StringUtils.isNotBlank和StringUtils.isNotEmpty

StringUtils.isNotBlank和StringUtils.isNotEmpty

1.StringUtils.isNotBlank：校验字符串是否为"“、null、” "；源码如下：

  		/**
         * <p>Checks if a CharSequence is not empty (""), not null and not whitespace only.</p>
         *
         * <p>Whitespace is defined by {@link Character#isWhitespace(char)}.</p>
         *
         * <pre>
         * StringUtils.isNotBlank(null)      = false
         * StringUtils.isNotBlank("")        = false
         * StringUtils.isNotBlank(" ")       = false
         * StringUtils.isNotBlank("bob")     = true
         * StringUtils.isNotBlank("  bob  ") = true
         * </pre>
         *
         * @param cs  the CharSequence to check, may be null
         * @return {@code true} if the CharSequence is
         *  not empty and not null and not whitespace only
         * @since 2.0
         * @since 3.0 Changed signature from isNotBlank(String) to isNotBlank(CharSequence)
         */
        public static boolean isNotBlank(final CharSequence cs) {
            return !isBlank(cs);
        }

2.StringUtils.isNotEmpty：校验字符串是否为""、null；源码如下：

  	/**
     * <p>Checks if a CharSequence is not empty ("") and not null.</p>
     *
     * <pre>
     * StringUtils.isNotEmpty(null)      = false
     * StringUtils.isNotEmpty("")        = false
     * StringUtils.isNotEmpty(" ")       = true
     * StringUtils.isNotEmpty("bob")     = true
     * StringUtils.isNotEmpty("  bob  ") = true
     * </pre>
     *
     * @param cs  the CharSequence to check, may be null
     * @return {@code true} if the CharSequence is not empty and not null
     * @since 3.0 Changed signature from isNotEmpty(String) to isNotEmpty(CharSequence)
     */
    public static boolean isNotEmpty(final CharSequence cs) {
        return !isEmpty(cs);
    }