添加了ResultProjectGroup实体类

src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/entity/query/ResultProjectGroup.java

@@ -0,0 +1,17 @@
+package cn.edu.hfut.rmdjzz.projectmanagement.entity.query;
+
+import lombok.Data;
+
+/**
+ * @author 史鹏辉
+ * @since 2022/7/7 9:07
+ */
+
+@Data
+public class ResultProjectGroup {
+    Integer staffId;
+    String staffFullname;
+    Integer projectId;
+    String projectStaffPosition;
+    Integer projectAccessLevel;
+}

src/main/java/cn/edu/hfut/rmdjzz/projectmanagement/mapper/ProjectGroupMapper.java

@@ -2,6 +2,8 @@ package cn.edu.hfut.rmdjzz.projectmanagement.mapper;
 
 import cn.edu.hfut.rmdjzz.projectmanagement.entity.ProjectGroup;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
 
 /**
  * @author 张韬