diff --git a/src/main/java/com/codesdream/ase/controller/LeavesController.java b/src/main/java/com/codesdream/ase/controller/LeavesController.java
new file mode 100644
index 0000000..8694283
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/controller/LeavesController.java
@@ -0,0 +1,71 @@
+package com.codesdream.ase.controller;
+
+import com.alibaba.fastjson.JSONObject;
+import com.codesdream.ase.component.datamanager.JSONParameter;
+import com.codesdream.ase.component.json.respond.FailedSONRespond;
+import com.codesdream.ase.component.json.respond.JSONBaseRespondObject;
+import com.codesdream.ase.component.permission.ASEUsernameEncoder;
+import com.codesdream.ase.component.json.request.UserLeaveChecker;
+import com.codesdream.ase.component.json.respond.UserLeaveCheckerJSONRespond;
+import com.codesdream.ase.service.LeavesService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import java.util.Optional;
+
+
+/**
+ * 登录界面控制器类
+ */
+@Slf4j
+@Controller
+public class LeavesController {
+
+    @Resource
+    private JSONParameter jsonParameter;
+
+    @Resource
+    private LeavesService leavesService;
+
+    @Resource
+    private ASEUsernameEncoder usernameEncoder;
+
+    @RequestMapping(value = "/")
+    String printLeave(Model model) {
+        return "Leave";
+    }
+
+    @RequestMapping(value = "/Leave/check", method = RequestMethod.POST)
+    @ResponseBody
+    String checkLeave(HttpServletRequest request){
+
+        // 检查是否为JSON
+        Optional<JSONObject> json = jsonParameter.getJSONByRequest(request);
+        if(!json.isPresent()) return jsonParameter.getJSONString(new FailedSONRespond());
+
+
+        UserLeaveChecker LeaveChecker = json.get().toJavaObject(UserLeaveChecker.class);
+        // 检查类型
+        if(LeaveChecker.getCheckType().equals("UsernameExistChecker")){
+            // 根据学号计算用户名
+            String user = usernameEncoder.encode(LeaveChecker.getUsername()) ;
+            // 查询用户名存在状态
+            boolean existStatus = userService.checkIfUserExists(user).getKey();
+            // 构造返回对象
+            UserLeaveCheckerJSONRespond respond = new UserLeaveCheckerJSONRespond();
+            respond.setUserExist(existStatus);
+            return jsonParameter.getJSONString(respond);
+        }
+        else {
+            // 返回失败对象
+            return jsonParameter.getJSONString(new JSONBaseRespondObject());
+        }
+    }
+
+}
diff --git a/src/main/java/com/codesdream/ase/model/leaves/Leave.java b/src/main/java/com/codesdream/ase/model/leaves/Leave.java
index bc4f361..80a00ae 100644
--- a/src/main/java/com/codesdream/ase/model/leaves/Leave.java
+++ b/src/main/java/com/codesdream/ase/model/leaves/Leave.java
@@ -6,7 +6,7 @@ import java.util.*;
 import javax.persistence.*;
 @Data
 @Entity
-@Table(name = "leaves_archive")
+@Table(name = "leave")
 public class Leave {
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
diff --git a/src/main/java/com/codesdream/ase/model/leaves/LeavesSystem.java b/src/main/java/com/codesdream/ase/model/leaves/LeavesSystem.java
deleted file mode 100644
index d21d7ad..0000000
--- a/src/main/java/com/codesdream/ase/model/leaves/LeavesSystem.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package com.codesdream.ase.model.leaves;
-/**
-    请假信息的管理系统
- */
-public class LeavesSystem {
-
-}
diff --git a/src/main/java/com/codesdream/ase/repository/leaves/LeaveRepository.java b/src/main/java/com/codesdream/ase/repository/leaves/LeaveRepository.java
new file mode 100644
index 0000000..180baf2
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/repository/leaves/LeaveRepository.java
@@ -0,0 +1,6 @@
+package com.codesdream.ase.repository.leaves;
+import org.springframework.data.repository.CrudRepository;
+
+public interface LeaveRepository extends CrudRepository{
+
+}
diff --git a/src/main/java/com/codesdream/ase/service/ILeavesService.java b/src/main/java/com/codesdream/ase/service/ILeavesService.java
new file mode 100644
index 0000000..4f8b0af
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/service/ILeavesService.java
@@ -0,0 +1,4 @@
+package com.codesdream.ase.service;
+
+public interface ILeavesService {
+}
diff --git a/src/main/java/com/codesdream/ase/service/LeavesService.java b/src/main/java/com/codesdream/ase/service/LeavesService.java
new file mode 100644
index 0000000..7a36cce
--- /dev/null
+++ b/src/main/java/com/codesdream/ase/service/LeavesService.java
@@ -0,0 +1,57 @@
+package com.codesdream.ase.service;
+
+import com.codesdream.ase.model.leaves.Leave;
+import com.codesdream.ase.repository.leaves.LeaveRepository;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import java.util.Optional;
+
+@Service
+public class LeavesService implements ILeavesService {
+
+    @Resource
+    private LeaveRepository leaveRepository;
+
+    @Override
+    public Optional<Leave> findLeaveByTitle(String title) {
+        return LeaveRepository.findByTitle(title);
+    }
+
+    @Override
+    public Optional<leave> findLeaveByCreator(String creatorName) {
+        return LeaveRepository.findByCreator(creatorName);
+    }
+
+    @Override
+    public Leave save(Leave Leave) {
+        return LeaveRepository.save(Leave);
+    }
+
+    @Override
+    public Leave addReport(Leave Leave, Report report) {
+        Leave.setReport(report);
+        return update(Leave);
+    }
+
+    @Override
+    public void delete(Leave Leave) {
+        LeaveRepository.delete(Leave);
+    }
+
+    @Override
+    public Leave update(Leave Leave) {
+        return LeaveRepository.save(Leave);
+    }
+
+    @Override
+    public Leave createLeave(Leave Leave) {
+        return LeaveRepository.save(Leave);
+    }
+
+    /*@Override
+    public Leave findActivitiesInTheCharge(User user) {
+
+    }*/
+
+}