CustomPatternValidator.java 文件源码

public void initialize(PatternMatchIfNotNullNotEmpty parameters) {
    Pattern.Flag flags[] = parameters.flags();
    int intFlag = 0;
    for ( Pattern.Flag flag : flags ) {
        intFlag = intFlag | flag.getValue();
    }

    String regexp = resolveRegexp(parameters);  
    messageSource = parameters.messageSource();
    messageKey = parameters.messageKey();

    try {
        pattern = java.util.regex.Pattern.compile(regexp, intFlag );
    }
    catch ( PatternSyntaxException e ) {
        throw new IllegalArgumentException( "Invalid regular expression.", e );
    }
}