| | |
| | | */ |
| | | @NoArgsConstructor(access = AccessLevel.PRIVATE) |
| | | public class SqlUtil { |
| | | |
| | | /** |
| | | * 定义常用的 sql关键字 |
| | | */ |
| | | public static String SQL_REGEX = "select |insert |delete |update |drop |count |exec |chr |mid |master |truncate |char |and |declare "; |
| | | |
| | | /** |
| | | * 仅支持字母、数字、下划线、空格、逗号、小数点(支持多个字段排序) |
| | | */ |
| | |
| | | public static boolean isValidOrderBySql(String value) { |
| | | return value.matches(SQL_PATTERN); |
| | | } |
| | | |
| | | /** |
| | | * SQL关键字检查 |
| | | */ |
| | | public static void filterKeyword(String value) { |
| | | if (StringUtils.isEmpty(value)) { |
| | | return; |
| | | } |
| | | String[] sqlKeywords = StringUtils.split(SQL_REGEX, "\\|"); |
| | | for (String sqlKeyword : sqlKeywords) { |
| | | if (StringUtils.indexOfIgnoreCase(value, sqlKeyword) > -1) { |
| | | throw new UtilException("参数存在SQL注入风险"); |
| | | } |
| | | } |
| | | } |
| | | } |