基于ssm+layui的学生管理系统

package com.niudada.controller; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.niudada.entity.*; import com.niudada.service.*; import com.niudada.utils.MapControl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.web.bind.annotation.*; import javax.servlet.http.HttpSession; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; @Controller @RequestMapping("/section") public class SectionController { private static final String LIST = "section/list"; private static final String ADD = "section/add"; private static final String UPDATE = "section/update"; @Autowired private SectionService sectionService; @Autowired private SubjectService subjectService; @Autowired private ClazzService clazzService; @Autowired private TeacherService teacherService; @Autowired private CourseService courseService; @Autowired private StudentService studentService; @Autowired public ScoreService scoreService; //跳转添加页面 @GetMapping("/add") public String create(Integer clazzId, ModelMap modelMap) { //查询所有的老师，存储到request域 List<Teacher> teachers = teacherService.query(null); //查询所有的课程，存储到request域 List<Course> courses = courseService.query(null); modelMap.addAttribute("teachers", teachers); modelMap.addAttribute("courses", courses); modelMap.addAttribute("clazzId", clazzId); return ADD; } //添加操作 @PostMapping("/create") @ResponseBody public Map<String, Object> create(@RequestBody Section section) { int result = sectionService.create(section); if (result <= 0) { return MapControl.getInstance().error().getMap(); } return MapControl.getInstance().success().getMap(); } //根据id删除 @PostMapping("/delete/{id}") @ResponseBody public Map<String, Object> delete(@PathVariable("id") Integer id) { int result = sectionService.delete(id); if (result <= 0) { return MapControl.getInstance().error().getMap(); } return MapControl.getInstance().success().getMap(); } //批量删除 @PostMapping("/delete") @ResponseBody public Map<String, Object> delete(String ids) { int result = sectionService.delete(ids); if (result <= 0) { return MapControl.getInstance().error().getMap(); } return MapControl.getInstance().success().getMap(); } //修改操作 @PostMapping("/update") @ResponseBody public Map<String, Object> update(@RequestBody Section section) { int result = sectionService.update(section); if (result <= 0) { return MapControl.getInstance().error().getMap(); } return MapControl.getInstance().success().getMap(); } //根据id查询，跳转修改页面 @GetMapping("/detail/{id}") public String detail(@PathVariable("id") Integer id, ModelMap modelMap) { //查询出要修改的班级 Section section = sectionService.detail(id); //查询所有的老师 List<Teacher> teachers = teacherService.query(null); //查询所有的课程 List<Course> courses = courseService.query(null); modelMap.addAttribute("teachers", teachers); modelMap.addAttribute("courses", courses); modelMap.addAttribute("section", section); return UPDATE; } //查询所有 @PostMapping("/query") @ResponseBody public Map<String, Object> query(@RequestBody Section section) { //查询所有的开课信息 List<Section> list = sectionService.query(section); //查询所有的老师 List<Teacher> teachers = teacherService.query(null); //查询所有的班级 List<Course> courses = courseService.query(null); //设置关联 list.forEach(entity -> { teachers.forEach(teacher -> { //判断开课表的teacherId和老师表的id是否一致 if (teacher.getId() == entity.getTeacherId()) { entity.setTeacher(teacher); } }); courses.forEach(course -> { //判断开课表中的courseId和课程表的id是否一致 if (course.getId() == entity.getCourseId()) { entity.setCourse(course); } }); }); //查询宗记录条数 Integer count = sectionService.count(section); return MapControl.getInstance().success().page(list, count).getMap(); } //跳转列表页面 @GetMapping("/list") public String list() { return LIST; } //生成zTree树形 @PostMapping("/tree") @ResponseBody public List<Map> tree() { List<Subject> subjects = subjectService.query(null); List<Clazz> clazzes = clazzService.query(null); List<Map> list = new ArrayList<>(); subjects.forEach(subject -> { Map<String, Object> map = new HashMap<>(); map.put("id", subject.getId()); map.put("name", subject.getSubjectName()); map.put("parentId", 0); List<Map<String, Object>> childrenList = new ArrayList<>(); clazzes.forEach(clazz -> { if (subject.getId() == clazz.getSubjectId()) { Map<String, Object> children = new HashMap<>(); children.put("id", clazz.getId()); children.put("name", clazz.getClazzName()); children.put("parentId", subject.getId()); childrenList.add(children); } }); map.put("children", childrenList); list.add(map); }); ObjectMapper objectMapper = new ObjectMapper(); try { String jsonString = objectMapper.writeValueAsString(list); } catch (JsonProcessingException e) { e.printStackTrace(); } return list; } //跳转开课信息列表页面 @GetMapping("/student_section") public String student_section() { return "section/student_section"; } @PostMapping("/query_student_section") @ResponseBody public Map<String, Object> student_section(HttpSession session) { Student student = (Student) session.getAttribute("user"); List<Section> sections = sectionService.queryByStudent(student.getId()); List<Clazz> clazzes = clazzService.query(null); List<Teacher> teachers = teacherService.query(null); List<Course> courses = courseService.query(null); sections.forEach(section -> { clazzes.forEach(clazz -> { if (section.getClazzId() == clazz.getId()) { section.setClazz(clazz); } }); teachers.forEach(teacher -> { if (section.getTeacherId() == teacher.getId()) { section.setTeacher(teacher); } }); courses.forEach(course -> { if (section.getCourseId() == course.getId()) { section.setCourse(course); } }); }); return MapControl.getInstance().success().add("data", sections).getMap(); } @GetMapping("/teacher_section") public String teacher_section() { return "section/teacher_section"; } @PostMapping("/query_teacher_section") @ResponseBody public Map<String, Object> query_teacher_section(HttpSession session) { //获取登录老师的信息 Teacher teacher = (T