补充Entity序列化

src/main/java/cn/quantgroup/xyqb/entity/UserAttached.java

@@ -3,6 +3,7 @@ package cn.quantgroup.xyqb.entity;
 import lombok.Data;
 
 import javax.persistence.*;
+import java.io.Serializable;
 import java.sql.Timestamp;
 
 /**
@@ -11,7 +12,7 @@ import java.sql.Timestamp;
 @Data
 @Entity
 @Table(name = "user_attached")
-public class UserAttached {
+public class UserAttached implements Serializable {
     @Id
     @Column(name = "id")
     @GeneratedValue(strategy = GenerationType.IDENTITY)