微信小程序请求封装

引入

let Request = require("../"); //导入模块

get/post

Request.post('', //调用方法
  {
  }, {
    'content-type': 'application/json', // 默认值
  },
).then(res => { //成功回调
}).catch(err => {}) //异常回调

上传

Request.upload('', //调用方法
  {
    name
  }, {
    filePath
  }, {
    'content-type': 'multipart/form-data',
  },
).then(res => { //成功回调
}).catch(err => {}) //异常回调

整体代码

function fun(url, method, data, header) {
  data = data || {};
  header = header || {};
  let sessionId = wx.getStorageSync("UserSessionId");
  if (sessionId) {
    if (!header || !header["SESSIONID"]) {
      header["SESSIONID"] = sessionId;
    }
  }
  wx.showNavigationBarLoading();
  let promise = new Promise(function (resolve, reject) {
    wx.request({
      url: apiHttp + url,
      header: header,
      data: data,
      method: method,
      success: function (res) {
        if (res.statusCode == 401) {
          wx.redirectTo({
            url: '/pages/login/login',
          })
        }
        if (res.statusCode == 200) {
          if (res.data.code == 0) {
            resolve(res);
          } else {
            wx.showToast({
              title: "请求错误",
              icon: 'none'
            })
          }
        }
      },
      fail: reject,
      complete: function () {
        wx.hideNavigationBarLoading();
      }
    });
  });
  return promise;
}

function upload(url, name, filePath) {
  let header = {};
  let sessionId = wx.getStorageSync("UserSessionId"); //从缓存中拿该信息
  if (sessionId) {
    if (!header || !header["SESSIONID"]) {
      header["SESSIONID"] = sessionId; //添加到请求头中
    }
  }
  wx.showNavigationBarLoading();
  let promise = new Promise(function (resolve, reject) {
    wx.uploadFile({
      url: apiHttp + url,
      filePath: filePath,
      name: name,
      header: header,
      success: function (res) {
        resolve(res);
      },
      fail: reject,
      complete: function () {
        wx.hideNavigationBarLoading();
      }
    });
  });
  return promise;
}
module.exports = {
  apiHttp: apiHttp,
  "get": function (url, data, header) {
    return fun(url, "GET", data, header);
  },
  "post": function (url, data, header) {
    return fun(url, "POST", data, header);
  },
  upload: function (url, name, filePath) {
    return upload(url, name, filePath);
  }
};