Java---题库管理系统（小项目）（二）

//用户service接口
import studio.lyl.questionbankmanagementsystem.entity.User;
/**
 * @Author: Re
 * @Date: 2020/12/7 22:46
 */
public interface IUserService {
    /**
     *用户登录
     * @param id
     * @param password
     * @return boolean
     * @throws Exception
     */
    boolean loginUserService(Integer id,String password) ;
    /**
     * 管理员登录
     * @param id
     * @param password
     * @return
     */
    boolean loginAdministratorService(Integer id,String password);
    /**
     *
     * @param user
     * @return boolean
     * @throws Exception
     */
    boolean registService(User user) ;
    /**
     * 创建用户
     * @param user
     * @return boolean
     */
    boolean insertUser(User user) ;
    /**
     * 根据id删除用户
     * @param id
     * @return boolean
     */
    boolean deleteUserById(Integer id) ;
    /**
     * 根据用户id修改用户信息
     * @param id
     * @return boolean
     */
    boolean updateUser(Integer id,User user) ;
    /**
     * 根据id查看用户信息
     * @param id
     * @return User
     */
    User selectUserById(Integer id) ;
    /**
     * 查看所有用户信息
     * @return
     * @throws Exception
     */
    String selectUser() ;
}
//题库service接口
import studio.lyl.questionbankmanagementsystem.entity.Questions;
import java.util.List;
/**
 * @Author: Re
 * @Date: 2020/12/9 15:55
 */
public interface IQuestionServise {
    /**
     * 增加题目
     * @param questions
     * @return boolean
     */
    boolean insetQuestion(Questions questions) ;
    /**
     * 根据序号删除题目
     * @param sign
     * @param type
     * @return boolean
     */
    boolean deleteQuestion(int sign,String type) ;
    /**
     * 根据序号删除题目
     * @param sign
     * @param questions
     * @param type
     * @return
     */
    boolean updateQuestion(int sign ,String type ,Questions questions) ;
    /**
     * 根据序号查看题目
     * @param sign
     * @param type
     * @return String
     */
    Questions selectQuestion(int sign, String type) ;
    /**
     * 查看一个类型全部的题目
     * @param type
     * @return List
     */
    List<Questions> selectQuestions(String type) ;
    /**
     * 根据题目和序号查看改题目的答案
     * @param type
     * @return Questions
     */
    Questions selectAnswer(int sign,String type);
}
//笔记service接口
package studio.lyl.questionbankmanagementsystem.service;
import studio.lyl.questionbankmanagementsystem.entity.Note;
import java.util.List;
/**
 * @Author: Re
 * @Date: 2020/12/9 15:46
 */
public interface INoteService {
    /**
     * 增加笔记
     * @param note
     * @return boolean
     */
    boolean insetNote(Note note) ;
    /**
     * 根据用户id删除笔记
     * @param id
     * @param sign
     * @return boolean
     */
    boolean deleteNote(Integer id,Integer sign) ;
    /**
     * 根据用户id更改笔记
     * @param id
     * @param note
     * @param sign
     * @return
     */
    boolean updateNote(Integer id,Integer sign,Note note) ;
    /**
     * 根据用户id查看笔记
     * @param id
     * @return
     */
    List<Note> selectNoteById(Integer id) ;
    /**
     * 查看所有的笔记
     * @return
     */
    List<Note> selectNote() ;
}

//用户Service接口实现
import studio.lyl.questionbankmanagementsystem.dao.IUserDao;
import studio.lyl.questionbankmanagementsystem.dao.impl.UserDaoImpl;
import studio.lyl.questionbankmanagementsystem.entity.User;
import studio.lyl.questionbankmanagementsystem.service.IUserService;
import java.util.List;
/**
 * @Author: Re
 * @Date: 2020/12/11 20:50
 */
public class UserServiceImpl implements IUserService {
    IUserDao iUserDao=new UserDaoImpl();
    @Override
    public boolean loginUserService(Integer id, String password) {
        List<User> userList=iUserDao.selectUserById(id);
        User user=userList.get(0);
        if(user==null||user.getLevel()==1){
            System.out.println("账号错误！");
            return false;
        }else {
            for (int i = 0; i < userList.size(); i++) {
                if(user.getPassword().equals(password)){
                    System.out.println("登录成功。");
                    return true;
                }
            }
        }
        System.out.println("密码错误！");
        return false;
    }
    @Override
    public boolean loginAdministratorService(Integer id, String password) {
        List<User> userList=iUserDao.selectUserById(id);
        if (userList.size()==0){
            System.out.println("账号错误");
            return false;
        }else {
            User user=userList.get(0);
            if (user == null || user.getLevel() == 0) {
                System.out.println("账号错误！");
                return false;
            } else {
                for (int i = 0; i < userList.size(); i++) {
                    if (user.getPassword().equals(password)) {
                        System.out.println("登录成功。");
                        return true;
                    }
                }
            }
        }
        System.out.println("密码错误！");
        return false;
    }
    @Override
    public boolean registService(User user) {
        List<User> userList=iUserDao.selectUserById(user.getId());
        if(userList.size()==0){
            iUserDao.insertUser(user);
            System.out.println("注册用户成功");
            return true;
        }
        System.out.println("用户已存在，注册失败");
        return false;
    }
    @Override
    public boolean insertUser(User user) {
        List<User> userList=iUserDao.selectUserById(user.getId());
        if(userList.size()==0){
            iUserDao.insertUser(user);
            System.out.println("增加用户成功");
            return true;
        }
        System.out.println("用户已存在，增加用户失败");
        return false;
    }
    @Override
    public boolean deleteUserById(Integer id) {
        List<User> userList=iUserDao.selectUserById(id);
        if(userList.size()==0){
            System.out.println("用户不存在");
            return false;
        }
        iUserDao.deleteUserById(id);
        System.out.println("用户删除成功");
        return true;
    }
    @Override
    public boolean updateUser(Integer id, User user)  {
        List<User> userList=iUserDao.selectUserById(id);
        if(userList.size()==0){
            System.out.println("用户不存在，更改用户信息失败");
            return false;
        }
        iUserDao.updateUser(id, user);
        System.out.println("更改用户信息成功");
        return true;
    }
    @Override
    public User selectUserById(Integer id)  {
        List<User> userList=iUserDao.selectUserById(id);
        if(userList.size()==0){
            return null;
        }else {
            User user=userList.get(0);
            System.out.println(user);
            return user;
        }
    }
    @Override
    public String selectUser() {
        List<User> userList= iUserDao.selectUser();
        for (int i = 0; i < userList.size(); i++) {
            User user=userList.get(i);
            System.out.println(user);
        }
        return userList.toString();
    }
}
//题库Service接口实现
import studio.lyl.questionbankmanagementsystem.dao.IQuestionDao;
import studio.lyl.questionbankmanagementsystem.dao.impl.QuestionDaoImpl;
import studio.lyl.questionbankmanagementsystem.entity.Questions;
import studio.lyl.questionbankmanagementsystem.service.IQuestionServise;
import java.util.List;
/**
 * @Author: Re
 * @Date: 2020/12/9 16:11
 */
public class QuestionServiceImpl implements IQuestionServise {
    IQuestionDao iQuestionDao=new QuestionDaoImpl();
    @Override
    public boolean insetQuestion(Questions questions) {
        try {
            iQuestionDao.insetQuestion(questions);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return true;
    }
    @Override
    public boolean deleteQuestion(int sign, String type) {
        List<Questions> questionsList=iQuestionDao.selectQuestion(sign,type);
        if(questionsList.size()==0){
            System.out.println("题目不存在！");
            return false;
        }else {
            try {
                iQuestionDao.deleteQuestion(sign, type);
            } catch (Exception e) {
                e.printStackTrace();
            }
            System.out.println("题目已删除");
            return true;
        }
    }
    @Override
    public boolean updateQuestion(int sign, String type, Questions questions) {
        List<Questions> questionsList=iQuestionDao.selectQuestion(sign, type);
        if(questionsList.size()==0){
            System.out.println("题目不存在！");
            return false;
        }else {
            try {
                iQuestionDao.deleteQuestion(sign, type);
                iQuestionDao.insetQuestion(questions);
            } catch (Exception e) {
                e.printStackTrace();
            }
            System.out.println("题目更改成功。");
            return true;
        }
    }
    @Override
    public Questions selectQuestion(int sign, String type) {
        List<Questions> questionsList=iQuestionDao.selectQuestion(sign, type);
        if(questionsList.size()==0){
            return null;
        }else {
            Questions questions=questionsList.get(0);
            return  questions;
        }
    }
    @Override
    public List<Questions> selectQuestions(String type) {
        List<Questions> questionsList=iQuestionDao.selectQuestions(type);
        if(questionsList.size()==0){
            System.out.println("该题库暂无题目");
            return null;
        }else {
            for (int i = 0; i < questionsList.size(); i++) {
                System.out.println(questionsList.get(i));
            }
            return questionsList;
        }
    }
    @Override
    public Questions selectAnswer( int sign,String type) {
        List<Questions> questionsList=iQuestionDao.selectQuestion(sign,type);
        if(questionsList.size()==0){
            System.out.println("该题库暂无题目");
            return null;
        }else {
            Questions questions=questionsList.get(0);
            System.out.println("本题答案为:   "+questions.getAnswer());
            return null;
        }
    }
}
//笔记Service接口实现
import studio.lyl.questionbankmanagementsystem.dao.INoteDao;
import studio.lyl.questionbankmanagementsystem.dao.impl.NoteDaoImpl;
import studio.lyl.questionbankmanagementsystem.entity.Note;
import studio.lyl.questionbankmanagementsystem.service.INoteService;
import java.util.ArrayList;
import java.util.List;
/**
 * @Author: Re
 * @Date: 2020/12/11 20:17
 */
public class NoteServiceImpl implements INoteService {
    INoteDao iNoteDao=new NoteDaoImpl();
    @Override
    public boolean insetNote(Note note) {
        iNoteDao.insetNote(note);
        System.out.println("添加笔记成功");
        return true;
    }
    @Override
    public boolean deleteNote(Integer id,Integer sign) {
        List<Note> noteList=iNoteDao.selectNoteById(id);
        if(noteList.size()==0){
            System.out.println("笔记不存在！");
            return false;
        }else {
            iNoteDao.deleteNote(id,sign);
            System.out.println("笔记已删除。");
            return true;
        }
    }
    @Override
    public boolean updateNote(Integer id,Integer sign, Note note) {
        List<Note> noteList = iNoteDao.selectNoteById(id);
        if (noteList.size() == 0) {
            System.out.println("笔记不存在！");
            return false;
        } else {
            List<Note> noteListBySign = new ArrayList<>();
            for (int i = 0; i < noteList.size(); i++) {
                Note noteBySign = noteList.get(i);
                if (noteBySign.getSign() == sign) {
                    noteListBySign.add(noteBySign);
                }
            }
            if (noteListBySign.size() == 0) {
                System.out.println("笔记不存在");
            } else {
                iNoteDao.updateNote(id, sign, note);
                System.out.println("笔记已更改。");
            }
        }
        return true;
    }
    @Override
    public List<Note> selectNoteById(Integer id) {
        List<Note> noteList=iNoteDao.selectNoteById(id);
        if(noteList.size()==0){
            return null;
        }else {
            return noteList;
        }
    }
    @Override
    public List<Note> selectNote() {
        List<Note> noteList=iNoteDao.selectNote();
        if(noteList.size()==0){
            System.out.println("现无笔记存在。");
            return null;
        }else {
            return noteList;
        }
    }
}

//用户Controller层
import studio.lyl.questionbankmanagementsystem.entity.User;
import studio.lyl.questionbankmanagementsystem.service.IUserService;
import studio.lyl.questionbankmanagementsystem.service.impl.UserServiceImpl;
/**
 * @Author: Re
 * @Date: 2020/12/11 22:05
 */
public class UserController {
    IUserService iUserService=new UserServiceImpl();
    /**
     *登录用户
     * @param id
     * @param password
     * @return boolean
     * @throws Exception
     */
    public boolean loginUser(Integer id,String password) {
        return iUserService.loginUserService(id, password);
    }
    public boolean loginAdministrator(Integer id,String password){
        return iUserService.loginAdministratorService(id,password);
    }
    /**
     *注册用户
     * @param user
     * @return boolean
     * @throws Exception
     */
    public boolean registUser(User user) {
        return iUserService.registService(user);
    }
    /**
     * 创建用户
     * @param user
     * @return boolean
     */
    public boolean insertUser(User user) {
        return iUserService.insertUser(user);
    }
    /**
     * 根据id删除用户
     * @param id
     * @return boolean
     */
    public boolean deleteUserById(Integer id) {
        return iUserService.deleteUserById(id);
    }
    /**
     * 根据用户id修改用户信息
     * @param id
     * @return boolean
     */
    public boolean updateUser(Integer id,User user) {
        return iUserService.updateUser(id, user);
    }
    /**
     * 根据id查看用户信息
     * @param id
     * @return String
     */
    public User selectUserById(Integer id) {
        return iUserService.selectUserById(id);
    }
    /**
     * 查看所有用户信息
     * @return
     * @throws Exception
     */
    public String selectUser() {
        return iUserService.selectUser();
    }
}
//题库controller层
import studio.lyl.questionbankmanagementsystem.entity.Questions;
import studio.lyl.questionbankmanagementsystem.service.IQuestionServise;
import studio.lyl.questionbankmanagementsystem.service.impl.QuestionServiceImpl;
import java.util.List;
/**
 * @Author: Re
 * @Date: 2020/12/11 22:02
 */
public class QuestionsController {
    IQuestionServise iQuestionServise=new QuestionServiceImpl();
    /**
     * 增加题目
     * @param questions
     * @return boolean
     */
    public boolean insetQuestion(Questions questions) {
        return iQuestionServise.insetQuestion(questions);
    }
    /**
     * 根据序号删除题目
     * @param sign
     * @param type
     * @return boolean
     */
    public boolean deleteQuestion(int sign,String type) {
        return iQuestionServise.deleteQuestion(sign, type);
    }
    /**
     * 根据序号更改题目
     * @param sign
     * @param questions
     * @param type
     * @return
     */
    public boolean updateQuestion(int sign ,String type ,Questions questions) {
        return iQuestionServise.updateQuestion(sign, type, questions);
    }
    /**
     * 根据序号查看题目
     * @param sign
     * @param type
     * @return question
     */
    public Questions selectQuestion(int sign, String type) {
        return iQuestionServise.selectQuestion(sign, type);
    }
    /**
     * 查看一个类型中所有的题目
     * @param type
     * @return
     * @throws Exception
     */
    public List<Questions> selectQuestions(String type) {
        return iQuestionServise.selectQuestions(type);
    }
    /**
     * 根据题目类型和序号查看题目答案
     * @param type
     * @return Question
     */
    public Questions selectAnswer(int sign,String type){
        return iQuestionServise.selectAnswer(sign , type);
    }
}
//笔记controller层
package studio.lyl.questionbankmanagementsystem.controller;
import studio.lyl.questionbankmanagementsystem.entity.Note;
import studio.lyl.questionbankmanagementsystem.service.INoteService;
import studio.lyl.questionbankmanagementsystem.service.impl.NoteServiceImpl;
import java.util.List;
/**
 * @Author: Re
 * @Date: 2020/12/11 21:58
 */
public class NoteController {
    INoteService iNoteService=new NoteServiceImpl();
    /**
     * 增加笔记
     * @param note
     * @return boolean
     */
    public boolean insetNote(Note note) {
        return iNoteService.insetNote(note);
    }
    /**
     * 根据用户id删除笔记
     * @param id
     * @return boolean
     */
    public boolean deleteNote(Integer id,Integer sign) {
        return iNoteService.deleteNote(id,sign);
    }
    /**
     * 根据用户id更改笔记
     * @param id
     * @param sign
     * @param note
     * @return
     */
    public boolean updateNote(Integer id,Integer sign,Note note) {
        return iNoteService.updateNote(id,sign ,note);
    }
    /**
     * 根据用户id查看笔记
     * @param id
     * @return
     */
    public List<Note> selectNoteById(Integer id) {
        return iNoteService.selectNoteById(id);
    }
    /**
     * 查看所有的笔记
     * @return
     */
    public List<Note> selectNote() {
        return iNoteService.selectNote();
    }
}