gzq

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

@@ -17,4 +17,10 @@ public class SubjectScore {
 
     private Date finishedDate;
 
+    private  boolean isFailed;
+
+    public  boolean getIsFailed(){
+        return this.isFailed;
+    }
+
 }

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

@@ -26,4 +26,7 @@ public class StudentCourse {
 
     Date finishedDate;
 
+    public boolean getIsFailed() {
+        return this.isFailed;
+    }
 }

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

@@ -11,4 +11,7 @@ import java.util.List;
 public interface StudentCourseRepository extends JpaRepository<StudentCourse, Integer> {
     List<StudentCourse> findByStudentId(int studentId);
     List<StudentCourse> findByStudentId(int studentId, Sort sort);
+    List<StudentCourse> findByStudentIdAndTerm(int studentId,int term);
+    List<StudentCourse> findByStudentIdAndTerm(int studentId,int term,Sort sort);
+
 }

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

@@ -5,6 +5,7 @@ import org.springframework.data.domain.Sort;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
 import java.util.Optional;
 
 @Repository

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

@@ -0,0 +1,153 @@
+package com.codesdream.ase.service;
+import com.codesdream.ase.component.student.SubjectScore;
+import com.codesdream.ase.model.student.Course;
+import com.codesdream.ase.model.student.Student;
+import com.codesdream.ase.model.student.StudentCourse;
+import com.codesdream.ase.repository.student.CourseRepository;
+import com.codesdream.ase.repository.student.StudentCourseRepository;
+import com.codesdream.ase.repository.student.StudentRepository;
+import org.apache.xmlbeans.impl.xb.xsdschema.Public;
+import org.springframework.data.domain.Sort;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.Resource;
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+public class JudgeService {
+
+    @Resource
+    StudentCourseRepository scRepo;
+
+    @Resource
+    CourseRepository courseRepository;
+
+    @Resource
+    StudentRepository students;
+
+    /**
+     * 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 term 学期
+     * @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 term, 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.findByStudentIdAndTerm(studentId,term);
+        }else{
+            studentCourseList = scRepo.findByStudentIdAndTerm(studentId,term,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;
+    }
+
+    /**
+     * 判断某学生某学期是否有学业警告
+     * @param studentId 学生id
+     * @param term 学期
+     * @return  是否警告
+     */
+    public boolean judgeWarning(int studentId,int term){
+        List<SubjectScore> scores= displayScore(studentId,term,1);
+        double sum=0;
+        for(SubjectScore ss:scores){
+            if(ss.getScore()>=60.0||ss.getIsFailed()==false){
+                sum+=ss.getCredit();
+            }
+        }
+        if(sum<15.0){
+            return true;
+        }
+        else return false;
+    }
+    /**
+     * 判断某学生某学期选课学分是否低于20分
+     * @param studentId 学生id
+     * @param term 学期
+     * @return  是否低于20学分
+     */
+
+    public boolean judgeLowCredit(int studentId,int term){
+        List<SubjectScore> scores= displayScore(studentId,term,1);
+        double sum=0;
+        for(SubjectScore ss:scores){
+                sum+=ss.getCredit();
+        }
+        if(sum<20.0){
+            return true;
+        }
+        else return false;
+    }
+
+//    /**
+//     * 获取某个学期，所有有学业预警的学生
+//     * @param term  学期
+//     * @return  学生列表
+//     */
+//    public List<Student> getWarning(int term){
+//
+//        List<Student> result= new ArrayList<>();
+//        for (Student s:students){
+//            if(judgeWarning(s.getId(),term)){
+//                result.add(s);
+//            }
+//        }
+//        return result;
+//    }
+//    /**
+//     * 获取某个学期，所有选课低于20分的学生
+//     * @param term  学期
+//     * @return  学生列表
+//     */
+//    public List<Student> getLowCredit(int term){
+//
+//        List<Student> result= new ArrayList<>();
+//        for (Student s:students){
+//            if(judgeLowCredit(s.getId(),term)){
+//                result.add(s);
+//            }
+//        }
+//        return result;
+//    }
+
+
+
+}

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

@@ -94,6 +94,7 @@ public class StaticsService {
             sc.setFinishedDate(studentCourse.getFinishedDate());
             sc.setScore(studentCourse.getScore());
             sc.setStudentId(studentCourse.getStudentId());
+            sc.setFailed(studentCourse.getIsFailed());
 
             subjectScores.add(sc);
         }

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

@@ -149,4 +149,6 @@ public class StudentService {
         return studentRepository.save(student);
     }
 
+
+
 }