java常见数据校验

/**
* 手机号验证
*
* @param str
* @return 验证通过返回true
*/
public static boolean isMobile(String str) {
Pattern p = null;
Matcher m = null;
boolean b = false;
p = Pattern.compile("¹[3,4,5,8][0-9]{9}$"); // 验证手机号
m = p.matcher(str);
b = m.matches();
return b;
}

/**
 * 电话号码验证
 * 
 * @param str
 * @return 验证通过返回true
 */
public static boolean isPhone(String str) {
	Pattern p1 = null, p2 = null;
	Matcher m = null;
	boolean b = false;
	p1 = Pattern.compile("^[0][1-9]{2,3}-[0-9]{5,10}$"); // 验证带区号的
	p2 = Pattern.compile("^[1-9]{1}[0-9]{5,8}$"); // 验证没有区号的
	if (str.length() > 9) {
		m = p1.matcher(str);
		b = m.matches();
	} else {
		m = p2.matcher(str);
		b = m.matches();
	}
	return b;
}

/**
 * 验证邮箱
 * 
 * @param email
 * @return
 */
public static boolean checkEmail(String email) {
	boolean flag = false;
	try {
		String check = "^([a-z0-9A-Z]+[-|_|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";
		Pattern regex = Pattern.compile(check);
		Matcher matcher = regex.matcher(email);
		flag = matcher.matches();
	} catch (Exception e) {
		flag = false;
	}
	return flag;
}

/**
 * 短信验证码(6位数字)
 */
public static boolean checkMsgCode(String code) {
	boolean flag = false;
	try {
		String check = "^[0-9]{6}";
		Pattern regex = Pattern.compile(check);
		Matcher matcher = regex.matcher(code);
		flag = matcher.matches();
	} catch (Exception e) {
		flag = false;
	}
	return flag;
}

/**
 * 验证日期格式
 * @param date yyyy-mm-dd
 * @return
 */
public static boolean checkDate(String date) {
	if (date == null) return false;
	try {
		String check = "[0-9]{4}-[0-9]{2}-[0-9]{2}";
		Pattern regex = Pattern.compile(check);
		Matcher matcher = regex.matcher(date);
		if (!matcher.matches()) return false;
		
		String data[] = date.split("-");
		int year = Integer.parseInt(data[0]);
		int month = Integer.parseInt(data[1]);
		int day = Integer.parseInt(data[2]);
		boolean isLeapYear = (year % 4 == 0 && year % 100 != 0)
				|| (year % 400 == 0);
		if (!(month >= 1 && month <= 12)) return false;
		if (!(day >= 1 && day <= 31)) return false;
		
		if (month == 2) {
			int maxDay = isLeapYear ? 29 : 28;
			if (!(day >= 1 && day <= maxDay)) return false;
		}
		
		if (day == 31) {
			boolean isBigMonth = 
					month == 1 ||
					month == 3 ||
					month == 5 ||
					month == 7 ||
					month == 8 ||
					month == 10 ||
					month == 12;
			return isBigMonth;
		}
		
		return true;
	} catch (Exception e) {
		return false;
	}
} 

/**
 * 是否是Url地址
 * @param str
 * @return
 */
public static boolean isURL(String str){
	boolean flag = false;
    try {
    	//转换为小写
        str = str.toLowerCase();
        String check = "^((https|http|ftp|rtsp|mms)?://)"  
                + "?(([0-9a-z_!~*'().&=+$%-]+: )?[0-9a-z_!~*'().&=+$%-]+@)?" //ftp的user@  
               + "(([0-9]{1,3}\\.){3}[0-9]{1,3}" // IP形式的URL- 199.194.52.184  
                 + "|" // 允许IP和DOMAIN（域名） 
                 + "([0-9a-z_!~*'()-]+\\.)*" // 域名- www.  
                 + "([0-9a-z][0-9a-z-]{0,61})?[0-9a-z]\\." // 二级域名  
                + "[a-z]{2,6})" // first level domain- .com or .museum  
                + "(:[0-9]{1,4})?" // 端口- :80  
                + "((/?)|" // a slash isn't required if there is no file name  
                + "(/[0-9a-z_!~*'().;?:@&=+$,%#-]+)+/?)$";  
        Pattern regex = Pattern.compile(check);
		Matcher matcher = regex.matcher(str);
		flag = matcher.matches();
    } catch (Exception e) {
    	flag = false;
    }
    
	return flag;
}

/**
 * 是否是汉字
 * @param str
 * @return
 */
public static boolean isChineseCharacter(String str) {
	String check = "[\\u4e00-\\u9fa5]+";
	Pattern regex = Pattern.compile(check);
	Matcher matcher = regex.matcher(str);
	return matcher.matches();
}

/**
 * 是否是银行卡号 
 * Luhn算法来验证:
 * 1、从卡号最后一位数字开始，逆向将奇数位(1、3、5等等)相加。
 * 2、从卡号最后一位数字开始，逆向将偶数位数字，先乘以2（如果乘积为两位数，则将其减去9），再求和。
 * 3、将奇数位总和加上偶数位总和，结果应该可以被10整除。
 * @param number
 * @return
 */
public static boolean isBankerNumber(String number) {
	if (number == null ) return false;
	if (number.length() != 16 && number.length() != 19) return false;
	if (!number.matches("\\d+")) return false;
	
	char digits[] = number.toCharArray();
	int len = number.length();
	int numSum = 0;
	for(int i = len - 1,j = 1; i >= 0; i--,j++) {
		int value = digits[i] - '0';
		if (j % 2 == 0) {
			value *= 2;
			if (value > 9) value -= 9;
		}
		numSum += value;
	}
	return numSum % 10 == 0;
}

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