common_helper/src/main/java/com/xiongyingqi/util/StringUtil.java
public static String fillZero(long number, int length) {
        StringBuilder builder = new StringBuilder();
        int least = length - numberLength(number);
        char[] zeros = new char[least];
        for (int i = 0; i < least; i++) {
            zeros[i] = '0';
        }
        builder.append(new String(zeros));
        builder.append(number);
        return builder.toString();
    }
public static String fillZero(long number, int length) {
        StringBuilder builder = new StringBuilder();
        int least = length - numberLength(number);
        char[] zeros = new char[least];
        for (int i = 0; i < least; i++) {
            zeros[i] = '0';
        }
        builder.append(new String(zeros));
        builder.append(number);
        return builder.toString();
    }
public static String fillZero ( long number , int length ) { StringBuilder builder = new StringBuilder ( ) ; int least = length - numberLength ( number ) ; char [ ] zeros = new char [ least ] ; for ( int i = 0 ; i < least ; i ++ ) { zeros [ i ] = ' ' ; } builder . append ( new String ( zeros ) ) ; builder . append ( number ) ; return builder . toString ( ) ; }
填充0 <br>
2013-10-31 下午2:46:15

@param number
@param length
@return
填充0 <br > 2013 - 10 - 31 下午2 : 46 : 15