增加了几个Repository, StaticsService构建完成

src/main/java/com/codesdream/ase/component/student/SubjectScore.java

@@ -0,0 +1,20 @@
+package com.codesdream.ase.component.student;
+
+import lombok.Data;
+
+import java.util.Date;
+
+@Data
+public class SubjectScore {
+
+    private int studentId;
+
+    private String subject;
+
+    private float credit;
+
+    private float score;
+
+    private Date finishedDate;
+
+}

src/main/java/com/codesdream/ase/model/message/Notification.java

@@ -7,6 +7,7 @@ import javax.persistence.Entity;
 import javax.persistence.Id;
 import javax.persistence.ManyToMany;
 import javax.persistence.Table;
+import java.util.Date;
 import java.util.List;
 
 @Entity
@@ -20,6 +21,10 @@ public class Notification {
 
     String title;
 
+    Date creationDate = new Date();
+
+    Date announcementDate;
+
     @ManyToMany
     List<File> files;
 

src/main/java/com/codesdream/ase/model/parent/Exercise.java

@@ -1,22 +1,22 @@
 package com.codesdream.ase.model.parent;
 
-import com.codesdream.ase.model.file.Image;
 import lombok.Data;
 
 import javax.persistence.*;
 import java.sql.Time;
 import java.util.Date;
-import java.util.List;
 
 @Entity
 @Table
 @Data
-public class Excercise {
+public class Exercise {
 
     @Id
     @GeneratedValue(strategy = GenerationType.AUTO)
     int id;
 
+    int studentId;
+
     // 开始时间
     Date start;
 

src/main/java/com/codesdream/ase/model/student/StudentCourse.java

@@ -12,9 +12,9 @@ public class StudentCourse {
     @Id
     int id;
 
-    String studentId;
+    int studentId;
 
-    String courseId;
+    int courseId;
 
     @Column(nullable = false)
     float score;

src/main/java/com/codesdream/ase/repository/parent/ExerciseRepository.java

@@ -0,0 +1,12 @@
+package com.codesdream.ase.repository.parent;
+
+import com.codesdream.ase.model.parent.Exercise;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface ExerciseRepository extends JpaRepository<Exercise, Integer> {
+    List<Exercise> findByStudentId(int studentId);
+}

src/main/java/com/codesdream/ase/repository/student/HonorRepository.java

@@ -9,5 +9,7 @@ import java.util.List;
 
 @Repository
 public interface HonorRepository extends JpaRepository<Honor, Integer> {
-    List<Honor> findByStudentId(String studentId, Sort sort);
+
+    List<Honor> findByStudentId(int studentId);
+    List<Honor> findByStudentId(int studentId, Sort sort);
 }

src/main/java/com/codesdream/ase/repository/student/NotificationRepository.java

@@ -4,9 +4,14 @@ import com.codesdream.ase.model.message.Notification;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
 import java.util.Optional;
 
 @Repository
 public interface NotificationRepository extends JpaRepository<Notification, Integer> {
     Optional<Notification> findByTitle(String title);
+
+    List<Notification> findAllByOrOrderByAnnouncementDateDesc();
+
+    List<Notification> findAllByOrOrderByCreationDateDesc();
 }

src/main/java/com/codesdream/ase/repository/student/StudentCourseRepository.java

@@ -0,0 +1,14 @@
+package com.codesdream.ase.repository.student;
+
+import com.codesdream.ase.model.student.StudentCourse;
+import org.springframework.data.domain.Sort;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface StudentCourseRepository extends JpaRepository<StudentCourse, Integer> {
+    List<StudentCourse> findByStudentId(int studentId);
+    List<StudentCourse> findByStudentId(int studentId, Sort sort);
+}

src/main/java/com/codesdream/ase/service/StaticsService.java

@@ -0,0 +1,161 @@
+package com.codesdream.ase.service;
+
+import com.codesdream.ase.component.student.SubjectScore;
+import com.codesdream.ase.exception.notfound.NotFoundException;
+import com.codesdream.ase.model.message.Notification;
+import com.codesdream.ase.model.parent.Exercise;
+import com.codesdream.ase.model.permission.User;
+import com.codesdream.ase.model.permission.UserDetail;
+import com.codesdream.ase.model.student.Course;
+import com.codesdream.ase.model.student.Honor;
+import com.codesdream.ase.model.student.Student;
+import com.codesdream.ase.model.student.StudentCourse;
+import com.codesdream.ase.repository.parent.ExerciseRepository;
+import com.codesdream.ase.repository.permission.UserRepository;
+import com.codesdream.ase.repository.student.*;
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+
+@Service
+public class StaticsService {
+
+    @Resource
+    StudentCourseRepository scRepo;
+
+    @Resource
+    UserRepository userRepository;
+
+    @Resource
+    CourseRepository courseRepository;
+
+    @Resource
+    StudentRepository studentRepository;
+
+    @Resource
+    HonorRepository honorRepository;
+
+    @Resource
+    NotificationRepository notificationRepository;
+
+    @Resource
+    ExerciseRepository exerciseRepository;
+
+
+    /**
+     * 根据给定排序方式查询某学生的成绩情况
+     * @see SubjectScore
+     * @see StudentCourse
+     * @param studentId 学生id
+     * @param flag 指定排序方式，0表示按学期排序，1表示按分数排序，2表示按照学分排序，否则表示不排序
+     * @return
+     */
+    public List<SubjectScore> displayScore (int studentId, int flag){
+
+        Sort sort;
+        switch (flag){
+            case 0:{
+                sort = Sort.by(Sort.Direction.ASC, "term");
+                break;
+            }
+            case 1:{
+                sort = Sort.by(Sort.Direction.ASC, "score");
+                break;
+            }
+            case 2:{
+                sort = Sort.by(Sort.Direction.ASC, "credit");
+                break;
+            }
+            default:
+                sort = null;
+        }
+        List<StudentCourse> studentCourseList = new ArrayList<>();
+        if(sort == null){
+            studentCourseList = scRepo.findByStudentId(studentId);
+        }else{
+            studentCourseList = scRepo.findByStudentId(studentId, sort);
+        }
+        if(studentCourseList.isEmpty()){
+            return null;
+        }
+        List<SubjectScore> subjectScores = new ArrayList<>();
+        for(StudentCourse studentCourse : studentCourseList){
+
+            Course course = courseRepository.findById(studentCourse.getCourseId()).get();
+            SubjectScore sc = new SubjectScore();
+
+            sc.setCredit(course.getCredit());
+            sc.setFinishedDate(studentCourse.getFinishedDate());
+            sc.setScore(studentCourse.getScore());
+            sc.setStudentId(studentCourse.getStudentId());
+
+            subjectScores.add(sc);
+        }
+        return subjectScores;
+    }
+
+    /**
+     * 查询学生荣誉信息，按照荣誉创建时间排序
+     * @param studentId 学生id
+     * @return 荣誉列表
+     */
+    public List<Honor> displayHonor(int studentId){
+        if(!checkStudentExistence(studentId)){
+            throw new NotFoundException("No such student.");
+        }
+        return honorRepository.findByStudentId(studentId, Sort.by(Sort.Direction.DESC, "creationDate"));
+    }
+
+    /**
+     * 显示所有公告，默认按照公告发布时间排序
+     * @return 公告列表
+     */
+    public List<Notification> displayNotification(){
+        return notificationRepository.findAllByOrOrderByAnnouncementDateDesc();
+    }
+
+    /**
+     * 显示学生锻炼情况
+     * @exception NotFoundException 如果学生id不存在则抛出此异常
+     * @param studentId 学生id
+     * @return 锻炼情况列表
+     */
+    public List<Exercise> displayExercise(int studentId){
+        if(!checkStudentExistence(studentId)){
+            throw new NotFoundException("No such student.");
+        }
+        return exerciseRepository.findByStudentId(studentId);
+    }
+
+    /**
+     * 显示学生详细信息
+     * @exception  NotFoundException 如果学生id不存在则抛出此异常
+     * @param studentId 学生id
+     * @return 学生详细信息
+     */
+    public UserDetail displayStudentInfo(int studentId){
+        if(!checkStudentExistence(studentId)){
+            throw new NotFoundException("No such student.");
+        }
+        User user = userRepository.findById(studentId).get();
+        return user.getUserDetail();
+
+    }
+
+    /**
+     * 私有方法查询学生id是否存在
+     * @param studentId 学生id
+     * @return id存在返回true，否则返回false
+     */
+    private boolean checkStudentExistence(int studentId){
+        Optional<Student> optionalStudent = studentRepository.findById(studentId);
+        if(!optionalStudent.isPresent()){
+            return false;
+        }
+        return true;
+    }
+}

src/main/java/com/codesdream/ase/service/StudentService.java

@@ -17,6 +17,7 @@ import com.codesdream.ase.validator.GeneralValidator;
 import org.springframework.stereotype.Service;
 
 import javax.annotation.Resource;
+import java.util.Date;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
@@ -117,9 +118,11 @@ public class StudentService {
         Honor honor = optionalHonor.get();
         if(!description.isEmpty()){
             honor.setDescription(description);
+            honor.setLastModification(new Date());
         }
         if(!images.isEmpty()){
-            honor.setImages(images); 
+            honor.setImages(images);
+            honor.setLastModification(new Date());
         }
         return honorRepository.save(honor);
     }