新增getPrincipalProperty方法，用于前端及其他模块获取当前用户信息

ruoyi-common/src/main/java/com/ruoyi/common/utils/security/PermissionUtils.java

@@ -1,6 +1,13 @@
 package com.ruoyi.common.utils.security;
 
+import java.beans.BeanInfo;
+import java.beans.Introspector;
+import java.beans.PropertyDescriptor;
 import org.apache.commons.lang3.StringUtils;
+import org.apache.shiro.SecurityUtils;
+import org.apache.shiro.subject.Subject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import com.ruoyi.common.constant.PermissionConstants;
 import com.ruoyi.common.utils.MessageUtils;
 
@@ -11,6 +18,8 @@ import com.ruoyi.common.utils.MessageUtils;
  */
 public class PermissionUtils
 {
+    private static final Logger log = LoggerFactory.getLogger(PermissionUtils.class);
+
     /**
      * 查看数据的权限
      */
@@ -74,4 +83,36 @@ public class PermissionUtils
         }
         return msg;
     }
+
+    /**
+     * 返回用户属性值
+     *
+     * @param property 属性名称
+     * @return 用户属性值
+     */
+    public static Object getPrincipalProperty(String property)
+    {
+        Subject subject = SecurityUtils.getSubject();
+        if (subject != null)
+        {
+            Object principal = subject.getPrincipal();
+            try
+            {
+                BeanInfo bi = Introspector.getBeanInfo(principal.getClass());
+                for (PropertyDescriptor pd : bi.getPropertyDescriptors())
+                {
+                    if (pd.getName().equals(property) == true)
+                    {
+                        return pd.getReadMethod().invoke(principal, (Object[]) null);
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                log.error("Error reading property [{}] from principal of type [{}]", property,
+                        principal.getClass().getName());
+            }
+        }
+        return null;
+    }
 }