版本号规则是 x.x.x.x,每一个x的取值范围是0-65535
compile = '(\d+?)\.(\d+?)\.(\d+?)\.(\d+?)'
([0-9]|[1-9]\d{1,3}|[1-5]\d{4}|6[0-5]{2}[0-3][0-5])\.([0-9]|[1-9]\d{1,3}|[1-5]\d{4}|6[0-5]{2}[0-3][0-5])\.([0-9]|[1-9]\d{1,3}|[1-5]\d{4}|6[0-5]{2}[0-3][0-5])