<![CDATA[Doctor's WebLog]]> http://www.gaobo.info/index.php zh-cn http://www.gaobo.info/read.php/611.htm <![CDATA[匹配域名的正则表达式]]> Doctor <gregry@cqut.edu.cn> Tue, 02 Jun 2009 00:58:49 +0000 http://www.gaobo.info/read.php/611.htm 干脆直接去Regular Expression Library找算了，合格的如下：
^[a-zA-Z0-9]+([a-zA-Z0-9\-\.]+)?\.(aero|biz|com|coop|edu|gov|info|int|mil|museum|name|net|org|ac|ad|ae|af|ag|ai|al|am|an|ao|aq|ar|as|at|au|aw|az|ba|bb|bd|be|bf|bg|bh|bi|bj|bm|bn|bo|br|bs|bt|bv|bw|by|bz|ca|cc|cd|cf|cg|ch|ci|ck|cl|cm|cn|co|cr|cs|cu|cv|cx|cy|cz|de|dj|dk|dm|do|dz|ec|ee|eg|eh|er|es|et|fi|fj|fk|fm|fo|fr|ga|gb|gd|ge|gf|gg|gh|gi|gl|gm|gn|gp|gq|gr|gs|gt|gu|gw|gy|hk|hm|hn|hr|ht|hu|id|ie|il|im|in|io|iq|ir|is|it|je|jm|jo|jp|ke|kg|kh|ki|km|kn|kp|kr|kw|ky|kz|la|lb|lc|li|lk|lr|ls|lt|lu|lv|ly| ma|mc|md|mg|mh|mk|ml|mm|mn|mo|mp|mq|mr|ms|mt|mu|mv|mw|mx|my|mz|na|nc|ne|nf|ng|ni|nl|no|np|nr|nu|nz|om|pa|pe|pf|pg|ph|pk| pl|pm|pn|pr|ps|pt|pw|py|qa|re|ro|ru|rw|sa|sb|sc|sd|se|sg|sh|si|sj|sk|sl|sm|sn|so|sr| st|su|sv|sy|sz|tc|td|tf|tg|th|tj|tk|tm|tn|to|tp|tr|tt|tv|tw|tz|ua|ug|uk|um|us|uy|uz|va|vc|ve|vg|vi|vn|vu|wf|ws|ye|yt|yu|za|zm|zr|zw|AERO|BIZ|COM|COOP|EDU|GOV|INFO|INT|MIL|MUSEUM|NAME|NET|ORG|AC|

描述：Based of from Steward Haddock's domain nam Checks domain names. This is an attempt to deal with some of the issues of the other reg ex in not handling leading periods(.), hypens(-). and valid extension.
匹配：mydomain.com | my-domain.info | mydomain.aero
不匹配：-mydomain.com | mydomain.aaa | .mydomain.com

^([a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,6}$

描述：Checks domain names. This validates domains based on latest specifications (RFCs 952 and 1123 dealing with hostnames and RFC 1035 dealing with domain name system requirements) except that it only includes realistic fully-qualified domains: 1. requires at least one subdomain 2. allows shortest top-level domains like "ca", and "museum" as longest. Other validation rules: 1. Labels/parts should be seperated by period. 2. Each label/part has maximum of 63 characters. 3. First and last character of label must be alphanumeric, other characters alphanumeric or hyphen. 4. Does not check maxlength of domain which incidentally is 253 characters of text (255 binary representation). For a regular expression that matches ALL domains: ^([a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?\.)*[a-zA-Z0-9]([a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])?$
匹配：regexlib.com | this.is.a.museum | 3com.com
不匹配：notadomain-.com | helloworld.c | .oops.org
Tags - , , , , , ]]> http://www.gaobo.info/read.php/611.htm#blogcomment2174 <![CDATA[[评论] 匹配域名的正则表达式]]> longines <youscript@gmail.com> Wed, 03 Jun 2009 02:32:56 +0000 http://www.gaobo.info/read.php/611.htm#blogcomment2174