diff --git a/EasStudentMapper.java b/EasStudentMapper.java
new file mode 100644
index 0000000..327bb86
--- /dev/null
+++ b/EasStudentMapper.java
@@ -0,0 +1,42 @@
+package com.jubilantz.mappers;
+
+import com.jubilantz.entity.EasStudent;
+import com.jubilantz.utils.PageUtil;
+import org.apache.ibatis.annotations.Mapper;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.List;
+@Mapper
+public interface EasStudentMapper {
+//    EasStudent getByUsername(String username);
+    //直接查找
+    List<EasStudent> getList (EasStudent easStudent);
+
+    //包含两个一对一关系
+    List<EasStudent> findList(EasStudent easStudent);
+
+    List<EasStudent> findListByUsername(String username);
+
+    EasStudent getStudentByUsername(String username);
+
+    void updateStudent(EasStudent easStudent);
+
+    int getCountBytIdandcId(@Param("tId") Integer tId,@Param("baseCourseId") Integer baseCourseId,@Param("classId") Integer classId);
+
+    int getEndingCountBytIdandcId(@Param("tId") Integer tId,@Param("baseCourseId") Integer baseCourseId,@Param("classId") Integer classId);
+
+    List<EasStudent> getStudentScoreListByTid(@Param("tId") Integer tId,@Param("baseCourseId") Integer baseCourseId,
+                                              @Param("classId") Integer classId,@Param("pageUtil") PageUtil pageUtil);
+
+    List<EasStudent> getStudentSelectCourseListByTid(@Param("tId") Integer tId,@Param("baseCourseId") Integer baseCourseId,
+                                                     @Param("classId") Integer classId,@Param("pageUtil") PageUtil pageUtil);
+
+
+    int getTotal();
+
+    int getTotalSex(String sex);
+
+    void addUsername(String username);
+
+    void deleteStudent(String username);
+}