diff --git a/src/main/java/tech/crm/crmserver/CrmServerApplication.java b/src/main/java/tech/crm/crmserver/CrmServerApplication.java
index 93e7ebb..6c718b4 100644
--- a/src/main/java/tech/crm/crmserver/CrmServerApplication.java
+++ b/src/main/java/tech/crm/crmserver/CrmServerApplication.java
@@ -1,6 +1,5 @@
 package tech.crm.crmserver;
 
-import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.scheduling.annotation.EnableScheduling;
diff --git a/src/main/java/tech/crm/crmserver/common/enums/BelongToStatus.java b/src/main/java/tech/crm/crmserver/common/enums/BelongToStatus.java
index 0ef334e..548eefb 100644
--- a/src/main/java/tech/crm/crmserver/common/enums/BelongToStatus.java
+++ b/src/main/java/tech/crm/crmserver/common/enums/BelongToStatus.java
@@ -1,8 +1,7 @@
 package tech.crm.crmserver.common.enums;
+
 import lombok.AllArgsConstructor;
-import lombok.Data;
 import lombok.NoArgsConstructor;
-import lombok.NonNull;
 
 /**
  * Status Enum for Belong To
diff --git a/src/main/java/tech/crm/crmserver/common/response/Result.java b/src/main/java/tech/crm/crmserver/common/response/Result.java
index 746f344..c41116b 100644
--- a/src/main/java/tech/crm/crmserver/common/response/Result.java
+++ b/src/main/java/tech/crm/crmserver/common/response/Result.java
@@ -4,7 +4,6 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/config/WebMvcConfig.java b/src/main/java/tech/crm/crmserver/config/WebMvcConfig.java
index 1a8bfae..54904db 100644
--- a/src/main/java/tech/crm/crmserver/config/WebMvcConfig.java
+++ b/src/main/java/tech/crm/crmserver/config/WebMvcConfig.java
@@ -1,21 +1,11 @@
 package tech.crm.crmserver.config;
 
 
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.PropertyNamingStrategy;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.http.converter.HttpMessageConverter;
-import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
-import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 import org.springframework.web.servlet.config.annotation.CorsRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 import tech.crm.crmserver.common.constants.SecurityConstants;
 
-import java.util.List;
-import java.util.TimeZone;
-
 /**
  * WebMvc configuration
  * @author Lingxiao
diff --git a/src/main/java/tech/crm/crmserver/controller/BelongToController.java b/src/main/java/tech/crm/crmserver/controller/BelongToController.java
index 827ffd5..f238466 100644
--- a/src/main/java/tech/crm/crmserver/controller/BelongToController.java
+++ b/src/main/java/tech/crm/crmserver/controller/BelongToController.java
@@ -1,20 +1,8 @@
 package tech.crm.crmserver.controller;
 
 
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
-
-import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
-import tech.crm.crmserver.common.response.ResponseResult;
-import tech.crm.crmserver.dao.BelongTo;
-import tech.crm.crmserver.dao.Organization;
-import tech.crm.crmserver.service.BelongToService;
-import tech.crm.crmserver.service.OrganizationService;
-import tech.crm.crmserver.service.UserService;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/controller/ContactController.java b/src/main/java/tech/crm/crmserver/controller/ContactController.java
index 48705de..00a55f4 100644
--- a/src/main/java/tech/crm/crmserver/controller/ContactController.java
+++ b/src/main/java/tech/crm/crmserver/controller/ContactController.java
@@ -1,16 +1,11 @@
 package tech.crm.crmserver.controller;
 
 
-import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpStatus;
-import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
-
 import tech.crm.crmserver.common.enums.PermissionLevel;
 import tech.crm.crmserver.common.response.ResponseResult;
-import tech.crm.crmserver.common.utils.NullAwareBeanUtilsBean;
 import tech.crm.crmserver.dao.Contact;
 import tech.crm.crmserver.dao.Department;
 import tech.crm.crmserver.dao.Permission;
@@ -24,10 +19,7 @@
 import tech.crm.crmserver.service.UserService;
 
 import javax.validation.Valid;
-import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/controller/DepartmentController.java b/src/main/java/tech/crm/crmserver/controller/DepartmentController.java
index 9eb5af2..3e2c818 100644
--- a/src/main/java/tech/crm/crmserver/controller/DepartmentController.java
+++ b/src/main/java/tech/crm/crmserver/controller/DepartmentController.java
@@ -5,7 +5,6 @@
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.web.bind.annotation.*;
-
 import tech.crm.crmserver.common.enums.PermissionLevel;
 import tech.crm.crmserver.common.response.ResponseResult;
 import tech.crm.crmserver.dao.Permission;
diff --git a/src/main/java/tech/crm/crmserver/controller/EventController.java b/src/main/java/tech/crm/crmserver/controller/EventController.java
index 99a5c55..d8e213d 100644
--- a/src/main/java/tech/crm/crmserver/controller/EventController.java
+++ b/src/main/java/tech/crm/crmserver/controller/EventController.java
@@ -2,7 +2,6 @@
 
 
 import org.springframework.web.bind.annotation.RequestMapping;
-
 import org.springframework.web.bind.annotation.RestController;
 
 /**
diff --git a/src/main/java/tech/crm/crmserver/controller/OrganizationController.java b/src/main/java/tech/crm/crmserver/controller/OrganizationController.java
index 2b81b87..494d0d5 100644
--- a/src/main/java/tech/crm/crmserver/controller/OrganizationController.java
+++ b/src/main/java/tech/crm/crmserver/controller/OrganizationController.java
@@ -3,18 +3,14 @@
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
-
-import tech.crm.crmserver.common.enums.PermissionLevel;
 import tech.crm.crmserver.common.enums.Status;
 import tech.crm.crmserver.common.response.ResponseResult;
 import tech.crm.crmserver.common.utils.NullAwareBeanUtilsBean;
-import tech.crm.crmserver.dao.*;
+import tech.crm.crmserver.dao.BelongTo;
+import tech.crm.crmserver.dao.Department;
+import tech.crm.crmserver.dao.Organization;
+import tech.crm.crmserver.dao.Permission;
 import tech.crm.crmserver.dto.DepartmentDTO;
 import tech.crm.crmserver.dto.OrganizationDTO;
 import tech.crm.crmserver.exception.*;
@@ -23,11 +19,6 @@
 import java.util.ArrayList;
 import java.util.Comparator;
 import java.util.List;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-import tech.crm.crmserver.dao.Organization;
-import tech.crm.crmserver.service.OrganizationService;
-import tech.crm.crmserver.service.UserService;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/controller/PermissionController.java b/src/main/java/tech/crm/crmserver/controller/PermissionController.java
index de2c90f..064f246 100644
--- a/src/main/java/tech/crm/crmserver/controller/PermissionController.java
+++ b/src/main/java/tech/crm/crmserver/controller/PermissionController.java
@@ -1,16 +1,11 @@
 package tech.crm.crmserver.controller;
 
 
-import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
-import org.springframework.http.HttpStatus;
-
-import tech.crm.crmserver.common.enums.PermissionLevel;
 import tech.crm.crmserver.common.response.ResponseResult;
 import tech.crm.crmserver.dao.Organization;
 import tech.crm.crmserver.dao.Permission;
-import tech.crm.crmserver.exception.NotEnoughPermissionException;
 import tech.crm.crmserver.exception.UserNotInDepartmentException;
 import tech.crm.crmserver.service.OrganizationService;
 import tech.crm.crmserver.service.PermissionService;
diff --git a/src/main/java/tech/crm/crmserver/controller/ToDoListController.java b/src/main/java/tech/crm/crmserver/controller/ToDoListController.java
index 465194f..b7d4bc5 100644
--- a/src/main/java/tech/crm/crmserver/controller/ToDoListController.java
+++ b/src/main/java/tech/crm/crmserver/controller/ToDoListController.java
@@ -2,7 +2,6 @@
 
 
 import org.springframework.web.bind.annotation.RequestMapping;
-
 import org.springframework.web.bind.annotation.RestController;
 
 /**
diff --git a/src/main/java/tech/crm/crmserver/controller/TokenKeyController.java b/src/main/java/tech/crm/crmserver/controller/TokenKeyController.java
index 3861b05..4fb0009 100644
--- a/src/main/java/tech/crm/crmserver/controller/TokenKeyController.java
+++ b/src/main/java/tech/crm/crmserver/controller/TokenKeyController.java
@@ -2,7 +2,6 @@
 
 
 import org.springframework.web.bind.annotation.RequestMapping;
-
 import org.springframework.web.bind.annotation.RestController;
 
 /**
diff --git a/src/main/java/tech/crm/crmserver/controller/UserController.java b/src/main/java/tech/crm/crmserver/controller/UserController.java
index 64c5c03..459a652 100644
--- a/src/main/java/tech/crm/crmserver/controller/UserController.java
+++ b/src/main/java/tech/crm/crmserver/controller/UserController.java
@@ -11,14 +11,9 @@
 import tech.crm.crmserver.dto.LoginRequest;
 import tech.crm.crmserver.dto.ResetPasswordDTO;
 import tech.crm.crmserver.dto.UserDTO;
-import tech.crm.crmserver.exception.LoginBadCredentialsException;
-import tech.crm.crmserver.exception.UserAlreadyExistException;
-import tech.crm.crmserver.service.MailService;
 import tech.crm.crmserver.service.TokenKeyService;
 import tech.crm.crmserver.service.UserService;
 
-import javax.validation.constraints.Email;
-
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/dao/BelongTo.java b/src/main/java/tech/crm/crmserver/dao/BelongTo.java
index ab02078..660c2c8 100644
--- a/src/main/java/tech/crm/crmserver/dao/BelongTo.java
+++ b/src/main/java/tech/crm/crmserver/dao/BelongTo.java
@@ -1,15 +1,16 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.io.Serializable;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import tech.crm.crmserver.common.enums.Status;
 
+import java.io.Serializable;
+
 /**
  * <p>
  *  entity
diff --git a/src/main/java/tech/crm/crmserver/dao/Contact.java b/src/main/java/tech/crm/crmserver/dao/Contact.java
index d2c07a2..6d6ed9f 100644
--- a/src/main/java/tech/crm/crmserver/dao/Contact.java
+++ b/src/main/java/tech/crm/crmserver/dao/Contact.java
@@ -1,18 +1,18 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
-import java.time.LocalDate;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.io.Serializable;
-import java.util.Objects;
-
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import tech.crm.crmserver.common.enums.Status;
 
+import java.io.Serializable;
+import java.time.LocalDate;
+import java.util.Objects;
+
 /**
  * <p>
  *  entity
diff --git a/src/main/java/tech/crm/crmserver/dao/Department.java b/src/main/java/tech/crm/crmserver/dao/Department.java
index e455c42..1183663 100644
--- a/src/main/java/tech/crm/crmserver/dao/Department.java
+++ b/src/main/java/tech/crm/crmserver/dao/Department.java
@@ -1,15 +1,16 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.io.Serializable;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import tech.crm.crmserver.common.enums.Status;
 
+import java.io.Serializable;
+
 /**
  * <p>
  *  entity
diff --git a/src/main/java/tech/crm/crmserver/dao/Event.java b/src/main/java/tech/crm/crmserver/dao/Event.java
index 478bc63..e859b9d 100644
--- a/src/main/java/tech/crm/crmserver/dao/Event.java
+++ b/src/main/java/tech/crm/crmserver/dao/Event.java
@@ -1,16 +1,17 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.time.LocalDateTime;
-import java.io.Serializable;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import tech.crm.crmserver.common.enums.Status;
 
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
 /**
  * <p>
  *  entity
diff --git a/src/main/java/tech/crm/crmserver/dao/Organization.java b/src/main/java/tech/crm/crmserver/dao/Organization.java
index 4f1e227..99f3950 100644
--- a/src/main/java/tech/crm/crmserver/dao/Organization.java
+++ b/src/main/java/tech/crm/crmserver/dao/Organization.java
@@ -1,15 +1,16 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.io.Serializable;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import tech.crm.crmserver.common.enums.Status;
 
+import java.io.Serializable;
+
 /**
  * <p>
  *  entity
diff --git a/src/main/java/tech/crm/crmserver/dao/Permission.java b/src/main/java/tech/crm/crmserver/dao/Permission.java
index 969aaf7..d0dc843 100644
--- a/src/main/java/tech/crm/crmserver/dao/Permission.java
+++ b/src/main/java/tech/crm/crmserver/dao/Permission.java
@@ -1,9 +1,8 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.io.Serializable;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
@@ -11,6 +10,8 @@
 import tech.crm.crmserver.common.enums.PermissionLevel;
 import tech.crm.crmserver.common.enums.Status;
 
+import java.io.Serializable;
+
 /**
  * <p>
  *  entity
diff --git a/src/main/java/tech/crm/crmserver/dao/ToDoList.java b/src/main/java/tech/crm/crmserver/dao/ToDoList.java
index 5210099..d989e77 100644
--- a/src/main/java/tech/crm/crmserver/dao/ToDoList.java
+++ b/src/main/java/tech/crm/crmserver/dao/ToDoList.java
@@ -1,16 +1,17 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.time.LocalDateTime;
-import java.io.Serializable;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import tech.crm.crmserver.common.enums.Status;
 
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
 /**
  * <p>
  *  entity
diff --git a/src/main/java/tech/crm/crmserver/dao/TokenKey.java b/src/main/java/tech/crm/crmserver/dao/TokenKey.java
index 7805be1..32a5f60 100644
--- a/src/main/java/tech/crm/crmserver/dao/TokenKey.java
+++ b/src/main/java/tech/crm/crmserver/dao/TokenKey.java
@@ -1,16 +1,16 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.io.Serializable;
-import java.time.LocalDateTime;
-
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 
+import java.io.Serializable;
+import java.time.LocalDateTime;
+
 /**
  * <p>
  *  entity
diff --git a/src/main/java/tech/crm/crmserver/dao/User.java b/src/main/java/tech/crm/crmserver/dao/User.java
index 6aa08c9..9caa702 100644
--- a/src/main/java/tech/crm/crmserver/dao/User.java
+++ b/src/main/java/tech/crm/crmserver/dao/User.java
@@ -1,15 +1,16 @@
 package tech.crm.crmserver.dao;
 
-import com.baomidou.mybatisplus.annotation.TableName;
 import com.baomidou.mybatisplus.annotation.IdType;
 import com.baomidou.mybatisplus.annotation.TableId;
-import java.io.Serializable;
+import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import tech.crm.crmserver.common.enums.Status;
 
+import java.io.Serializable;
+
 /**
  * <p>
  *  entity for data transfer with database
diff --git a/src/main/java/tech/crm/crmserver/dto/ContactCreateDTO.java b/src/main/java/tech/crm/crmserver/dto/ContactCreateDTO.java
index 265e2db..e7b7ed9 100644
--- a/src/main/java/tech/crm/crmserver/dto/ContactCreateDTO.java
+++ b/src/main/java/tech/crm/crmserver/dto/ContactCreateDTO.java
@@ -5,7 +5,6 @@
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
-import tech.crm.crmserver.common.enums.Status;
 
 import javax.validation.constraints.Email;
 import javax.validation.constraints.NotNull;
diff --git a/src/main/java/tech/crm/crmserver/dto/ContactUpdateDTO.java b/src/main/java/tech/crm/crmserver/dto/ContactUpdateDTO.java
index ec4e6a0..346c597 100644
--- a/src/main/java/tech/crm/crmserver/dto/ContactUpdateDTO.java
+++ b/src/main/java/tech/crm/crmserver/dto/ContactUpdateDTO.java
@@ -1,11 +1,9 @@
 package tech.crm.crmserver.dto;
 
 
-import com.fasterxml.jackson.annotation.JsonProperty;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
-import tech.crm.crmserver.common.enums.Status;
 
 import javax.validation.constraints.Email;
 import javax.validation.constraints.NotNull;
diff --git a/src/main/java/tech/crm/crmserver/mapper/BelongToMapper.java b/src/main/java/tech/crm/crmserver/mapper/BelongToMapper.java
index 7702380..9e8bfc1 100644
--- a/src/main/java/tech/crm/crmserver/mapper/BelongToMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/BelongToMapper.java
@@ -1,8 +1,8 @@
 package tech.crm.crmserver.mapper;
 
-import tech.crm.crmserver.dao.BelongTo;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.BelongTo;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/mapper/ContactMapper.java b/src/main/java/tech/crm/crmserver/mapper/ContactMapper.java
index 48feab8..46eb06a 100644
--- a/src/main/java/tech/crm/crmserver/mapper/ContactMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/ContactMapper.java
@@ -1,15 +1,14 @@
 package tech.crm.crmserver.mapper;
 
 import com.baomidou.mybatisplus.core.conditions.Wrapper;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.baomidou.mybatisplus.core.toolkit.Constants;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
-import tech.crm.crmserver.dao.Contact;
-import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.Contact;
 import tech.crm.crmserver.dto.ContactDTO;
-import tech.crm.crmserver.dto.UserPermissionDTO;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/mapper/DepartmentMapper.java b/src/main/java/tech/crm/crmserver/mapper/DepartmentMapper.java
index 75f8dc0..bf89add 100644
--- a/src/main/java/tech/crm/crmserver/mapper/DepartmentMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/DepartmentMapper.java
@@ -1,8 +1,8 @@
 package tech.crm.crmserver.mapper;
 
-import tech.crm.crmserver.dao.Department;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.Department;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/mapper/EventMapper.java b/src/main/java/tech/crm/crmserver/mapper/EventMapper.java
index 5d08f97..6566b0a 100644
--- a/src/main/java/tech/crm/crmserver/mapper/EventMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/EventMapper.java
@@ -1,8 +1,8 @@
 package tech.crm.crmserver.mapper;
 
-import tech.crm.crmserver.dao.Event;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.Event;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/mapper/OrganizationMapper.java b/src/main/java/tech/crm/crmserver/mapper/OrganizationMapper.java
index d870a64..b97dc40 100644
--- a/src/main/java/tech/crm/crmserver/mapper/OrganizationMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/OrganizationMapper.java
@@ -1,10 +1,10 @@
 package tech.crm.crmserver.mapper;
 
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
-import tech.crm.crmserver.dao.Organization;
-import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.Organization;
 
 import java.util.List;
 
diff --git a/src/main/java/tech/crm/crmserver/mapper/PermissionMapper.java b/src/main/java/tech/crm/crmserver/mapper/PermissionMapper.java
index b80c03f..8550afd 100644
--- a/src/main/java/tech/crm/crmserver/mapper/PermissionMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/PermissionMapper.java
@@ -1,11 +1,11 @@
 package tech.crm.crmserver.mapper;
 
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import org.apache.ibatis.annotations.Param;
 import org.apache.ibatis.annotations.Select;
-import tech.crm.crmserver.dao.Permission;
-import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.Permission;
 import tech.crm.crmserver.dto.UserPermissionDTO;
 
 /**
diff --git a/src/main/java/tech/crm/crmserver/mapper/ToDoListMapper.java b/src/main/java/tech/crm/crmserver/mapper/ToDoListMapper.java
index 46e99c8..4f0a3f7 100644
--- a/src/main/java/tech/crm/crmserver/mapper/ToDoListMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/ToDoListMapper.java
@@ -1,8 +1,8 @@
 package tech.crm.crmserver.mapper;
 
-import tech.crm.crmserver.dao.ToDoList;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.ToDoList;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/mapper/TokenKeyMapper.java b/src/main/java/tech/crm/crmserver/mapper/TokenKeyMapper.java
index e50b440..0358e4b 100644
--- a/src/main/java/tech/crm/crmserver/mapper/TokenKeyMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/TokenKeyMapper.java
@@ -1,8 +1,8 @@
 package tech.crm.crmserver.mapper;
 
-import tech.crm.crmserver.dao.TokenKey;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.TokenKey;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/mapper/UserMapper.java b/src/main/java/tech/crm/crmserver/mapper/UserMapper.java
index df323a2..13f3705 100644
--- a/src/main/java/tech/crm/crmserver/mapper/UserMapper.java
+++ b/src/main/java/tech/crm/crmserver/mapper/UserMapper.java
@@ -1,8 +1,8 @@
 package tech.crm.crmserver.mapper;
 
-import tech.crm.crmserver.dao.User;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.springframework.stereotype.Repository;
+import tech.crm.crmserver.dao.User;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/security/JwtAuthenticationEntryPoint.java b/src/main/java/tech/crm/crmserver/security/JwtAuthenticationEntryPoint.java
index 11afbb1..e07461b 100644
--- a/src/main/java/tech/crm/crmserver/security/JwtAuthenticationEntryPoint.java
+++ b/src/main/java/tech/crm/crmserver/security/JwtAuthenticationEntryPoint.java
@@ -4,7 +4,6 @@
 import org.springframework.http.HttpStatus;
 import org.springframework.security.core.AuthenticationException;
 import org.springframework.security.web.AuthenticationEntryPoint;
-import tech.crm.crmserver.common.response.ResponseResult;
 import tech.crm.crmserver.common.response.Result;
 
 import javax.servlet.http.HttpServletRequest;
diff --git a/src/main/java/tech/crm/crmserver/service/BelongToService.java b/src/main/java/tech/crm/crmserver/service/BelongToService.java
index 37724b4..9fd1b63 100644
--- a/src/main/java/tech/crm/crmserver/service/BelongToService.java
+++ b/src/main/java/tech/crm/crmserver/service/BelongToService.java
@@ -1,8 +1,8 @@
 package tech.crm.crmserver.service;
 
+import com.baomidou.mybatisplus.extension.service.IService;
 import tech.crm.crmserver.common.enums.BelongToStatus;
 import tech.crm.crmserver.dao.BelongTo;
-import com.baomidou.mybatisplus.extension.service.IService;
 
 import java.util.List;
 
diff --git a/src/main/java/tech/crm/crmserver/service/ContactService.java b/src/main/java/tech/crm/crmserver/service/ContactService.java
index b0b0991..51090d9 100644
--- a/src/main/java/tech/crm/crmserver/service/ContactService.java
+++ b/src/main/java/tech/crm/crmserver/service/ContactService.java
@@ -1,8 +1,8 @@
 package tech.crm.crmserver.service;
 
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
-import tech.crm.crmserver.dao.Contact;
 import com.baomidou.mybatisplus.extension.service.IService;
+import tech.crm.crmserver.dao.Contact;
 import tech.crm.crmserver.dto.ContactCreateDTO;
 import tech.crm.crmserver.dto.ContactDTO;
 import tech.crm.crmserver.dto.ContactUpdateDTO;
diff --git a/src/main/java/tech/crm/crmserver/service/DepartmentService.java b/src/main/java/tech/crm/crmserver/service/DepartmentService.java
index 53467c7..abc82f3 100644
--- a/src/main/java/tech/crm/crmserver/service/DepartmentService.java
+++ b/src/main/java/tech/crm/crmserver/service/DepartmentService.java
@@ -1,8 +1,7 @@
 package tech.crm.crmserver.service;
 
-import org.springframework.web.bind.annotation.RequestParam;
-import tech.crm.crmserver.dao.Department;
 import com.baomidou.mybatisplus.extension.service.IService;
+import tech.crm.crmserver.dao.Department;
 
 import java.util.List;
 
diff --git a/src/main/java/tech/crm/crmserver/service/EventService.java b/src/main/java/tech/crm/crmserver/service/EventService.java
index 30111e2..6254c63 100644
--- a/src/main/java/tech/crm/crmserver/service/EventService.java
+++ b/src/main/java/tech/crm/crmserver/service/EventService.java
@@ -1,7 +1,7 @@
 package tech.crm.crmserver.service;
 
-import tech.crm.crmserver.dao.Event;
 import com.baomidou.mybatisplus.extension.service.IService;
+import tech.crm.crmserver.dao.Event;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/service/OrganizationService.java b/src/main/java/tech/crm/crmserver/service/OrganizationService.java
index 08a1848..1029ea7 100644
--- a/src/main/java/tech/crm/crmserver/service/OrganizationService.java
+++ b/src/main/java/tech/crm/crmserver/service/OrganizationService.java
@@ -1,7 +1,7 @@
 package tech.crm.crmserver.service;
 
-import tech.crm.crmserver.dao.Organization;
 import com.baomidou.mybatisplus.extension.service.IService;
+import tech.crm.crmserver.dao.Organization;
 
 import java.util.List;
 
diff --git a/src/main/java/tech/crm/crmserver/service/PermissionService.java b/src/main/java/tech/crm/crmserver/service/PermissionService.java
index 6488b9f..cfd0c3d 100644
--- a/src/main/java/tech/crm/crmserver/service/PermissionService.java
+++ b/src/main/java/tech/crm/crmserver/service/PermissionService.java
@@ -1,10 +1,9 @@
 package tech.crm.crmserver.service;
 
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
-import org.springframework.web.bind.annotation.RequestParam;
+import com.baomidou.mybatisplus.extension.service.IService;
 import tech.crm.crmserver.common.enums.PermissionLevel;
 import tech.crm.crmserver.dao.Permission;
-import com.baomidou.mybatisplus.extension.service.IService;
 import tech.crm.crmserver.dto.DepartmentDTO;
 import tech.crm.crmserver.dto.UserPermissionDTO;
 
diff --git a/src/main/java/tech/crm/crmserver/service/ToDoListService.java b/src/main/java/tech/crm/crmserver/service/ToDoListService.java
index 0768efb..acce4c2 100644
--- a/src/main/java/tech/crm/crmserver/service/ToDoListService.java
+++ b/src/main/java/tech/crm/crmserver/service/ToDoListService.java
@@ -1,7 +1,7 @@
 package tech.crm.crmserver.service;
 
-import tech.crm.crmserver.dao.ToDoList;
 import com.baomidou.mybatisplus.extension.service.IService;
+import tech.crm.crmserver.dao.ToDoList;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/service/TokenKeyService.java b/src/main/java/tech/crm/crmserver/service/TokenKeyService.java
index 3ef334c..e9e4905 100644
--- a/src/main/java/tech/crm/crmserver/service/TokenKeyService.java
+++ b/src/main/java/tech/crm/crmserver/service/TokenKeyService.java
@@ -1,10 +1,9 @@
 package tech.crm.crmserver.service;
 
+import com.baomidou.mybatisplus.extension.service.IService;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
 import tech.crm.crmserver.dao.TokenKey;
-import com.baomidou.mybatisplus.extension.service.IService;
 import tech.crm.crmserver.dao.User;
-import tech.crm.crmserver.dto.LoginRequest;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/service/UserService.java b/src/main/java/tech/crm/crmserver/service/UserService.java
index 497c31a..c41780b 100644
--- a/src/main/java/tech/crm/crmserver/service/UserService.java
+++ b/src/main/java/tech/crm/crmserver/service/UserService.java
@@ -1,7 +1,7 @@
 package tech.crm.crmserver.service;
 
-import tech.crm.crmserver.dao.User;
 import com.baomidou.mybatisplus.extension.service.IService;
+import tech.crm.crmserver.dao.User;
 import tech.crm.crmserver.dto.LoginRequest;
 import tech.crm.crmserver.dto.UserDTO;
 
diff --git a/src/main/java/tech/crm/crmserver/service/impl/BelongToServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/BelongToServiceImpl.java
index 54714e2..915e841 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/BelongToServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/BelongToServiceImpl.java
@@ -1,13 +1,13 @@
 package tech.crm.crmserver.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.common.enums.BelongToStatus;
 import tech.crm.crmserver.dao.BelongTo;
 import tech.crm.crmserver.mapper.BelongToMapper;
 import tech.crm.crmserver.service.BelongToService;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
 
 import java.util.List;
 
diff --git a/src/main/java/tech/crm/crmserver/service/impl/ContactServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/ContactServiceImpl.java
index 15789cc..08a5706 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/ContactServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/ContactServiceImpl.java
@@ -2,7 +2,9 @@
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.common.enums.PermissionLevel;
 import tech.crm.crmserver.common.utils.NullAwareBeanUtilsBean;
 import tech.crm.crmserver.dao.Contact;
@@ -12,8 +14,6 @@
 import tech.crm.crmserver.dto.ContactUpdateDTO;
 import tech.crm.crmserver.mapper.ContactMapper;
 import tech.crm.crmserver.service.*;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
 
 import java.time.LocalDate;
 import java.util.ArrayList;
diff --git a/src/main/java/tech/crm/crmserver/service/impl/DepartmentServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/DepartmentServiceImpl.java
index e4fb9ed..6428c70 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/DepartmentServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/DepartmentServiceImpl.java
@@ -1,9 +1,10 @@
 package tech.crm.crmserver.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.common.enums.PermissionLevel;
-import tech.crm.crmserver.dao.Contact;
 import tech.crm.crmserver.dao.Department;
 import tech.crm.crmserver.dao.Organization;
 import tech.crm.crmserver.dao.Permission;
@@ -12,8 +13,6 @@
 import tech.crm.crmserver.exception.OrganizationNotExistException;
 import tech.crm.crmserver.mapper.DepartmentMapper;
 import tech.crm.crmserver.service.*;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
 
 import java.util.ArrayList;
 import java.util.List;
diff --git a/src/main/java/tech/crm/crmserver/service/impl/EventServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/EventServiceImpl.java
index 3b5b037..19ca1cd 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/EventServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/EventServiceImpl.java
@@ -1,10 +1,10 @@
 package tech.crm.crmserver.service.impl;
 
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.dao.Event;
 import tech.crm.crmserver.mapper.EventMapper;
 import tech.crm.crmserver.service.EventService;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/service/impl/OrganizationServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/OrganizationServiceImpl.java
index e2aa0d3..2d595c9 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/OrganizationServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/OrganizationServiceImpl.java
@@ -1,7 +1,9 @@
 package tech.crm.crmserver.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.dao.Organization;
 import tech.crm.crmserver.exception.NotEnoughPermissionException;
 import tech.crm.crmserver.exception.OrganizationNotExistException;
@@ -9,8 +11,6 @@
 import tech.crm.crmserver.service.BelongToService;
 import tech.crm.crmserver.service.DepartmentService;
 import tech.crm.crmserver.service.OrganizationService;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
 import tech.crm.crmserver.service.UserService;
 
 import java.util.HashMap;
diff --git a/src/main/java/tech/crm/crmserver/service/impl/PermissionServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/PermissionServiceImpl.java
index 3d01a86..28e77ae 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/PermissionServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/PermissionServiceImpl.java
@@ -2,10 +2,11 @@
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.common.enums.PermissionLevel;
-import tech.crm.crmserver.common.response.ResponseResult;
 import tech.crm.crmserver.dao.Organization;
 import tech.crm.crmserver.dao.Permission;
 import tech.crm.crmserver.dto.DepartmentDTO;
@@ -17,8 +18,6 @@
 import tech.crm.crmserver.service.DepartmentService;
 import tech.crm.crmserver.service.OrganizationService;
 import tech.crm.crmserver.service.PermissionService;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
 import tech.crm.crmserver.service.UserService;
 
 import java.util.ArrayList;
diff --git a/src/main/java/tech/crm/crmserver/service/impl/ToDoListServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/ToDoListServiceImpl.java
index 2297b9a..bba6363 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/ToDoListServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/ToDoListServiceImpl.java
@@ -1,10 +1,10 @@
 package tech.crm.crmserver.service.impl;
 
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.dao.ToDoList;
 import tech.crm.crmserver.mapper.ToDoListMapper;
 import tech.crm.crmserver.service.ToDoListService;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
 
 /**
  * <p>
diff --git a/src/main/java/tech/crm/crmserver/service/impl/TokenKeyServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/TokenKeyServiceImpl.java
index 7826c6b..63addde 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/TokenKeyServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/TokenKeyServiceImpl.java
@@ -1,27 +1,22 @@
 package tech.crm.crmserver.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import io.jsonwebtoken.Claims;
 import io.jsonwebtoken.Jwts;
 import io.jsonwebtoken.SignatureAlgorithm;
 import io.jsonwebtoken.security.Keys;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.security.authentication.BadCredentialsException;
 import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
-import org.springframework.security.core.Authentication;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.authority.AuthorityUtils;
-import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.common.constants.SecurityConstants;
 import tech.crm.crmserver.dao.TokenKey;
 import tech.crm.crmserver.dao.User;
-import tech.crm.crmserver.dto.LoginRequest;
 import tech.crm.crmserver.mapper.TokenKeyMapper;
 import tech.crm.crmserver.security.JwtSigningKeyResolver;
 import tech.crm.crmserver.service.TokenKeyService;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
-import tech.crm.crmserver.service.UserService;
 
 import javax.crypto.SecretKey;
 import javax.xml.bind.DatatypeConverter;
diff --git a/src/main/java/tech/crm/crmserver/service/impl/UserServiceImpl.java b/src/main/java/tech/crm/crmserver/service/impl/UserServiceImpl.java
index f456145..26820a7 100644
--- a/src/main/java/tech/crm/crmserver/service/impl/UserServiceImpl.java
+++ b/src/main/java/tech/crm/crmserver/service/impl/UserServiceImpl.java
@@ -2,8 +2,8 @@
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.security.authentication.BadCredentialsException;
 import org.springframework.security.core.Authentication;
 import org.springframework.security.core.GrantedAuthority;
 import org.springframework.security.core.authority.AuthorityUtils;
@@ -12,6 +12,7 @@
 import org.springframework.security.core.userdetails.UserDetailsService;
 import org.springframework.security.core.userdetails.UsernameNotFoundException;
 import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
 import tech.crm.crmserver.common.utils.NullAwareBeanUtilsBean;
 import tech.crm.crmserver.dao.User;
 import tech.crm.crmserver.dto.LoginRequest;
@@ -23,8 +24,6 @@
 import tech.crm.crmserver.service.MailService;
 import tech.crm.crmserver.service.TokenKeyService;
 import tech.crm.crmserver.service.UserService;
-import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
-import org.springframework.stereotype.Service;
 
 import java.util.List;
 import java.util.UUID;