Java怎么实现教材管理系统
发表于：2024-09-22 作者：千家信息网编辑
千家信息网最后更新 2024年09月22日，这篇文章给大家介绍Java怎么实现教材管理系统，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。一、项目简述功能包括： 管理员可以增删改查教材、教材商、入库教材、用户(用 户包括学生
千家信息网最后更新 2024年09月22日Java怎么实现教材管理系统
这篇文章给大家介绍Java怎么实现教材管理系统，内容非常详细，感兴趣的小伙伴们可以参考借鉴，希望对大家能有所帮助。
一、项目简述
功能包括： 管理员可以增删改查教材、教材商、入库教材、用户(用 户包括学生和教师)可以对教材商、教材进行。Excel的导入 导出操作。教师以领取入库的教材，可以退还教材。学生只能在对应的教师那里领取教材，并且可以退还教材、 查询自己已经领取的教材。并且对已领教材付款等等。
二、项目运行
环境配置： Jdk1.8 + Tomcat8.5 + mysql + Eclispe (IntelliJ IDEA,Eclispe,MyEclispe,Sts 都支持)
项目技术： JSP +Spring + SpringMVC + MyBatis + html+ css + JavaScript + JQuery + Ajax + layui+ maven等等。
查看班级选报信息：
@Servicepublic class TopicsServiceImpl implements TopicsService { @Autowired private MyClassMapper classMapper; @Autowired private StudentMapper studentMapper; @Autowired private SubjectselectedMapper subjectselectedMapper; @Autowired private SubjectMapper subjectMapper; @Autowired private HttpServletRequest request; /** * 查看班级选报信息 */ @Override public List classinfo(Long id) { MyClass className = classMapper.selectById(id);//查到班级名字 List students = studentMapper.selectByListAll(id);//根据student表里班级id查到用户所在班级的所有人 List projectselectedlist = new ArrayList<>(); List projectlist = new ArrayList<>(); Subjectselected projectselected = null; Subject project = null; for (int i = 0; i < students.size(); i++) { List tprojectselecteds = subjectselectedMapper.selectBystudentid(students.get(i).getId()); if (tprojectselecteds != null && tprojectselecteds.size() > 0) projectselected = tprojectselecteds.get(0); if (projectselected != null) { projectselectedlist.add(projectselected); } else { projectselected = new Subjectselected(); projectselected.setId(0L); projectselected.setIdProject(0L); projectselected.setIdStudent(0L); projectselected.setStuselectFlag(0L); projectselectedlist.add(projectselected); } } for (int i = 0; i < projectselectedlist.size(); i++) { if (projectselectedlist.get(i).getId() != 0) { projectlist.add(subjectMapper.selectById(projectselectedlist.get(i).getIdProject())); } else { project = new Subject(); project.setProjectname("无"); project.setTeachernames("无"); projectlist.add(project); } } List infolist = new ArrayList<>(); classinfo info = null; for (int i = 0; i < projectlist.size(); i++) { info = new classinfo(); info.setId(students.get(i).getId()); info.setClassName(className.getClassName()); info.setName(students.get(i).getName()); info.setStuNum(students.get(i).getStunum()); info.setProjectName(projectlist.get(i).getProjectname()); info.setTeacherNames(projectlist.get(i).getTeachernames()); info.setStuSelectFlag(projectselectedlist.get(i).getStuselectFlag()); infolist.add(info); } return infolist; } /** * 查看课题信息 * 通过classid */ @Override public List topics(Long id) { String specialty = classMapper.selectByspecialty(id); List projectlist = subjectMapper.selectByAll("%" + specialty + "%"); List topicsinfolist = new ArrayList<>(); topicsinfo info = null; for (int i = 0; i < projectlist.size(); i++) { info = new topicsinfo(); info.setProject_id(projectlist.get(i).getId()); info.setProjectType(subjectMapper.selectByprojectType(projectlist.get(i).getIdProjecttype().intValue())); info.setProjectSource(subjectMapper.selectByprojectSource(projectlist.get(i).getIdProjectsource().intValue())); info.setProjectName(projectlist.get(i).getProjectname()); info.setSelectFlag(projectlist.get(i).getSelectFlag()); info.setMarchSpecialty(projectlist.get(i).getMarchspecialty()); info.setTeacherNames(projectlist.get(i).getTeachernames()); topicsinfolist.add(info); } return topicsinfolist; } /** * 课题具体信息 */ @Override public List topicsinfo(Long project_id) { List listed = subjectselectedMapper.selectByprojectid(project_id);//中间表 request.getSession().setAttribute("listsize",listed.size()); List tolist = new ArrayList<>(); topicsto to = null; Student student = null; for (int i = 0; i < listed.size(); i++) { to = new topicsto(); student = studentMapper.selectByid(listed.get(i).getIdStudent()); if(student == null) continue; to.setStuNum(student.getStunum()); to.setName(student.getName()); to.setStuSelectFlag(listed.get(i).getStuselectFlag()); to.setClassName(classMapper.selectById(student.getIdClass()).getClassName()); tolist.add(to); } return tolist; } /** * 获取该用户是否选报了课题 */ public Long state(Student student) { Subjectselected project = null; List tprojectselecteds = subjectselectedMapper.selectBystudentid(student.getId()); if (tprojectselecteds != null && tprojectselecteds.size() > 0) project = tprojectselecteds.get(0); if (project == null) { return 0L; } else return project.getStuselectFlag(); } /** * 添加选题 */ @Override public void insertproject(String project, Long studentid) { Long projectid = subjectMapper.selectByprojectid(project); int flagid = subjectselectedMapper.insertenroll(projectid, studentid); } /** * 删除选题 */ @Override public int deleteprojectselectedid(Long id) { int flag = subjectselectedMapper.deleteBystudentId(id); return flag; } /** * 查询课题名 * */ public String selectprojectname(Long id){ String project_Name = subjectMapper.selectById(id).getProjectname(); return project_Name; } /** * 获取该题是否可选 */ @Override public Long flag(Long project_id) { return subjectMapper.selectByselectFlag(project_id); }} 班级信息查询业务：
@Servicepublic class ClassServiceImpl implements ClassService { @Autowired MyClassMapper myClassMapper; @Autowired SpecialtyService specialtyService; @Autowired StudentService studentService; @Override public List getClasses(Integer offset, String getName, Long specialtyid, Long id_institute) { // 设置分页查询条件 MyClassExample myClassExample = new MyClassExample(); // 添加查询条件 myClassExample = addCondition(myClassExample,offset,id_institute,getName,specialtyid); if(myClassExample==null) return null; //如果 offset 为 -1 则只查询 id 和 name 列 if(offset==-1) { return myClassMapper.selectByExampleSelective(myClassExample, MyClass.Column.id, MyClass.Column.className); }else{ return myClassMapper.selectByExampleSelective(myClassExample); } } @Override public long getClassesCount(Integer offset, String getName, Long specialtyid, Long id_institute) { // 设置分页查询条件 MyClassExample myClassExample = new MyClassExample(); // 添加查询条件 myClassExample = addCondition(myClassExample,offset,id_institute,getName,specialtyid); if(myClassExample==null) return 0; return myClassMapper.countByExample(myClassExample); } @Override public long delClass(MyClass myClass, Long id_institute) throws MyException { checkSpecialtyId(myClass,id_institute); return myClassMapper.deleteByPrimaryKey(myClass.getId()); } @Override public long putClass(MyClass myClass, Long id_institute) throws MyException { checkSpecialtyId(myClass,id_institute); return myClassMapper.updateByPrimaryKey(myClass); } @Override public long postClass(MyClass myClass, Long id_institute) throws MyException { checkSpecialtyId(myClass,id_institute); long count = getClassesCount(1,myClass.getClassName(),null, id_institute); if(count!=0) throw new MyException("该班级已存在"); return myClassMapper.insert(myClass); } @Override public long delClassBySpecialty(Long specialtyid) { return myClassMapper.deleteByExample(new MyClassExample().createCriteria().andIdSpecialtyEqualTo(specialtyid).example()); } public MyClassExample addCondition(MyClassExample myClassExample,Integer offset , Long id_institute , String keyWord , Long id_specialty){ //代表为超管，则可以查询所有； if(id_institute==-1) { return myClassExample.newAndCreateCriteria() .when(StringUtil.stringIsNotNull(keyWord), criteria -> criteria.andClassNameEqualTo(keyWord)) //根据关键字查询 .when(id_specialty!=null,criteria -> criteria.andIdSpecialtyEqualTo(id_specialty)) //根据指定教研室查询 .example() .when(offset!=-1 && offset != 0,criteria -> criteria.page(offset-1, 10)); } //查询出来当前学院的所有专业 List specialties = specialtyService.getSpecialtys(-1,null,null,id_institute); //提取 id列 列表 List specialtiesIDs = specialties.stream().map(Specialty::getId).collect(Collectors.toList()); if(specialtiesIDs.size()==0||specialtiesIDs==null) return null; return myClassExample.newAndCreateCriteria() .when(StringUtil.stringIsNotNull(keyWord),criteria -> criteria.andClassNameEqualTo(keyWord)) //根据关键字查询 .when(id_specialty!=null,criteria -> criteria.andIdSpecialtyEqualTo(id_specialty)) //根据指定教研室查询 // 查询的专业只能在当前的学院的教研室下 .andIdSpecialtyIn(specialtiesIDs) .example() .when(offset!=-1 && offset != 0,criteria -> criteria.page(offset-1, 10));// 查询第offest-1页数据（每页10条） } public void checkSpecialtyId(MyClass myClass ,Long id_institute) throws MyException { //如果为超管则不需要检查有没有权力 if(id_institute==-1) { return ; } long id_specialty = myClass.getIdSpecialty(); List specialtyes = specialtyService.getSpecialtys(1,null,null,id_institute); //如果被删除的专业是不属于本系教研室则提示没有权限 for(Specialty specialty :specialtyes) { if(specialty.getId()==id_specialty) return; } throw new MyException("没有权限操作"); } } 管理员业务操作：
@Servicepublic class AdminServiceImpl implements AdminService { @Autowired AdminMapper adminMapper; @Autowired SadminMapper sadminMapper; @Autowired GeneralPurposeMapper mapper; @Autowired PublicService publicService; //Session 保存时间（秒） private final Integer SAVE_TIME = 60*60*24; //超管 和 子管用一个登录 @Autowired StudentMapper studentMapper; @Autowired SubjectselectedMapper subjectselectedMapper; @Autowired SubjectMapper subjectMapper; @Autowired ProjectMapper projectMapper; @Autowired ClassMapper classMapper; @Autowired SpecialtyMapper specialtyMapper; @Autowired InstituteMapper instituteMapper; @Autowired HttpServletRequest request; @Autowired HttpServletResponse response; @Override public Msg login(String name, String pwd , HttpSession httpSession) { Sadmin sadmin = selectSadminByName(name); if(sadmin!=null){ //验证密码是否与数据库中的相同 if(sadmin.getPwd().equals(pwd)){ User user = new User(); //-1表示为超管 user.setId(-1L); user.setRole("sadmin"); user.setUserName(sadmin.getName()); //生成Token 存到 Cookie Cookie cookie = new Cookie("token",TokenUtil.createToken( user )); //该Cookie无法被js读取 cookie.setHttpOnly(true); cookie.setPath("/"); response.addCookie(cookie); return Msg.success(); } return Msg.error("密码错误"); }else { Admin admin = selectByName(name); if(admin == null){ return Msg.error("账号不存在"); }else { if(admin != null && admin.getPwd().equals(pwd)){ User user = new User(); user.setId(admin.getId()); user.setRole("admin"); user.setUserName(admin.getName()); Cookie cookie = new Cookie("token",TokenUtil.createToken( user )); cookie.setPath("/"); cookie.setHttpOnly(true); response.addCookie(cookie); return Msg.success();//账号密码正确 } return Msg.error("密码错误"); } } } @Override public Admin selectByName(String name) { //创建一个 Admin 实例 ，添加条件 为 Name == name AdminExample adminExample = new AdminExample(); adminExample.createCriteria().andNameEqualTo(name); //根据实例 来查询 List admin = adminMapper.selectByExample(adminExample); if( admin==null || admin.size()==0 ) { return null; } return admin.get(0); } @Override public Sadmin selectSadminByName(String name) { SadminExample sadminExample = new SadminExample(); sadminExample.createCriteria().andNameEqualTo(name); List sadmin = sadminMapper.selectByExample(sadminExample); if( sadmin==null|| sadmin.size()==0 ) return null; return sadmin.get(0); } @Override public int updatePwdByUserName(String name, String pwd) { AdminExample adminExample = new AdminExample(); adminExample.createCriteria().andNameEqualTo(name); Admin admin = new Admin(); admin.setPwd(pwd); adminMapper.updateByExampleSelective(admin,adminExample); return 0; } @Override public int updateSadminPwdByUserName(String name, String pwd) { SadminExample sadminExample = new SadminExample(); sadminExample.createCriteria().andNameEqualTo(name); Sadmin sadmin = new Sadmin(); sadmin.setPwd(pwd); return sadminMapper.updateByExampleSelective(sadmin, sadminExample); } // 班级的增加 @Override public int add_class(Long specialty_id, String class_name) { List classes = select_class(null, null, null, null, class_name); if (classes == null || classes.size() == 0) { Class class1 = new Class(); class1.setClassName(class_name); class1.setIdSpecialty(specialty_id); return classMapper.insert(class1); } return 0; } @Override public int addAdmin(Admin admin) { //添加的时候检测又没用户名重复的 publicService.CheckIfTheUsernameIsDuplicated(admin.getName()); return adminMapper.insert(admin); } @Override public int delAdmin(Admin admin) { return adminMapper.deleteByPrimaryKey(admin.getId()); } @Override public int updateAdmin(Admin admin) { //不更新username admin.setName(null); return adminMapper.updateByPrimaryKeySelective(admin); } @Override public List selectAdmins(Long offset) { if(offset!=null && offset==-1){ return adminMapper.selectByExampleSelective( new AdminExample(), Admin.Column.id ); } return adminMapper.selectByExample( new AdminExample() ); } // 学生的增删改查 @Override public int add_student(String userName, String stuNum, Long id_class, String name, String gender, String pwd){ Student ss = studentMapper.select_studentbyName(userName, stuNum); if (ss == null) { StudentWithBLOBs student = new StudentWithBLOBs(); student.setUsername(userName); student.setStunum(stuNum); student.setIdClass(id_class); student.setName(name); student.setGender(gender); student.setPwd(pwd); return studentMapper.insert(student); } return 0; } public int delete_class(Long class_id) { return classMapper.deleteByPrimaryKey(class_id); } @Override public int update_class(Long class_id, Long specialty_id, String class_name) { Class class1 = new Class(); class1.setId(class_id); class1.setIdSpecialty(specialty_id); class1.setClassName(class_name); return classMapper.updateByPrimaryKeySelective(class1); } @Override public List select_project(Long institute_id, Long section_id, String section_name) { return projectMapper.select_project(institute_id, null, null); } @Override public List select_studentXT_all(Long section_id, String section_name, Long specialty_id, String specialty_name, Long class_id, String class_name) { List static_students = studentMapper.select_studentXT_all(section_id, section_name, specialty_id, specialty_name, class_id, class_name); if (static_students != null && static_students.size() > 0) { for (int i = 0; i < static_students.size(); i++) { List projectselecteds = select_Projectselected(static_students.get(i).getId(), null); if (projectselecteds != null && projectselecteds.size() > 0) { static_students.get(i).setStuselectFlag("" + projectselecteds.get(0).getStuselectFlag()); static_students.get(i).setProjectname(projectselecteds.get(0).getProject_name()); static_students.get(i).setTeachernames(projectselecteds.get(0).getProject_teachers()); } else { static_students.get(i).setProjectname("未选题"); static_students.get(i).setTeachernames(""); } } } return static_students; } @Override public List select_class(Long institute_id, Long section_id, Long specialty_id, Long class_id, String class_name) { return classMapper.select_class(institute_id, section_id, specialty_id, class_id, class_name); } // 专业方向的增删改查 @Override public int add_specialty(Long section_id, String specialty_name) { List specialties = select_specialty(null, null, null, specialty_name); if (specialties == null || specialties.size() == 0) { Specialty specialty = new Specialty(); specialty.setIdSection(section_id); specialty.setSpecialtyName(specialty_name); return specialtyMapper.insert(specialty); } return 0; } @Override public int delete_student(Long student_id) { return studentMapper.deleteByPrimaryKey(student_id); } @Override public int update_student(Long student_id, String userName, String stuNum, Long id_class, String name, String gender, String pwd) { Student student = new Student(); student.setId(student_id); student.setUsername(userName); student.setStunum(stuNum); student.setIdClass(id_class); student.setName(name); student.setGender(gender); student.setPwd(pwd); return studentMapper.updateByPrimaryKeySelective((StudentWithBLOBs) student); } @Override public List select_student(Long institute_id, Long specialty_id, Long class_id, Long student_id, String name) { List static_students = studentMapper.select_Student(institute_id, specialty_id, class_id, student_id, name); if (static_students != null) { for (int i = 0; i < static_students.size(); i++) { Static_student static_student = static_students.get(i); List projectselected = select_Projectselected(static_student.getId(), null); if (projectselected != null && projectselected.size() != 0) { String s = ""; if (projectselected.get(0).getStuselectFlag() == 1) s = "选题待审核"; else if (projectselected.get(0).getStuselectFlag() == 2) s = "选题未通过"; else s = "选题通过"; static_student.setStuselectFlag(s); static_student.setProjectname(projectselected.get(0).getProject_name()); static_student.setTeachernames(projectselected.get(0).getProject_teachers()); } } return static_students; } return null; } // 通过学生id 或者 课题id 查 课题的选择 情况 public List select_Projectselected(Long student_id, Long project_id) { return subjectselectedMapper.select_Projectselected(student_id, project_id); } public List select_ProjectXQ(Long institute_id, Long section_id, String name) { List projects = subjectMapper.select_ProjectXQ(institute_id, section_id, name); if (projects != null) { for (int i = 0; i < projects.size(); i++) { if (projects.get(i).getSelectFlag() == 0) projects.get(i).setProjectGB("可选"); else if (projects.get(i).getSelectFlag() == 1) projects.get(i).setProjectGB("不可选"); } } return projects; } public int delete_specialty(Long specialty_id) { return specialtyMapper.deleteByPrimaryKey(specialty_id); } @Override public int update_specialty(Long specialty_id, Long section_id, String specialty_name) { Specialty specialty = new Specialty(); specialty.setId(specialty_id); specialty.setIdSection(section_id); specialty.setSpecialtyName(specialty_name); return specialtyMapper.updateByPrimaryKeySelective(specialty); } @Override public List select_specialty(Long institute_id, Long section_id, Long specialty_id, String specialty_name) { return specialtyMapper.select_specialty(institute_id, section_id, specialty_id, specialty_name); // 根据学院id 或者 教研室id 查所有专业方向 } @Override public List select_institute(Long institute_id, String institute_name) { InstituteExample instituteExample = new InstituteExample(); InstituteExample.Criteria criteria = instituteExample.createCriteria(); if (institute_id != null && institute_id != 0) criteria.andIdEqualTo(institute_id); if (institute_name != null && institute_name.length() > 0) criteria.andInstituteNameEqualTo(institute_name); return instituteMapper.selectByExample(instituteExample); } } 关于Java怎么实现教材管理系统就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
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