<image src='{{personImage}}' bindtap='changeAvatar' ></image>

Page({
　data:{},

　changeAvatar:function(){

    const _this = this;

    wx.chooseImage({

      count: 1,

      sizeType: ['original', 'compressed'],

      sourceType: ['album', 'camera'],

      success(res) {

        // tempFilePath可以作为img标签的src属性显示图片

        const tempFilePath = res.tempFilePaths[0];

        _this.setData({

          personImage: tempFilePath

        })

        wx.uploadFile({

           url: config.UPLOADFILE, //图片上传至开发服务器接口

           filePath: tempFilePath,

           name: 'file',

           formData: {},

           success(res) {

             const data = res.data;

             console.log(data);

           }

         })

      }

    })

  }

})