记一次Golang代码重构

func Upload(c *gin.Context) {
	file, _, err := c.Request.FormFile("file")
	if err != nil {
		c.JSON(http.StatusOK, gin.H{
			"message": err.Error(),
		})
	} else {
		//filename := header.Filename
		//fmt.Println(filename)
		key, err := uploadFile(file)
		if err != nil {
			c.JSON(http.StatusOK, gin.H{
				"message": err.Error(),
			})
		} else {
			c.JSON(http.StatusOK, gin.H{
				"url": system.GetConfiguration().QiniuFileServer + key,
			})
		}
	}
}

func Upload(c *gin.Context) {
	var err error
	file, _, err := c.Request.FormFile("file")
	if err == nil {
		var key string
		key, err = uploadFile(file)
		if err == nil {
			c.JSON(http.StatusOK, gin.H{
				"url": system.GetConfiguration().QiniuFileServer + key,
			})
			return
		}
	}
	c.JSON(http.StatusOK, gin.H{
		"message": err.Error(),
	})
}