feat(dormitory): 添加学生信息字段及关联查询

- 在 DormitoryBed 实体中新增学生昵称、手机号和头像字段
- 修改 DormitoryBedMapper.xml 关联查询 SQL
- 增加与 shop_user 表的左连接以获取学生详细信息
- 查询结果中包含学生真实姓名、电话和头像信息

src/main/java/com/gxwebsoft/dormitory/entity/DormitoryBed.java

@@ -55,6 +55,18 @@ public class DormitoryBed implements Serializable {
     @Schema(description = "学生ID")
     private Integer userId;
 
+    @Schema(description = "学生昵称")
+    @TableField(exist = false)
+    private String realName;
+
+    @Schema(description = "手机号码")
+    @TableField(exist = false)
+    private String phone;
+
+    @Schema(description = "头像")
+    @TableField(exist = false)
+    private String avatar;
+
     @Schema(description = "上下铺 1下铺 2上铺 0无")
     private Boolean bunk;
 

src/main/java/com/gxwebsoft/dormitory/mapper/xml/DormitoryBedMapper.xml

@@ -4,11 +4,12 @@
 
     <!-- 关联查询sql -->
     <sql id="selectSql">
-        SELECT a.*, b.name AS buildingName, c.name AS floorName, d.name AS recordName
+        SELECT a.*, b.name AS buildingName, c.name AS floorName, d.name AS recordName, e.real_name AS realName, e.phone AS phone, e.avatar
         FROM dormitory_bed a
         LEFT JOIN dormitory_building b ON a.building_id = b.id
         LEFT JOIN dormitory_floor c ON a.floor_id = c.id
         LEFT JOIN dormitory_record d ON a.record_id = d.id
+        LEFT JOIN shop_user e ON a.user_id = e.user_id
         <where>
             <if test="param.id != null">
                 AND a.id = #{param.id}