diff --git a/src/main/java/com/service/impl/DeptServiceImpl.java b/src/main/java/com/service/impl/DeptServiceImpl.java
new file mode 100644
index 0000000..9d845d1
--- /dev/null
+++ b/src/main/java/com/service/impl/DeptServiceImpl.java
@@ -0,0 +1,68 @@
+package com.service.impl;
+
+import com.dao.IDepartmentDao;
+import com.entity.Department;
+import com.service.IDeptService;
+import com.utils.Page;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import javax.management.ObjectName;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @ClassName DeptServiceImpl
+ * @Description TODO
+ * @Author YHT
+ * @Date 2021/5/30 16:02
+ */
+@Service
+public class DeptServiceImpl implements IDeptService {
+    @Autowired
+    private IDepartmentDao departmentDao;
+    @Override
+    public List<Department> findAllDepartment() {
+        return departmentDao.findAllDepartment();
+    }
+
+    @Override
+    public void addDept(Department department) {
+        departmentDao.insertDept(department);
+    }
+
+    @Override
+    public List<Department> findDeptByName(String deptName, Page page) {
+        deptName = "%" + deptName + "%";
+        Map<String, Object> map = new HashMap<>();
+        map.put("deptName", deptName);
+        map.put("page", page);
+        return departmentDao.searchByName(map);
+    }
+
+    @Override
+    public int getDeptTotal() {
+        return departmentDao.getDeptTotal();
+    }
+
+    @Override
+    public List<Department> listDept(Page page) {
+        return departmentDao.listDept(page);
+    }
+
+    @Override
+    public Department findDeptById(int id) {
+        return departmentDao.findDeptById(id);
+    }
+
+    @Override
+    public void modifyDept(Department department) {
+        departmentDao.modifyDept(department);
+    }
+
+    @Override
+    public void deleteDept(int id) {
+        departmentDao.deleteDept(id);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/service/impl/UserServiceImpl.java b/src/main/java/com/service/impl/UserServiceImpl.java
new file mode 100644
index 0000000..853b16a
--- /dev/null
+++ b/src/main/java/com/service/impl/UserServiceImpl.java
@@ -0,0 +1,53 @@
+package com.service.impl;
+
+import com.dao.IUserDao;
+import com.entity.User;
+import com.service.IUserService;
+import com.utils.MD5Utils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @ClassName UserServiceImpl
+ * @Description TODO
+ * @Author YHT
+ * @Date 2021/5/28 17:41
+ */
+@Service
+public class UserServiceImpl implements IUserService {
+    @Autowired
+    private IUserDao userDao;
+
+    public User findById(Integer id) {
+        return userDao.findById(id);
+    }
+
+    public User findByNameAndPwd(String name, String password) {
+        Map<String, String> map = new HashMap<>();
+        map.put("name", name);
+        map.put("password", password);
+        return userDao.findByNameAndPwd(map);
+    }
+
+    @Override
+    public int insertUser(User user) {
+        return userDao.insertUser(user);
+    }
+
+    @Override
+    public void modifyUser(User user) {
+        userDao.modifyUser(user);
+    }
+
+    @Override
+    public void modifyPwd(String password, Integer id) {
+        Map<String, Object> map = new HashMap<>();
+        password = MD5Utils.stringToMD5(password);
+        map.put("id", id);
+        map.put("password", password);
+        userDao.modifyPwd(map);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/service/impl/VisitorServiceImpl.java b/src/main/java/com/service/impl/VisitorServiceImpl.java
new file mode 100644
index 0000000..67ce748
--- /dev/null
+++ b/src/main/java/com/service/impl/VisitorServiceImpl.java
@@ -0,0 +1,46 @@
+package com.service.impl;
+
+import com.dao.IVisitorDao;
+import com.entity.Visitor;
+import com.service.IVisitorService;
+import com.utils.Page;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @ClassName VisitorServiceImpl
+ * @Description TODO
+ * @Author YHT
+ * @Date 2021/7/9 21:47
+ */
+@Service
+public class VisitorServiceImpl implements IVisitorService {
+    @Autowired
+    private IVisitorDao visitorDao;
+    @Override
+    public List<Visitor> listVisitor(Page page) {
+        return visitorDao.listVisitor(page);
+    }
+
+    @Override
+    public int getVisitorTotal() {
+        return visitorDao.getVisitorTotal();
+    }
+
+    @Override
+    public void addVisitor(Visitor visitor) {
+        visitorDao.addVisitor(visitor);
+    }
+
+    @Override
+    public List<Visitor> searchByName(String name, Page page) {
+        Map<String, Object> map = new HashMap<>();
+        map.put("name", name);
+        map.put("page", page);
+        return visitorDao.searchByName(map);
+    }
+}
\ No newline at end of file