<view class="container">
 <button bindtap='chooseImageTap'>上传图片</button>
</view>

Page({
 
 /**
  * 页面的初始数据
  */
 data: {
  imgs: [],//本地图片地址数组
  picPaths:[],//网络路径
 },
 
 /**
  * 生命周期函数--监听页面加载
  */
 onLoad: function (options) {
  
 },
 //添加上传图片
 chooseImageTap: function () {
  var that = this;
  wx.showActionSheet({
   itemList: ['从相册中选择', '拍照'],
   itemColor: "#00000",
   success: function (res) {
    if (!res.cancel) {
     if (res.tapIndex == 0) {
      that.chooseWxImage('album')
     } else if (res.tapIndex == 1) {
      that.chooseWxImage('camera')
     }
    }
   }
  })
 },
 // 图片本地路径
 chooseWxImage: function (type) {
  var that = this;
  var imgsPaths = that.data.imgs;
  wx.chooseImage({
   sizeType: ['original', 'compressed'],
   sourceType: [type],
   success: function (res) {
    console.log(res.tempFilePaths[0]);
    that.upImgs(res.tempFilePaths[0], 0) //调用上传方法
   }
  }) 
 },
 //上传服务器
 upImgs: function (imgurl, index) {
  var that = this;
  wx.uploadFile({
   url: 'https://xxxxxxxxxxxxxxxxxxxxxxxxxxxx',//
   filePath: imgurl,
   name: 'file',
   header: {
    'content-type': 'multipart/form-data'
   },
   formData: null,
   success: function (res) {
    console.log(res) //接口返回网络路径
    var data = JSON.parse(res.data)
     that.data.picPaths.push(data['msg'])
     that.setData({
      picPaths: that.data.picPaths
     })
     console.log(that.data.picPaths)
   }
  })
 },
 
})