diff --git a/sqlite.db b/sqlite.db
index a134c69..41f4324 100644
Binary files a/sqlite.db and b/sqlite.db differ
diff --git a/src/main/java/com/louzin/structure/dao/UserDao.java b/src/main/java/com/louzin/structure/dao/UserDao.java
index 99baf88..50f4671 100644
--- a/src/main/java/com/louzin/structure/dao/UserDao.java
+++ b/src/main/java/com/louzin/structure/dao/UserDao.java
@@ -7,4 +7,5 @@ import java.util.List;
 public interface UserDao {
     List<User> selectAll();
     Integer insert(User user);
+    User selectByNamePassword(User user);
 }
diff --git a/src/main/java/com/louzin/structure/dao/impl/UserDaoImpl.java b/src/main/java/com/louzin/structure/dao/impl/UserDaoImpl.java
index 004aad0..a204483 100644
--- a/src/main/java/com/louzin/structure/dao/impl/UserDaoImpl.java
+++ b/src/main/java/com/louzin/structure/dao/impl/UserDaoImpl.java
@@ -24,6 +24,27 @@ public class UserDaoImpl implements UserDao {
     }
     @Override
     public Integer insert(User user) {
-        return null;
+        try(SqlSession session=MyBatisUtil.getSqlSession()) {
+            UserDao mapper=session.getMapper(UserDao.class);
+            Integer result=mapper.insert(user);
+            session.commit();
+            return result;
+        }catch (Exception e){
+            System.out.println(e);
+        }
+        return 0;
+    }
+
+    @Override
+    public User selectByNamePassword(User user) {
+        User puser=null;
+        try(SqlSession session=MyBatisUtil.getSqlSession()){
+            UserDao mapper=session.getMapper(UserDao.class);
+            puser= (User) mapper.selectByNamePassword(user);
+        }catch (Exception e){
+            System.out.println(e);
+            return null;
+        }
+        return puser;
     }
 }
diff --git a/src/main/java/com/louzin/structure/pojo/User.java b/src/main/java/com/louzin/structure/pojo/User.java
index eeedaaa..5ec802b 100644
--- a/src/main/java/com/louzin/structure/pojo/User.java
+++ b/src/main/java/com/louzin/structure/pojo/User.java
@@ -37,6 +37,10 @@ public class User {
         this.username = username;
         this.password = password;
     }
+    public User(String username, String password) {
+        this.username = username;
+        this.password = password;
+    }
 
     @Override
     public String toString() {
diff --git a/src/main/java/com/louzin/structure/util/test.java b/src/main/java/com/louzin/structure/util/test.java
index 8103fc0..8043187 100644
--- a/src/main/java/com/louzin/structure/util/test.java
+++ b/src/main/java/com/louzin/structure/util/test.java
@@ -39,4 +39,12 @@ public class test {
         List<User> list = new UserDaoImpl().selectAll();
         return list;
     }
+    @Test
+    public void testInsert(){
+//        System.out.println(
+//                new UserDaoImpl().insert(
+//                        new User("test","12ters")));
+        System.out.println(new UserDaoImpl().selectAll());
+//        System.out.println(new UserDaoImpl().selectByNam  ePassword(new User("louzin","123456")));
+    }
 }
diff --git a/src/main/resources/mapper/UserMapper.xml b/src/main/resources/mapper/UserMapper.xml
index e84b2e1..cfb4a33 100644
--- a/src/main/resources/mapper/UserMapper.xml
+++ b/src/main/resources/mapper/UserMapper.xml
@@ -6,4 +6,10 @@
     <select id="selectAll" resultType="User">
         select * from user
     </select>
+    <insert id="insert" useGeneratedKeys="true">
+        insert into user(username,password) values (#{username},#{password})
+    </insert>
+    <select id="selectByNamePassword" resultType="User">
+        select * from user where username=#{username} and password=#{password}
+    </select>
 </mapper>
\ No newline at end of file