From 0208c795499b808c762edbb3d61432410692dd6e Mon Sep 17 00:00:00 2001
From: chenhj <chenhj@lunor.cn>
Date: 星期六, 24 五月 2025 14:50:15 +0800
Subject: [PATCH] Merge pull request 'chen' (#7) from chen into master
---
ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java | 70 +++++++++++++++++++++++++++++++++++
1 files changed, 70 insertions(+), 0 deletions(-)
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java
new file mode 100644
index 0000000..48720dc
--- /dev/null
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/sql/SqlUtil.java
@@ -0,0 +1,70 @@
+package com.ruoyi.common.utils.sql;
+
+import com.ruoyi.common.exception.UtilException;
+import com.ruoyi.common.utils.StringUtils;
+
+/**
+ * sql鎿嶄綔宸ュ叿绫�
+ *
+ * @author ruoyi
+ */
+public class SqlUtil
+{
+ /**
+ * 瀹氫箟甯哥敤鐨� sql鍏抽敭瀛�
+ */
+ public static String SQL_REGEX = "\u000B|and |extractvalue|updatexml|sleep|exec |insert |select |delete |update |drop |count |chr |mid |master |truncate |char |declare |or |union |like |+|/*|user()";
+
+ /**
+ * 浠呮敮鎸佸瓧姣嶃�佹暟瀛椼�佷笅鍒掔嚎銆佺┖鏍笺�侀�楀彿銆佸皬鏁扮偣锛堟敮鎸佸涓瓧娈垫帓搴忥級
+ */
+ public static String SQL_PATTERN = "[a-zA-Z0-9_\\ \\,\\.]+";
+
+ /**
+ * 闄愬埗orderBy鏈�澶ч暱搴�
+ */
+ private static final int ORDER_BY_MAX_LENGTH = 500;
+
+ /**
+ * 妫�鏌ュ瓧绗︼紝闃叉娉ㄥ叆缁曡繃
+ */
+ public static String escapeOrderBySql(String value)
+ {
+ if (StringUtils.isNotEmpty(value) && !isValidOrderBySql(value))
+ {
+ throw new UtilException("鍙傛暟涓嶇鍚堣鑼冿紝涓嶈兘杩涜鏌ヨ");
+ }
+ if (StringUtils.length(value) > ORDER_BY_MAX_LENGTH)
+ {
+ throw new UtilException("鍙傛暟宸茶秴杩囨渶澶ч檺鍒讹紝涓嶈兘杩涜鏌ヨ");
+ }
+ return value;
+ }
+
+ /**
+ * 楠岃瘉 order by 璇硶鏄惁绗﹀悎瑙勮寖
+ */
+ public static boolean isValidOrderBySql(String value)
+ {
+ return value.matches(SQL_PATTERN);
+ }
+
+ /**
+ * SQL鍏抽敭瀛楁鏌�
+ */
+ 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("鍙傛暟瀛樺湪SQL娉ㄥ叆椋庨櫓");
+ }
+ }
+ }
+}
--
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