this.show = true // 显示提示框
 this.$axios.post('**********',
        formData,
        {
          onUploadProgress: progressEvent => {
            var complete = (progressEvent.loaded / progressEvent.total * 100 | 0)
            this.text = complete + '%'
          }
        },
        {headers: {'Content-Type': 'multipart/form-data'}}
      ).then(response => {
        this.show = false
      }).catch(() => { // 上传失败
        this.show1 = false
        this.showshow = true
      })