在线考试系统

package com.tarena.exam.client.gui;

import javax.swing.JFrame;

import com.tarena.util.GuiUtil;

public class BaseFrame
  extends JFrame {
 
  @Override
  public void setVisible(boolean b) {
    GuiUtil.centerWindow(this);
    super.setVisible(b);
  }
 
}

package com.tarena.exam.client.gui;

import java.util.List;

import javax.swing.JFrame;
import javax.swing.JOptionPane;

import com.sun.java.swing.plaf.windows.resources.windows;
import com.tarena.exam.entity.ExamInfo;
import com.tarena.exam.entity.QuestionInfo;
import com.tarena.exam.entity.User;
import com.tarena.exam.service.ExamService;
import com.tarena.exam.service.NameOrPasswordException;

/**
 * Context 上下文. 是当前环境, 是当前环境的控制器
 * @author teacher
 */
//TODO Day02 添加类
public class ClientContext {
  /**
   * 控制器依赖于ExamService提供的服务
   */
  private ExamService service;
 
  private LoginFrame loginFrame;
  //TODO Day03 1.a
  private MenuFrame menuFrame;
 
  //TODO Day04 3.b
  private ExamFrame examFrame;
 
  //TODO Day04 4.a
  private ExamInfo examInfo ;
  private QuestionInfo questionInfo ;

  //TODO Day05 1.a
  private WelcomeWindow welcome;

//TODO Day05 3.b
  private User user;

  /**
   * 构造器注入
   */
  public ClientContext(ExamService service) {
    this.service = service;
  }
 
  /**
   * 登录方法
   * @param source 发出登录请求的界面
   * @param userId
   * @param passwd
   */
  public void login(JFrame source,
      String userId, String passwd) {
    try{
      int id = Integer.parseInt(userId);
      User u = service.login(id, passwd);
      //TODO Day03 1.b
      //JOptionPane.showMessageDialog(
      //    source, "您好:"+ u.getName());
      source.setVisible(false);
      menuFrame.setVisible(true);
      //TODO Day03 1.c
      //centerWindow(menuFrame);
      //TODO Day05 3.b
      this.user = u;
      //TODO Day05 3.a
      menuFrame.updateView();
     
      //TODO Day02 PM 加入数字ID检查
    }catch(NumberFormatException e){
      e.printStackTrace();
      JOptionPane.showMessageDialog(
          source, "ID必须输入数字!");
    }catch(NameOrPasswordException e){
      e.printStackTrace();
      JOptionPane.showMessageDialog(
          source, e.getMessage());
    }
  }
//  //TODO Day03 1.c
//  private void centerWindow(JFrame win){
//    Toolkit toolkit =
//      Toolkit.getDefaultToolkit();
//    Dimension scr = toolkit.getScreenSize();
//    int x = (scr.width-win.getWidth())/2;
//    int y = (scr.height-win.getHeight())/2;
//    win.setLocation(x,y);
//  }
 
  //TODO Day02 PM
  public void exit(JFrame source){
    int val = JOptionPane.showConfirmDialog(
        source, "真的离开考试系统吗?");
    if(val==JOptionPane.YES_OPTION){
      System.exit(0);
    }
  }
 
  public void show(){
    //TODO Day03 1.c
    loginFrame.setVisible(true);
    //centerWindow(loginFrame);
    //TODO Day05 1.b
    welcome.setVisible(true);
    new Thread(){
      public void run() {
        try {
          Thread.sleep(1000);
        } catch (InterruptedException e) {
          e.printStackTrace();
        }
        welcome.setVisible(false);
      }
    }.start();
  }

  public LoginFrame getLoginFrame() {
    return loginFrame;
  }

  public void setLoginFrame(LoginFrame loginFrame) {
    this.loginFrame = loginFrame;
  }

  public ExamService getService() {
    return service;
  }

  public void setService(ExamService service) {
    this.service = service;
  }
  //TODO Day03 1.a
  public void setMenuFrame(MenuFrame menuFrame) {
    this.menuFrame = menuFrame;
  }
//TODO Day04 3.b
  public void setExamFrame(ExamFrame examFrame) {
    this.examFrame = examFrame;
  }
  //TODO Day04 3.b
  public void start(MenuFrame source) {
    try{
      //开始考试, 获得详细的考试信息, 包括
      //考生, 考试时间, 考试名称等
      examInfo= service.start();//包含异常,考试已经结束了
      questionInfo= service.getQuestion(0);
      //切换界面, 到考试界面
      examFrame.setVisible(true);
      //更新考试界面. 显示考试信息, 和第一道题
      examFrame.updateView();
      //TODO Day05 2
      examFrame.setAlwaysOnTop(true);
      menuFrame.setVisible(false);
    }catch(Exception e){
      e.printStackTrace();
      JOptionPane.showMessageDialog(
          source, e.getMessage());
    }
   
  }
//TODO Day04 4.a
  public ExamInfo getExamInfo() {
    return examInfo;
  }
//TODO Day04 4.a
  public QuestionInfo getQuestionInfo() {
    return questionInfo;
  }
//TODO Day04 4.b.3
//界面答案更新了
  public void answerChanged(List<Integer> ans) {
    getQuestionInfo().getUserAnswers().clear();
    getQuestionInfo().getUserAnswers().addAll(ans);
  }
//TODO Day04 7.b
  public void next(JFrame source){
    try {
      int idx =
        questionInfo.getQuestionIndex();
      //发送当前题目的答案到服务端
      service.sendUserAnswers(idx,
          questionInfo.getUserAnswers());
      //获取下一个题目
      idx++;
      questionInfo =
        service.getQuestion(idx);
      //更新examFrame界面
      examFrame.updateView();
    } catch (Exception e) {
      e.printStackTrace();
      JOptionPane.showMessageDialog(source, e.getMessage());
    }
  }
//TODO Day04 7.b
  public void prev(JFrame source){
    try {
      int idx =
        questionInfo.getQuestionIndex();
      //发送当前题目的答案到服务端
      service.sendUserAnswers(idx,
          questionInfo.getUserAnswers());
      //获取下一个题目
      idx--;
      questionInfo =
        service.getQuestion(idx);
      //更新examFrame界面
      examFrame.updateView();
    } catch (Exception e) {
      e.printStackTrace();
      JOptionPane.showMessageDialog(source, e.getMessage());
    }

  }
//TODO Day04 8.b
  public void commit(JFrame source) {
    int val = JOptionPane.showConfirmDialog(
        source, "你完了吗!");
    if(val!=JOptionPane.YES_OPTION){
      return ;
    }
    try {
      //发送当前题的答案
      int idx = questionInfo.getQuestionIndex();
      service.sendUserAnswers(
          idx, questionInfo.getUserAnswers());
      int r = service.commit();
      JOptionPane.showMessageDialog(
          source, "你的分数:"+ r);
      examFrame.setVisible(false);
      menuFrame.setVisible(true);
    } catch (Exception e) {
      e.printStackTrace();
      JOptionPane.showMessageDialog(source, e.getMessage());
    }

  }
//TODO Day05 1.a
  public void setWelcomeWindow(
      WelcomeWindow welcome) {
    this.welcome = welcome;
  }
  //Day05 3.c
  public User getUser() {
    return this.user;
  }
  //Day05 4.b
  public void result(JFrame source) {
    try {
      int result = service.result();
      JOptionPane.showMessageDialog(
          source, "您的考试成绩:" + result);
      exit(source);
    } catch (Exception e) {
      e.printStackTrace();
      JOptionPane.showMessageDialog(source, e.getMessage());
    }
  }
 
}

package com.tarena.exam.client.gui;

import java.awt.BorderLayout;
import java.awt.Checkbox;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.List;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.border.EmptyBorder;

import com.tarena.exam.entity.ExamInfo;
import com.tarena.exam.entity.Question;

public class ExamFrame
  extends BaseFrame{

  //TODO Day04 4.b.1
  private ClientContext context;
  //TODO Day04 4.b.2
  private JLabel infolabel;
//TODO Day04 4.b.3
  private JLabel numberlabel;
//TODO Day04 4.b.3
  private JTextPane questionTextPane;
 
//TODO Day04 4.b.3
  private JButton prevButton;
  private JButton nextButton;
  private JPanel optionPane;
  private List<OptionCheckBox> optionList=
    new ArrayList<OptionCheckBox>();
 
  public ExamFrame() {
    init();
  } 
  //TODO Day04 4.b.1
  public ExamFrame(ClientContext context) {
    init();
    this.context = context;
  }
  private void init(){
    setSize(600, 400);
    setTitle("达内在线测评");
    setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
    //TODO Day04 8.a
    addWindowListener(new WindowAdapter(){
      public void windowClosing(WindowEvent e) {
        context.commit(ExamFrame.this);
      }
    });
    setContentPane(createContentPane());
  }
  private JPanel createContentPane(){
    JPanel p =
      new JPanel(new BorderLayout());
    p.add(BorderLayout.NORTH,
        createTitle());
    p.add(BorderLayout.CENTER,
        createQuestionPane());
    p.add(BorderLayout.SOUTH,
        createToolsPane());
    return p;
  }
 
  private JPanel createToolsPane() {
    JPanel p = new JPanel(new BorderLayout());
    //TODO Day04 4.b.3
    numberlabel = new JLabel("题号:");
    p.add(BorderLayout.WEST, numberlabel);
    p.add(BorderLayout.CENTER, createBtnPane());
    p.add(BorderLayout.EAST, new JLabel("剩余时间:"));
    p.setBorder(new EmptyBorder(10,10,10,10));
    return p;
  }
  private JPanel createBtnPane() {
    JPanel p = new JPanel(new FlowLayout());
    JButton prev = new JButton("<<前一个");
    prevButton = prev;
    //TODO Day04 7.a
    prev.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        context.prev(ExamFrame.this);
      }
    });
    p.add(prev);
    JButton next = new JButton("后一个>>");
    nextButton = next;
//  TODO Day04 7.a
    next.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        context.next(ExamFrame.this);
      }
    });
    p.add(next);
    JButton commit = new JButton("交卷");
    p.add(commit);
//  TODO Day04 8.a
    commit.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        context.commit(ExamFrame.this);
      }
    });
    return p;
  }
  private JPanel createQuestionPane() {
    JPanel p = new JPanel(new BorderLayout());
    p.add(BorderLayout.NORTH,
          createUserInfo());
    p.add(BorderLayout.CENTER,
        createQuestionText());
    p.add(BorderLayout.SOUTH,
        createOptionsPane());
    return p;
  }
 
  private JPanel createOptionsPane() {
    JPanel p = new JPanel(
        new FlowLayout(FlowLayout.CENTER,20,0));
    p.add(new Checkbox("A"));
    p.add(new Checkbox("B"));
    p.add(new Checkbox("C"));
    p.add(new Checkbox("D"));
    optionPane = p;
    return p;
  }
  private JScrollPane createQuestionText() {
    JScrollPane p = new JScrollPane();
    JTextPane txt = new JTextPane();
    txt.setText("进家门的第一件事情?\n"+
         "A.上厕所.\n" +
         "B.睡觉\n");
    p.getViewport().add(txt);
    txt.setEditable(false);
    this.questionTextPane = txt;
    return p;
  }
  private JLabel createUserInfo(){
    JLabel l = new JLabel();
    l.setText("姓名: 刘苍松  编号: 110  科目: 武林常识");
    l.setHorizontalAlignment(JLabel.CENTER);
    infolabel = l;
    return l;
  }
 
  private JLabel createTitle(){
    JLabel l = new JLabel();
    ImageIcon ico = new ImageIcon(
        getClass().getResource("exam_title.png"));
    l.setIcon(ico);
    l.setHorizontalAlignment(JLabel.CENTER);
    return l;
  }
 
  //TODO Day04 4.b.3
  //更新试题显示
  public void updateView(){
    //获得数据
    ExamInfo info = context.getExamInfo();
    infolabel.setText(info.toString());
    //TODO 更新界面还没有全部完成...
    updateQuestion();
    updateButtons();
    updateOptions();
    updateQuestionNumber();
  }
//TODO Day04 4.b.3
  private void updateQuestionNumber() {
    String txt = "题号:" +
      context.getExamInfo().getQuestionCount()+
      " 的 第"+(context.getQuestionInfo().getQuestionIndex()+1)
      + "题";
    this.numberlabel.setText(txt);
  }
//TODO Day04 4.b.3
  private void updateOptions() {
    List<Integer> userAanswer =
      context.getQuestionInfo().getUserAnswers();
    int size = context.getQuestionInfo()
      .getQuestion().getOptionNums();
    //清除所有选项
    optionPane.removeAll();
    //然后在重新添加新的
    for(int i=0; i<size; i++){
      //创建新选项
      OptionCheckBox opt = createOptionBox(i);
      optionPane.add(opt);
      optionList.add(opt);
    }
  }
//TODO Day04 4.b.3
  //创建一个选项
  public OptionCheckBox createOptionBox(
      int value){
    String[] str = "A,B,C,D,E,F,G,H,I".split(",");
    OptionCheckBox opt =
      new OptionCheckBox(value, str[value]);
    if(context.getQuestionInfo().getUserAnswers().contains(value)){
      opt.setSelected(true);
    }
    //处理选项单击事件, 将选项的结果更新到
    //ClientContext中
    opt.addItemListener(new ItemListener(){
      public void itemStateChanged(ItemEvent e) {
        //读取全部的选择结果
        List<Integer> ans = new ArrayList<Integer>();
        for(OptionCheckBox o:optionList){
          if(o.isSelected()){
            ans.add(o.value);
          }
        }
        //保存到ClientContext中
        context.answerChanged(ans);
      }
    });
    return opt;
  }
//TODO Day04 4.b.3
  private void updateButtons() {
    prevButton.setEnabled(true);
    nextButton.setEnabled(true);
    int idx = context.getQuestionInfo().getQuestionIndex();
    if(idx==0){
      prevButton.setEnabled(false);
    }
    if(idx == context.getExamInfo().getQuestionCount()-1){
      nextButton.setEnabled(false);
    }
  }
  //TODO Day04 4.b.3
  private void updateQuestion() {
    Question q =
      context.getQuestionInfo().getQuestion();
    questionTextPane.setText(q.toString());
  }
 //TODO Day04 4.b.3
  public class OptionCheckBox
    extends JCheckBox {
    int value;
    public OptionCheckBox(int value, String txt) {
      this.value = value;
      this.setText(txt);
    }
   
  }
}

package com.tarena.exam.client.gui;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.border.EmptyBorder;

public class LoginFrame extends BaseFrame {
  //TODO Day02 增加如下代码
  private ClientContext context;
  private JTextField userIdField;
  private JPasswordField userPwd;
 
  public LoginFrame() {
    init();//初始化界面
  }
  //TODO Day02 增加构造器
  /** 界面依赖于控制器提供的服务 */
  public LoginFrame(ClientContext context) {
    this();
    this.context = context;
  }
 
  /** 初始化界面 */
  private void init() {
    this.setSize(300, 200);
    setDefaultCloseOperation(
        DO_NOTHING_ON_CLOSE);
    setTitle("达内在线测评--登录");
    addWindowListener(new WindowAdapter(){
      public void windowClosing(WindowEvent e) {
        //TODO Day02 PM
//        int val =
//          JOptionPane.showConfirmDialog(
//              LoginFrame.this, "走呀!");
//        if(val==JOptionPane.YES_OPTION){
//          System.exit(0);//结束JVM
//        }
        context.exit(LoginFrame.this);
      }
    });
    setContentPane(createContentPane());
  }
  /** 创建内容面板 */
  private JPanel createContentPane(){
    JPanel p = new JPanel();
    p.setLayout(new BorderLayout());
    p.add(BorderLayout.SOUTH,
        createButtonPane());
    p.add(BorderLayout.NORTH,
        createUserPwdPane());
    return p;
  }
  /** 创建按钮面板 */
  private JPanel createButtonPane(){
    JPanel p = new JPanel();
    p.setLayout(new FlowLayout());
    JButton login = new JButton("登录");
    p.add(login);
   
    login.addActionListener(
        new ActionListener(){
          public void actionPerformed(
              ActionEvent e) {
     //在内部类中引用外部实例:LoginFrame.this
//          TODO Day02 增加如下代码
            String userId = userIdField.getText();//?
            String passwd = new String(userPwd.getPassword());//?
            context.login(
                LoginFrame.this,
                userId, passwd);
          }
        });
    //TODO Day02 PM
    //p.add(new JButton("取消"));
    JButton cancel = new JButton("取消");
    cancel.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        context.exit(LoginFrame.this);
      }
    });
    p.add(cancel);
    return p;
  }
 
  private JPanel createUserPwdPane(){
    JPanel p = new JPanel();
    p.setLayout(new GridLayout(3, 1, 0, 8));
    p.add(new JLabel("登录系统", JLabel.CENTER));
    p.add(createUserIdPane());
    p.add(createPwdPane());
    p.setBorder(new EmptyBorder(10,10,10,10));
    return p;
  }
  private JPanel createUserIdPane() {
    JPanel p = new JPanel();
    p.setLayout(new BorderLayout());
    p.add(BorderLayout.WEST,
        new JLabel("编号:"));
    //TODO Day02 修改了以下代码
//    p.add(BorderLayout.CENTER,
//        new JTextField());   
    userIdField = new JTextField();
    p.add(BorderLayout.CENTER,
            userIdField);
    return p;
  }
  private JPanel createPwdPane() {
    JPanel p = new JPanel();
    p.setLayout(new BorderLayout());
    p.add(BorderLayout.WEST,
        new JLabel("密码:"));
    //TODO Day02 修改
//    p.add(BorderLayout.CENTER,
//        new JPasswordField());
    this.userPwd = new JPasswordField();
    p.add(BorderLayout.CENTER,
        userPwd);   
    return p;
  }
}

package com.tarena.exam.client.gui;

import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.Menu;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.net.URL;

import javax.swing.AbstractButton;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;

import com.tarena.exam.entity.User;

public class MenuFrame extends BaseFrame {
  //TODO Day03 2.a
  private ClientContext context;
  //TODO Day05 3.c
  private JLabel userInfoLabel;
 
  public MenuFrame() {
    init();
  }
  //TODO Day03 2.a
  public MenuFrame(ClientContext context) {
    this();
    this.context = context;
  }
  private void init(){
    setSize(600, 400);
    setTitle("达内在线测评");
    setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
    addWindowListener(new WindowAdapter(){
      public void windowClosing(WindowEvent e) {
        context.exit(MenuFrame.this);
      }
    });
    setContentPane(createContentPane());
  }
  private JPanel createContentPane(){
    JPanel p = new JPanel(new BorderLayout());
    URL url = getClass().getResource(
        "title.png");
    ImageIcon ico = new ImageIcon(url);
    p.add(BorderLayout.NORTH,
        new JLabel(ico, JLabel.CENTER));
    p.add(BorderLayout.CENTER, createMenuPane());
    p.add(BorderLayout.SOUTH,
        new JLabel("版权所有, 盗版必杀! " +
            "达内科技 2010", JLabel.RIGHT));
    return p;
  }
 
  private JPanel createMenuPane(){
    JPanel p = new JPanel(new BorderLayout());
    userInfoLabel =
      new JLabel("欢迎: XXXX 同学", JLabel.CENTER);
    p.add(BorderLayout.NORTH,
        userInfoLabel);
    p.add(BorderLayout.CENTER,
        createBtnPane());
    return p;
  }
 
  private JPanel createBtnPane(){
    JPanel p =
      new JPanel(new FlowLayout());
    JButton start =
      createImgBtn("exam.png", "开始");
    //TODO Day04 3.a
    start.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        context.start(MenuFrame.this);
      }
    });
    p.add(start);
    JButton result =
      createImgBtn("result.png", "考试成绩");
    p.add(result);
    //Day05 4.a
    result.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        context.result(MenuFrame.this);
      }
    });
    JButton msg =
      createImgBtn("message.png", "考试规则");
    p.add(msg);
    JButton exit =
      createImgBtn("exit.png", "离开");
    exit.addActionListener(new ActionListener(){
      public void actionPerformed(ActionEvent e) {
        context.exit(MenuFrame.this);
      }
    });
    p.add(exit);
    return p;
  }
  private JButton createImgBtn(
      String img, String txt) {
    ImageIcon ico = new ImageIcon(
        getClass().getResource(img));
   
    JButton button = new JButton(txt, ico);
    button.setVerticalTextPosition(
        JButton.BOTTOM);
    button.setHorizontalTextPosition(
        JButton.CENTER);

    return button;
  }
  //TODO Day05 3.c
  public void updateView() {
    User u = context.getUser();
    userInfoLabel.setText(
        "欢迎:" + u.getName() + " 同学!");
  }
}

package com.tarena.exam.client.gui;

import java.awt.BorderLayout;
import java.awt.Color;

import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JWindow;
import javax.swing.border.LineBorder;

import com.tarena.util.GuiUtil;

public class WelcomeWindow
  extends JWindow {
  public WelcomeWindow() {
    init();
  }
  private void init(){
    setSize(430,300);
   
    JPanel p = new JPanel(new BorderLayout());
    JLabel l = new JLabel();
    p.add(BorderLayout.CENTER, l);
    setContentPane(p);
    p.setBorder(new LineBorder(Color.gray));
    ImageIcon ico = new ImageIcon(
        getClass().getResource("welcome.png"));
    l.setIcon(ico);
   
  }
  @Override
  public void setVisible(boolean b) {
    GuiUtil.centerWindow(this);
    super.setVisible(b);
  }
}