phone:userD.phone
    }
    app.fetch(接口地址, params).then(
      ret => {
        if (ret.status) {
 
        } else {
          wx.showModal({
            showCancel: false,
            content: ret.errmsg
          });
        }
      }
    )
  },

---

2023.07.28 更新

import siteinfo from '../../siteinfo';
 
export const apis = (url, params, method = 'POST') => {
    let config = {};
    var cookie = wx.getStorageSync('cookie');
    if (!cookie) {
        cookie = '';
    }
    config['method'] = method;
    config['url'] = siteinfo.apiUrl + url;
    if (method == 'POST') {
        config['data'] = params;
    } else if (method == 'GET') {
        config['params'] = params;
    }
    return new Promise((resolve, reject) => {
        wx.request({
            ...config,
            header: {
                'Content-Type': 'application/json; charset=UTF-8',
                "Cookie": cookie
            },
            success(request) {
                resolve(request.data);
                wx.hideLoading();
            },
            fail() {
                wx.hideLoading();
                reject();
            }
        })
    })
}

siteinfo.js文件与app.json文件同级,里面是小程序的基本配置,详细见这篇文章