diff --git a/project/src/main/java/cyou/chenx221/dao/impl/AdminDaoImpl.java b/project/src/main/java/cyou/chenx221/dao/impl/AdminDaoImpl.java
index 8c3baca..d790d22 100644
--- a/project/src/main/java/cyou/chenx221/dao/impl/AdminDaoImpl.java
+++ b/project/src/main/java/cyou/chenx221/dao/impl/AdminDaoImpl.java
@@ -2,37 +2,47 @@ package cyou.chenx221.dao.impl;
 
 import cyou.chenx221.dao.AdminDao;
 import cyou.chenx221.modal.Admin;
+import org.apache.ibatis.session.SqlSession;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
 
 import java.util.List;
 
+@Repository
 public class AdminDaoImpl implements AdminDao {
+    private final SqlSession sqlSession;
+
+    public AdminDaoImpl(SqlSession sqlSession) {
+        this.sqlSession = sqlSession;
+    }
+
     @Override
     public void addAdmin(Admin admin) {
-
+        sqlSession.insert("AdminMapper.addAdmin", admin);
     }
 
     @Override
     public void updateAdmin(Admin admin) {
-
+        sqlSession.update("AdminMapper.updateAdmin", admin);
     }
 
     @Override
     public void deleteAdmin(int adminId) {
-
+        sqlSession.delete("AdminMapper.deleteAdmin", adminId);
     }
 
     @Override
     public Admin getAdminById(int adminId) {
-        return null;
+        return sqlSession.selectOne("AdminMapper.getAdminById", adminId);
     }
 
     @Override
     public Admin getAdminByUsername(String username) {
-        return null;
+        return sqlSession.selectOne("AdminMapper.getAdminByUsername", username);
     }
 
     @Override
     public List<Admin> getAllAdmins() {
-        return null;
+        return sqlSession.selectList("AdminMapper.getAllAdmins");
     }
 }
diff --git a/project/src/main/java/cyou/chenx221/dao/impl/ScoreDaoImpl.java b/project/src/main/java/cyou/chenx221/dao/impl/ScoreDaoImpl.java
index ff52e1b..c6e857a 100644
--- a/project/src/main/java/cyou/chenx221/dao/impl/ScoreDaoImpl.java
+++ b/project/src/main/java/cyou/chenx221/dao/impl/ScoreDaoImpl.java
@@ -2,42 +2,51 @@ package cyou.chenx221.dao.impl;
 
 import cyou.chenx221.dao.ScoreDao;
 import cyou.chenx221.modal.Score;
+import org.apache.ibatis.session.SqlSession;
+import org.springframework.stereotype.Repository;
 
 import java.util.List;
 
+@Repository
 public class ScoreDaoImpl implements ScoreDao {
+    private final SqlSession sqlSession;
+
+    public ScoreDaoImpl(SqlSession sqlSession) {
+        this.sqlSession = sqlSession;
+    }
+
     @Override
     public void addScore(Score score) {
-
+        sqlSession.insert("ScoreMapper.addScore", score);
     }
 
     @Override
     public void updateScore(Score score) {
-
+        sqlSession.update("ScoreMapper.updateScore", score);
     }
 
     @Override
     public void deleteScore(int scoreId) {
-
+        sqlSession.delete("ScoreMapper.deleteScore", scoreId);
     }
 
     @Override
     public Score getScoreById(int scoreId) {
-        return null;
+        return sqlSession.selectOne("ScoreMapper.getScoreById", scoreId);
     }
 
     @Override
     public List<Score> getScoresByStudentId(int studentId) {
-        return null;
+        return sqlSession.selectList("ScoreMapper.getScoresByStudentId", studentId);
     }
 
     @Override
     public List<Score> getScoresByCourse(String course) {
-        return null;
+        return sqlSession.selectList("ScoreMapper.getScoresByCourse", course);
     }
 
     @Override
     public List<Score> getAllScores() {
-        return null;
+        return sqlSession.selectList("ScoreMapper.getAllScores");
     }
 }