新增外键注释

src/main/java/com/example/springdemo/entities/Indent.java

@@ -1,9 +1,11 @@
 package com.example.springdemo.entities;
 
+import jakarta.persistence.*;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
 import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.CreatedDate;
 
 import java.util.Date;
 
@@ -12,13 +14,18 @@ import java.util.Date;
 @Builder
 @NoArgsConstructor
 @AllArgsConstructor
+@Entity
+@Table(name = "Indent")
 public class Indent {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;//订单ID
-
     private Float allPrice;//菜品总价
-    Date createdDate;//订单创建时间
+    @CreatedDate
+    private Date createdDate;//订单创建时间
     private String message;//下单备注
-
+    @OneToOne
     private Users userID;//外键，下单用户ID
+    @OneToOne
     private Merchants merchantsID;//外键，餐厅ID
 }

src/main/java/com/example/springdemo/entities/IndentItem.java

@@ -1,5 +1,6 @@
 package com.example.springdemo.entities;
 
+import jakarta.persistence.*;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
@@ -10,13 +11,18 @@ import lombok.NoArgsConstructor;
 @Builder
 @NoArgsConstructor
 @AllArgsConstructor
+@Entity
 public class IndentItem {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;//主键，菜品ID
     private String name;//菜品名字
+    @Column(name = "initialPrice")
     private Float initialPrice;//菜品原价
     private Float discount;//折扣
+    @Column(name = "finalPrice")
     private Float finalPrice;//最终价格
     private String description;//菜品描述
-
+    @OneToOne
     private Indent indentID;//外键，订单ID
 }

src/main/java/com/example/springdemo/entities/Merchants.java

@@ -1,9 +1,6 @@
 package com.example.springdemo.entities;
 
-import jakarta.persistence.Column;
+import jakarta.persistence.*;
-import jakarta.persistence.Entity;
-import jakarta.persistence.Id;
-import jakarta.persistence.Table;
 import lombok.*;
 
 @Data
@@ -12,18 +9,13 @@ import lombok.*;
 @AllArgsConstructor
 @Entity
 @Table(name = "Merchants")
-
 public class Merchants {
     @Id
-
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;//主键,商家编号
-
     private String name;//店铺名字
-
     private String address;//店铺地址
-
     private String description;//店铺描述
-
     @Column(name = "phoneNumber")
     private String phoneNumber;//商家联系方式