From 210d75be8e8678e4351b1494ac8779bd655afc65 Mon Sep 17 00:00:00 2001
From: Awen <39176130+yu1183688986@users.noreply.github.com>
Date: Sun, 30 Jan 2022 21:45:20 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E4=BA=86@xss=E6=B3=A8?=
 =?UTF-8?q?=E8=A7=A3=E5=AD=97=E6=AE=B5=E5=80=BC=E4=B8=BAnull=E6=97=B6?=
 =?UTF-8?q?=E7=9A=84=E7=A9=BA=E6=8C=87=E9=92=88=E5=BC=82=E5=B8=B8=E9=97=AE?=
 =?UTF-8?q?=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../src/main/java/com/ruoyi/common/xss/XssValidator.java   | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/xss/XssValidator.java b/ruoyi-common/src/main/java/com/ruoyi/common/xss/XssValidator.java
index 43163721d..ce327e37e 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/xss/XssValidator.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/xss/XssValidator.java
@@ -12,15 +12,18 @@ import java.util.regex.Pattern;
  */
 public class XssValidator implements ConstraintValidator<Xss, String>
 {
-    private final String HTML_PATTERN = "<(\\S*?)[^>]*>.*?|<.*? />";
+    private static final String HTML_PATTERN = "<(\\S*?)[^>]*>.*?|<.*? />";
 
     @Override
     public boolean isValid(String value, ConstraintValidatorContext constraintValidatorContext)
     {
+        if (StringUtils.isBlank(value)){
+            return true;
+        }
         return !containsHtml(value);
     }
 
-    public boolean containsHtml(String value)
+    public static boolean containsHtml(String value)
     {
         Pattern pattern = Pattern.compile(HTML_PATTERN);
         Matcher matcher = pattern.matcher(value);