Method filter

src/main/java/com/opslab/helper/WebHelper.java:156–199

过滤特殊字符

(String value)

     * 过滤特殊字符
     */
    public static String filter(String value) {
        if (value == null) {
            return null;
        }
        StringBuffer result = new StringBuffer(value.length());
        for (int i = 0; i < value.length(); ++i) {
            switch (value.charAt(i)) {
                case '<':
                    result.append("<");
                    break;
                case '>':
                    result.append(">");
                    break;
                case '"':
                    result.append("\"");
                    break;
                case '\'':
                    result.append("'");
                    break;
                case '%':
                    result.append("%");
                    break;
                case ';':
                    result.append(";");
                    break;
                case '(':
                    result.append("(");
                    break;
                case ')':
                    result.append(")");
                    break;
                case '&':
                    result.append("&");
                    break;
                case '+':
                    result.append("+");
                    break;
                default:
                    result.append(value.charAt(i));
                    break;
            }
        }
        return result.toString();
    }
}