试探性写了一两个接口

src/main/java/com/yingxin/beijingvehicleflow/dto/ReservationsDisplayDTO.java

@@ -12,7 +12,9 @@ import lombok.Data;
 @Data
 public class ReservationsDisplayDTO {
 
+    private int reservationId;
     private String name;
     private String toBeijingDate;
     private String submitCoordinate;
+    private int identityId;
 }

src/main/java/com/yingxin/beijingvehicleflow/mapper/IdentityInformationMapper.java

@@ -44,6 +44,7 @@ public interface IdentityInformationMapper {
     @Select("select * from identity_information where wechat_openid = #{openid}")
     IdentityInformation getAllInfoByOpenid(String openid);
 
-    @Select("select info.name,info.toBeijing_date,r.submit_coordinate from identity_information AS info LEFT JOIN reservation AS r ON info.id=r.identity_id WHERE info.id = #{id} ")
+    @Select("select r.id as reservationId,info.name,info.toBeijing_date,r.submit_coordinate,r.identity_id " +
+            "from identity_information AS info LEFT JOIN reservation AS r ON info.id=r.identity_id WHERE info.id = #{id} ")
     List<ReservationsDisplayDTO> selectReservatinsByIdentityId(IdentityInformation info);
 }