diff --git a/servers/boe-server-all/src/main/java/com/xboe/module/course/entity/Tip.java b/servers/boe-server-all/src/main/java/com/xboe/module/course/entity/Tip.java
index 6b8cca8f..2f664561 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/module/course/entity/Tip.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/module/course/entity/Tip.java
@@ -3,9 +3,11 @@ package com.xboe.module.course.entity;
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.xboe.core.SysConstant;
 import lombok.Data;
-import org.hibernate.annotations.Entity;
+import lombok.EqualsAndHashCode;
 
+import javax.persistence.Entity;
 import javax.persistence.Column;
+import javax.persistence.Id;
 import javax.persistence.Table;
 import java.time.LocalDateTime;
 
@@ -15,11 +17,12 @@ import java.time.LocalDateTime;
  */
 @Data
 @Entity
+@EqualsAndHashCode(callSuper = false)
 @Table(name = "tip")
 public class Tip {
-
+    @Id
     @Column(name = "id", length = 20)
-    private String id;
+    private Long id;
 
     @Column(name = "aid", length = 30)
     private String aid;