创建仓库

src/main/java/vvpkassistant/chat/ChatDao.java

@@ -0,0 +1,16 @@
+package vvpkassistant.chat;
+
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+
+@Mapper
+public interface ChatDao extends BaseMapper<ChatModel> {
+
+    // 根据key_id 查询数据
+    @Select("select * from pk_chat where key_id = #{keyId}")
+    ChatModel selectModelWithKeyId(@Param("keyId") String keyId);
+
+
+}