golang switch case 条件判断

func GenRandomString(c *gin.Context) {
    length := c.DefaultQuery("length","16")
    len, err := strconv.Atoi(length)
    switch  {
    case err == nil && len > 1024:
        len = 1024
    default:
        len =16
    }

    c.JSON(http.StatusOK, gin.H{
        "length":   len,
        "password": tools.GEN(len),
    })
}