diff --git a/资产系统开发笔记.md b/资产系统开发笔记.md
index 48f75af..17c26dc 100644
--- a/资产系统开发笔记.md
+++ b/资产系统开发笔记.md
@@ -110,7 +110,7 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
 
 1. 创建一个CaptchaFilter类用于验证验证码：
 
-```
+```java
 Copy code
 public class CaptchaFilter extends OncePerRequestFilter {