不同语言正则表达式使用小例

JAVA
import java.util.regex.Pattern;

Pattern p = Pattern.compile("^[A-Za-z]+$");
System.out.println(p.matcher(firstname).find());//匹配成功true 否则 false

JS
var pattern= /^[a-zA-Z0-9]*$/;
pattern.test(psptId);// 匹配成功true 否则 false

Python
import re

matchObj = re.match( r'[A-Za-z]+', firstname)
if matchObj:
   print "matchObj.group() : ", matchObj.group()
else: #None
   print "No match!!"