org.apache.commons.lang3.math.NumberUtils#createLong ( )源码实例Demo

@Inject
public ArchivaRuntimeInfo( @Named( value = "archivaRuntimeProperties" ) Properties archivaRuntimeProperties )
{
    this.version = (String) archivaRuntimeProperties.get( "archiva.version" );
    this.buildNumber = (String) archivaRuntimeProperties.get( "archiva.buildNumber" );
    String archivaTimeStamp = (String) archivaRuntimeProperties.get( "archiva.timestamp" );
    if ( NumberUtils.isNumber( archivaTimeStamp ) )
    {
        this.timestamp = NumberUtils.createLong( archivaTimeStamp );
    }
    else
    {
        this.timestamp = new Date().getTime();
    }
    this.devMode = Boolean.getBoolean( "archiva.devMode" );
}
 

/**
 * Given a long integer string, it checks if it's a valid long integer (based on apaches NumberUtils.createLong)
 *
 * @param longStr the long integer string to check
 * @return true if it's valid, otherwise false
 */
public static boolean isValidLong(@Nullable final String longStr) {
    if (StringUtils.isBlank(longStr)) {
        return false;
    }
    final String stripedLong = StringUtils.strip(longStr);
    try {
        NumberUtils.createLong(stripedLong);
        return true;
    } catch (NumberFormatException e) {
        return false;
    }
}
 

/**
 * Given a long integer string if it's a valid long (see isValidLong) it converts it into a long integer otherwise it throws an exception
 *
 * @param longStr the long integer to convert
 * @return the long integer value of the longStr
 * @throws IllegalArgumentException if the passed long integer string is not a valid long value
 */
public static long toLong(@Nullable final String longStr) {
    if (!isValidLong(longStr)) {
        throw new IllegalArgumentException(longStr + ExceptionValues.EXCEPTION_DELIMITER + ExceptionValues.INVALID_LONG_VALUE);
    }
    final String stripedLong = StringUtils.strip(longStr);
    return NumberUtils.createLong(stripedLong);
}