From 054fd7546f90c7875b6477f807c19f49dc0eb40c Mon Sep 17 00:00:00 2001
From: RuoYi <yzz_ivy@163.com>
Date: Tue, 21 Dec 2021 13:41:40 +0800
Subject: [PATCH] =?UTF-8?q?SQL=E5=B7=A5=E5=85=B7=E7=B1=BB=E6=96=B0?=
 =?UTF-8?q?=E5=A2=9E=E6=A3=80=E6=9F=A5=E5=85=B3=E9=94=AE=E5=AD=97=E6=96=B9?=
 =?UTF-8?q?=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../com/ruoyi/common/core/utils/sql/SqlUtil.java   | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/sql/SqlUtil.java b/ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/sql/SqlUtil.java
index 00a18ef..271b58d 100644
--- a/ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/sql/SqlUtil.java
+++ b/ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/sql/SqlUtil.java
@@ -11,6 +11,11 @@ import com.ruoyi.common.core.utils.StringUtils;
 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 String SQL_PATTERN = "[a-zA-Z0-9_\\ \\,\\.]+";
@@ -34,4 +39,23 @@ public class SqlUtil
     {
         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 (int i = 0; i < sqlKeywords.length; i++)
+        {
+            if (StringUtils.indexOfIgnoreCase(value, sqlKeywords[i]) > -1)
+            {
+                throw new UtilException("参数存在SQL注入风险");
+            }
+        }
+    }
 }