更新联系人相关功能：添加联系人控制器、服务层和Mapper实现

src/main/resources/com/bao/dating/mapper/ContactMapper.xml

@@ -21,5 +21,29 @@
           AND c.relation_type != 3  -- 排除黑名单
           AND c.user_id != c.contact_user_id -- 排除自己
     </select>
+
+
+    <!-- 拉黑联系人：更新relation_type为3（黑名单）、contact_status为3（已拉黑） -->
+    <update id="blacklistContact">
+        UPDATE contacts
+        SET relation_type = 3,
+            contact_status = 3,
+            updated_at = CURRENT_TIMESTAMP
+        WHERE user_id = #{userId}
+          AND contact_user_id = #{contactUserId}
+          AND contact_status != 2
+    </update>
+
+    <!-- 删除联系人：更新contact_status为2（已删除） -->
+    <update id="deleteContact">
+        UPDATE contacts
+        SET contact_status = 2,
+            updated_at = CURRENT_TIMESTAMP
+        WHERE user_id = #{userId}
+          AND contact_user_id = #{contactUserId}
+          AND contact_status != 2
+    </update>
 </mapper>
 
+
+