ADD file via upload

blogserver/src/main/java/org/sang/utils/Util.java

@@ -0,0 +1,12 @@
+package org.sang.utils;
+
+import org.sang.bean.User;
+import org.springframework.security.core.context.SecurityContextHolder;
+
+
+public class Util {
+    public static User getCurrentUser() {
+        User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
+        return user;
+    }
+}