refactor: 清理代码、优化结构

- 移除订阅消息相关代码(WxSubscribeMessageService、subscribeTemplateId配置)
- 提取Result类为独立公共类(common.Result)
- 拆分Controller: WxLoginController(登录) + AppointmentController(预约)
- 引入Lombok(@Data/@Slf4j/@RequiredArgsConstructor)消除样板代码
- 修正WxLoginResult字段命名(session_key->sessionKey+@JsonProperty)
- MySQL驱动升级mysql-connector-java->mysql-connector-j
- updateStatus SQL增加status='pending'校验防并发重复审批
- pom.xml配置spring-boot-maven-plugin排除lombok

src/main/resources/mapper/VisitApplicationMapper.xml

@@ -18,16 +18,60 @@
         <result column="create_time" property="createTime"/>
     </resultMap>
 
+    <sql id="Base_Column_List">
+        id, name, phone, company, reason,
+        DATE_FORMAT(visit_date, '%Y-%m-%d') AS visit_date,
+        DATE_FORMAT(visit_time, '%H:%i') AS visit_time,
+        host_name, area, status, status_text, openid,
+        DATE_FORMAT(create_time, '%Y-%m-%dT%H:%i:%s.000+00:00') AS create_time
+    </sql>
+
     <select id="selectLatestByOpenid" resultMap="BaseResultMap">
-        SELECT id, name, phone, company, reason,
-               DATE_FORMAT(visit_date, '%Y-%m-%d') AS visit_date,
-               DATE_FORMAT(visit_time, '%H:%i') AS visit_time,
-               host_name, area, status, status_text, openid,
-               DATE_FORMAT(create_time, '%Y-%m-%dT%H:%i:%s.000+00:00') AS create_time
+        SELECT <include refid="Base_Column_List"/>
         FROM visit_application
         WHERE openid = #{openid}
         ORDER BY create_time DESC
         LIMIT 1
     </select>
 
+    <select id="selectListByOpenid" resultMap="BaseResultMap">
+        SELECT <include refid="Base_Column_List"/>
+        FROM visit_application
+        WHERE openid = #{openid}
+        ORDER BY create_time DESC
+    </select>
+
+    <select id="selectByIdAndOpenid" resultMap="BaseResultMap">
+        SELECT <include refid="Base_Column_List"/>
+        FROM visit_application
+        WHERE id = #{id} AND openid = #{openid}
+    </select>
+
+    <insert id="insert">
+        INSERT INTO visit_application (id, name, phone, company, reason,
+            visit_date, visit_time, host_name, area,
+            status, status_text, openid, create_time)
+        VALUES (#{id}, #{name}, #{phone}, #{company}, #{reason},
+            #{visitDate}, #{visitTime}, #{hostName}, #{area},
+            #{status}, #{statusText}, #{openid}, NOW())
+    </insert>
+
+    <update id="updateStatusToCancelled">
+        UPDATE visit_application
+        SET status = 'cancelled', status_text = '已取消'
+        WHERE id = #{id} AND openid = #{openid} AND status = 'pending'
+    </update>
+
+    <select id="selectById" resultMap="BaseResultMap">
+        SELECT <include refid="Base_Column_List"/>
+        FROM visit_application
+        WHERE id = #{id}
+    </select>
+
+    <update id="updateStatus">
+        UPDATE visit_application
+        SET status = #{status}, status_text = #{statusText}
+        WHERE id = #{id} AND status = 'pending'
+    </update>
+
 </mapper>