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@ -12,6 +12,12 @@ import lombok.NoArgsConstructor;
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*/
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@NoArgsConstructor(access = AccessLevel.PRIVATE)
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public class SqlUtil {
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/**
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* 定义常用的 sql关键字
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*/
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public static String SQL_REGEX = "select |insert |delete |update |drop |count |exec |chr |mid |master |truncate |char |and |declare ";
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/**
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* 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)
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*/
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@ -33,4 +39,19 @@ public class SqlUtil {
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public static boolean isValidOrderBySql(String value) {
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return value.matches(SQL_PATTERN);
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}
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/**
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* SQL关键字检查
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*/
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public static void filterKeyword(String value) {
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if (StringUtils.isEmpty(value)) {
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return;
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}
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String[] sqlKeywords = StringUtils.split(SQL_REGEX, "\\|");
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for (String sqlKeyword : sqlKeywords) {
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if (StringUtils.indexOfIgnoreCase(value, sqlKeyword) > -1) {
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throw new UtilException("参数存在SQL注入风险");
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}
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}
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}
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}
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