From e26af85e049516e6ce2b082bc2bc90bf71643e95 Mon Sep 17 00:00:00 2001
From: 13693261870 <252740454@qq.com>
Date: 星期五, 24 三月 2023 09:06:30 +0800
Subject: [PATCH] 1

---
 src/main/java/com/lf/server/helper/StringHelper.java |   19 ++++++++++++-------
 1 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/src/main/java/com/lf/server/helper/StringHelper.java b/src/main/java/com/lf/server/helper/StringHelper.java
index fd87b7f..d9e83ba 100644
--- a/src/main/java/com/lf/server/helper/StringHelper.java
+++ b/src/main/java/com/lf/server/helper/StringHelper.java
@@ -123,16 +123,16 @@
     }
 
     /**
-     * 鑾峰彇 like 瀛楃涓�-2
+     * 鑾峰彇 like 瀛楃涓�
      */
-    public static String getLikeStr2(String str) {
-        return StringHelper.isEmpty(str) ? "%" : "%" + str.trim() + "%";
+    public static String getLikeUpperStr(String str) {
+        return StringHelper.isEmpty(str) ? null : "%" + str.trim().toUpperCase() + "%";
     }
 
     /**
-     * 鑾峰彇 宸ike 瀛楃涓�
+     * 鑾峰彇 鍙砽ike 瀛楃涓�
      */
-    public static String getLeftLike(String str) {
+    public static String getRightLike(String str) {
         return StringHelper.isEmpty(str) ? null : str.trim() + "%";
     }
 
@@ -171,6 +171,10 @@
      * @return 鏄�/鍚�
      */
     public static boolean isSqlInjection(String str) {
+        if (null == str) {
+            return false;
+        }
+
         Matcher m = sqlPattern.matcher(str);
 
         return m.matches();
@@ -215,8 +219,9 @@
             }
         }
 
-        if (sb.length() > 0 && sb.lastIndexOf(join) == sb.length() - 1) {
-            sb.deleteCharAt(sb.length() - 1);
+        if (sb.length() > 0 && sb.lastIndexOf(join) == sb.length() - join.length()) {
+            // 鍒犻櫎浠庣储寮� start 寮�濮嬪埌 end 涔嬮棿鐨勫瓧绗︼紝鍗� 鍓嶅寘鎷� 鍚庝笉鍖呮嫭銆�
+            sb.delete(sb.length() - join.length(), sb.length());
         }
 
         return sb.toString();

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