缓存菜品业务代码开发 + 菜品的起售停售代码修正

sky-server/src/main/java/com/sky/mapper/UserMapper.java

@@ -0,0 +1,25 @@
+package com.sky.mapper;
+
+
+import com.sky.entity.User;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Select;
+
+@Mapper
+public interface UserMapper {
+    /**
+     * 根据openid查询用户
+     *
+     * @param openid
+     * @return
+     */
+    @Select("select * from user where openid = #{openid}")
+    User getByOpenid(String openid);
+
+
+    /**
+     * 插入新用户
+     * @param user
+     */
+    void insert(User user);
+}