java中使用正则对格式的验证

import java.util.regex.*;

public final class RegExpValidator {

 public static boolean isEmail(String str) {
  String regex = "^([a-zA-Z0-9_\\-\\.]+)@(( \\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\\]?)$";
  return match(regex, str);
 }

 public static boolean isIP(String str) {
  String regex = " \\b((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\.((?!\\d\\d\\d)\\d+|1\\d\\d|2[0-4]\\d|25[0-5])\\b";
  return match(regex, str);
 }

 @Deprecated
 public static boolean IsUrl(String str) {
  str = str.toLowerCase();
  //String regex = "^(http|www|ftp|https|)?(://)?( \\w+(-\\w+)*)(\\.(\\w+(-\\w+)*))*((:\\d+)?)(/(\\w+(-\\w+)*))*(\\.?(\\w)*)(\\?)?(((\\w*%)*(\\w*\\?)*(\\w*:)*(\\w*\\+)*(\\w*\\.)*(\\w*&)*(\\w*-)*(\\w*=)*(\\w*%)*(\\w*\\?)*(\\w*:)*(\\w*\\+)*(\\w*\\.)*(\\w*&)*(\\w*-)*(\\w*=)*)*(\\w*)*)$";
  String regex = "^http://[\\w-\\.]+(?:/|(?:/[\\w\\.\\-]+)*(?:/[\\w\\.\\-]+\\.*))?$";
  return match(regex, str);
 }

 public static boolean isTelephone(String str) {
  String regex = "^((13[0-9])|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";
  return match(regex, str);
 }

 public static boolean isPostalcode(String str) {
  String regex = "[1-9]\\d{5}(?!\\d)";
  return match(regex, str);
 }

 public static boolean isIDcard(String str) {
  String regex = "( \\d{14}[0-9a-zA-Z])|(\\d{17}[0-9a-zA-Z])";
  return match(regex, str);
 }

 public static boolean isDate(String str) {
  String regex = "^(( \\d{2}(([02468][048])|([13579][26]))[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][1235679])|([13579][01345789]))[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\\s(((0?[0-9])|([1-2][0-3]))\\:([0-5]?[0-9])((\\s)|(\\:([0-5]?[0-9])))))?$";
  return match(regex, str);
 }

 private static boolean match(String regex, String str) {
  Pattern pattern = Pattern.compile(regex);
  Matcher matcher = pattern.matcher(str);
  return matcher.matches();
 }

 public static void main(String[] args) {
  System.out.println(RegExpValidator.isEmail(" 448117419@qq.com"));
  System.out.println(RegExpValidator.isIP("192.168.1.123"));
  System.out.println(RegExpValidator.isDate("2012-10-10"));
  System.out.println(RegExpValidator
    .IsUrl(" HTTP://www.baidu.nn/hello.do"));
  System.out.println(RegExpValidator.isTelephone("13522349251"));
  System.out.println(RegExpValidator.isPostalcode("417000"));
  System.out.println(RegExpValidator.isIDcard("431221199110020817"));
 }

}