在java代码中使用正则表达式

今天工作需要，得弄个正则表达式，还得是后台的，忙活了小半天

  @ResponseBody
@RequestMapping(value = "checkUrl")
public boolean checkUrl(String url) {
boolean result = false;
String first = url.substring(0, 1);
if(first.equals("/") ){
String regEx = "^[A-Za-z]+$";
Pattern pat = Pattern.compile(regEx);
String[] urlPart = url.substring(1).split("/");
for (String str : urlPart) {
Matcher mat = pat.matcher(str);
boolean rs = mat.find();
if(rs){
FunOptCriteria criteria = new FunOptCriteria();
criteria.createCriteria().andUrlEqualTo(url);
List<FunOpt> foList = funOptService.selectByExample(criteria);
result = foList.isEmpty();
} 
break;
}
} 
return result;
} 

记过就这个了，试了试，还是挺好使的、、、、、、跟js里面写正则没多大区别好像