locationService/utils/upload.js

//多张图片上传
function uploadimg(data) {
  var that = this,
    i = data.i ? data.i : 0,
    success = data.success ? data.success : 0,
    fail = data.fail ? data.fail : 0;
  wx.uploadFile({
    url: data.url,
    filePath: data.path[i],
    name: 'fileData',//这里根据自己的实际情况改
    formData: {
      title:data.info.num,
      desc:data.info.desc,
      userid: data.userid
    },
    success: (resp) => {
      success++;
      console.log(resp)
      console.log(i);
      //这里可能有BUG，失败也会执行这里,所以这里应该是后台返回过来的状态码为成功时，这里的success才+1
    },
    fail: (res) => {
      fail++;
      console.log('fail:' + i + "fail:" + fail);
    },
    complete: () => {
      console.log(i);
      i++;
      if (i == data.path.length) {   //当图片传完时，停止调用 
               
        console.log('执行完毕');
        console.log('成功：' + success + " 失败：" + fail);
        wx.hideLoading();
        wx.showToast({
          title: '上传完成',
        }) 
        setTimeout(()=>{
          wx.navigateBack({
            delta: 1 // 回退前 delta(默认为1) 页面
          })
        }, 2000)
        
      } else {//若图片还没有传完，则继续调用函数
        console.log(i);
        data.i = i;
        data.success = success;
        data.fail = fail;
        that.uploadimg(data);
      }

    }
  });
  
}

module.exports = {
  uploadimg: uploadimg
}