update 增加赞助商

README.md

@@ -34,6 +34,7 @@ CCFlow 驰聘低代码-流程-表单 - https://gitee.com/opencc/RuoYi-JFlow <br>
 数舵科技 软件定制开发APP小程序等 - http://www.shuduokeji.com/ <br>
 引迈信息 软件开发平台 - https://www.jnpfsoft.com/index.html?from=plus-doc <br>
 <font color="red">**启山商城系统 多租户商城源码可免费商用可二次开发 - https://www.73app.cn/** </font><br>
+Mall4J 高质量Java商城系统 - https://www.mall4j.com/cn/?statId=11 <br>
 [如何成为赞助商 加群联系作者详谈](https://plus-doc.dromara.org/#/common/add_group)
 
 # 本框架与RuoYi的功能差异

ruoyi-common/ruoyi-common-core/src/main/java/org/dromara/common/core/domain/model/RegisterBody.java

@@ -18,14 +18,14 @@ public class RegisterBody extends LoginBody {
      * 用户名
      */
     @NotBlank(message = "{user.username.not.blank}")
-    @Length(min = 2, max = 20, message = "{user.username.length.valid}")
+    @Length(min = 2, max = 30, message = "{user.username.length.valid}")
     private String username;
 
     /**
      * 用户密码
      */
     @NotBlank(message = "{user.password.not.blank}")
-    @Length(min = 5, max = 20, message = "{user.password.length.valid}")
+    @Length(min = 5, max = 30, message = "{user.password.length.valid}")
     private String password;
 
     private String userType;