genericvalidator.java

java验证框架 java验证框架

     * @param min The minimum value of the range.
     * @param max The maximum value of the range.
     * @return true if the value is in the specified range.
     */
    public static boolean isInRange(long value, long min, long max) {
        return ((value >= min) && (value <= max));
    }

    /**
     * <p>Checks if a value is within a range (min &amp; max specified
     * in the vars attribute).</p>
     *
     * @param value The value validation is being performed on.
     * @param min The minimum value of the range.
     * @param max The maximum value of the range.
     * @return true if the value is in the specified range.
     */
    public static boolean isInRange(double value, double min, double max) {
        return ((value >= min) && (value <= max));
    }

    /**
     * Checks if the field is a valid credit card number.
     * @param value The value validation is being performed on.
     * @return true if the value is valid Credit Card Number.
     */
    public static boolean isCreditCard(String value) {
        return CREDIT_CARD_VALIDATOR.isValid(value);
    }

    /**
     * <p>Checks if a field has a valid e-mail address.</p>
     *
     * @param value The value validation is being performed on.
     * @return true if the value is valid Email Address.
     */
    public static boolean isEmail(String value) {
        return EmailValidator.getInstance().isValid(value);
    }

    /**
     * <p>Checks if a field is a valid url address.</p>
     * If you need to modify what is considered valid then
     * consider using the UrlValidator directly.
     *
     * @param value The value validation is being performed on.
     * @return true if the value is valid Url.
     */
    public static boolean isUrl(String value) {
        return URL_VALIDATOR.isValid(value);
    }

    /**
     * <p>Checks if the value's length is less than or equal to the max.</p>
     *
     * @param value The value validation is being performed on.
     * @param max The maximum length.
     * @return true if the value's length is less than the specified maximum.
     */
    public static boolean maxLength(String value, int max) {
        return (value.length() <= max);
    }

    /**
     * <p>Checks if the value's adjusted length is less than or equal to the max.</p>
     *
     * @param value The value validation is being performed on.
     * @param max The maximum length.
     * @param lineEndLength The length to use for line endings.
     * @return true if the value's length is less than the specified maximum.
     */
    public static boolean maxLength(String value, int max, int lineEndLength) {
        int adjustAmount = adjustForLineEnding(value, lineEndLength);
        return ((value.length() + adjustAmount) <= max);
    }

    /**
     * <p>Checks if the value's length is greater than or equal to the min.</p>
     *
     * @param value The value validation is being performed on.
     * @param min The minimum length.
     * @return true if the value's length is more than the specified minimum.
     */
    public static boolean minLength(String value, int min) {
        return (value.length() >= min);
    }

    /**
     * <p>Checks if the value's adjusted length is greater than or equal to the min.</p>
     *
     * @param value The value validation is being performed on.
     * @param min The minimum length.
     * @param lineEndLength The length to use for line endings.
     * @return true if the value's length is more than the specified minimum.
     */
    public static boolean minLength(String value, int min, int lineEndLength) {
        int adjustAmount = adjustForLineEnding(value, lineEndLength);
        return ((value.length() + adjustAmount) >= min);
    }

    /**
     * Calculate an adjustment amount for line endings.
     *
     * See Bug 37962 for the rational behind this.
     *
     * @param value The value validation is being performed on.
     * @param lineEndLength The length to use for line endings.
     * @return the adjustment amount.
     */
    private static int adjustForLineEnding(String value, int lineEndLength) {
        int nCount = 0;
        int rCount = 0;
        for (int i = 0; i < value.length(); i++) {
            if (value.charAt(i) == '\n') {
                nCount++;
            }
            if (value.charAt(i) == '\r') {
                rCount++;
            }
        }
        return ((nCount * lineEndLength) - (rCount + nCount));
    }
    
    // See http://issues.apache.org/bugzilla/show_bug.cgi?id=29015 WRT the "value" methods

    /**
     * <p>Checks if the value is greater than or equal to the min.</p>
     *
     * @param value The value validation is being performed on.
     * @param min The minimum numeric value.
     * @return true if the value is &gt;= the specified minimum.
     */
    public static boolean minValue(int value, int min) {
        return (value >= min);
    }

    /**
     * <p>Checks if the value is greater than or equal to the min.</p>
     *
     * @param value The value validation is being performed on.
     * @param min The minimum numeric value.
     * @return true if the value is &gt;= the specified minimum.
     */
    public static boolean minValue(long value, long min) {
        return (value >= min);
    }

    /**
     * <p>Checks if the value is greater than or equal to the min.</p>
     *
     * @param value The value validation is being performed on.
     * @param min The minimum numeric value.
     * @return true if the value is &gt;= the specified minimum.
     */
    public static boolean minValue(double value, double min) {
        return (value >= min);
    }

    /**
     * <p>Checks if the value is greater than or equal to the min.</p>
     *
     * @param value The value validation is being performed on.
     * @param min The minimum numeric value.
     * @return true if the value is &gt;= the specified minimum.
     */
    public static boolean minValue(float value, float min) {
        return (value >= min);
    }

    /**
     * <p>Checks if the value is less than or equal to the max.</p>
     *
     * @param value The value validation is being performed on.
     * @param max The maximum numeric value.
     * @return true if the value is &lt;= the specified maximum.
     */
    public static boolean maxValue(int value, int max) {
        return (value <= max);
    }

    /**
     * <p>Checks if the value is less than or equal to the max.</p>
     *
     * @param value The value validation is being performed on.
     * @param max The maximum numeric value.
     * @return true if the value is &lt;= the specified maximum.
     */
    public static boolean maxValue(long value, long max) {
        return (value <= max);
    }

    /**
     * <p>Checks if the value is less than or equal to the max.</p>
     *
     * @param value The value validation is being performed on.
     * @param max The maximum numeric value.
     * @return true if the value is &lt;= the specified maximum.
     */
    public static boolean maxValue(double value, double max) {
        return (value <= max);
    }

    /**
     * <p>Checks if the value is less than or equal to the max.</p>
     *
     * @param value The value validation is being performed on.
     * @param max The maximum numeric value.
     * @return true if the value is &lt;= the specified maximum.
     */
    public static boolean maxValue(float value, float max) {
        return (value <= max);
    }

}