ADD file via upload

flower_back/src/main/java/com/example/flower/mapper/ImSingleDao.java

@@ -0,0 +1,28 @@
+package com.example.flower.mapper;
+
+import com.example.flower.entity.ImSingle;
+import org.apache.ibatis.annotations.Insert;
+import org.apache.ibatis.annotations.Update;
+import tk.mybatis.mapper.common.Mapper;
+import org.apache.ibatis.annotations.Select;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@org.apache.ibatis.annotations.Mapper
+@Repository
+public interface ImSingleDao extends Mapper<ImSingle> {
+
+	@Select("select * from imsingle where (fromuser = #{fromUser} and touser = #{toUser}) or (fromuser = #{toUser} and touser = #{fromUser})")
+	List<ImSingle> findByUsername(String fromUser, String toUser);
+
+	@Select("select * from imsingle where touser = #{toUser} and readed = 0")
+	List<ImSingle> findByToUsername(String toUser);
+
+	@Insert("insert into flower.imsingle(id,content,fromuser,fromavatar,time,type,touser,toavatar,readed) " +
+			"value (#{id},#{content},#{fromuser},#{fromavatar},#{time},#{type},#{touser},#{toavatar},#{readed})")
+	int insert(ImSingle imSingle);
+
+	@Update("update flower.imsingle set readed=#{readed} where id = #{id}")
+	void updateById(ImSingle imSingle);
+}