selectpaper.java

accp s1毕业项目 考试管理系统

package com.exam.ui.teacher;

import java.awt.Color;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.List;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

import com.exam.db.bean.Course;
import com.exam.db.bean.ExamDB;
import com.exam.db.bean.Question;
import com.exam.db.bean.Student;
import com.exam.db.dao.CourseDao;
import com.exam.db.dao.ExamDBDao;
import com.exam.db.dao.QuestionDao;
import com.exam.db.dao.StudentDao;
import com.exam.ui.SuperFrame;

public class SelectPaper extends SuperFrame {
	private static final long serialVersionUID = 1L;
	private int current = 0;
	private int total = 19;
	private JTextArea txaQuestion;
	private JTextField txtAnswerA;
	private JTextField txtAnswerB;
	private JTextField txtAnswerC;
	private JTextField txtAnswerD;
	private JTextField txtRightAnswer;
	private JTextField txtStuAnswer;
	private JButton btnPrevious;
	private JButton btnNext;
	private JButton[] btnQuestion;
	private ExamDB examDB;
	private String[] queID;
	private String[] stuAnswer;

	public SelectPaper() {
		try {
			init();
			this.setVisible(true);
			this.setResizable(false);
			this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private void init() {
		this.setTitle("试卷");
		this.setSize(600, 450);
		this.setCenter();

		JPanel pnlTotal = new JPanel();
		this.getContentPane().add(pnlTotal);
		pnlTotal.setLayout(null);

		JLabel lblCouName = new JLabel("考试科目");
		lblCouName.setBounds(50, 20, 60, 25);
		pnlTotal.add(lblCouName);

		final JComboBox cboCouName = new JComboBox();
		cboCouName.setBounds(110, 20, 120, 25);
		cboCouName.addItem("");
		pnlTotal.add(cboCouName);

		List<Course> listCourse = new ArrayList<Course>();
		CourseDao courseDao = new CourseDao();
		listCourse = courseDao.selectAllCourse();
		for (int i = 0; i < listCourse.size(); i++) {
			cboCouName.addItem(listCourse.get(i).getGrade() + "-"
					+ listCourse.get(i).getCouName());
		}

		JLabel lblStuID = new JLabel("学生学号");
		lblStuID.setBounds(250, 20, 60, 25);
		pnlTotal.add(lblStuID);

		final JComboBox cboStuID = new JComboBox();
		cboStuID.setBounds(310, 20, 120, 25);
		cboStuID.setEditable(true);
		cboStuID.addItem("");
		pnlTotal.add(cboStuID);

		List<Student> listStudent = new ArrayList<Student>();
		StudentDao studentDao = new StudentDao();
		listStudent = studentDao.selectAllStudent();
		for (Student student : listStudent) {
			cboStuID.addItem(student.getStuID());
		}

		JButton btnFind = new JButton("查找");
		btnFind.setBounds(480, 20, 60, 25);
		btnFind.setMargin(new Insets(0, 0, 0, 0));
		pnlTotal.add(btnFind);

		JPanel pnlInfo = new JPanel();
		pnlInfo.setBounds(30, 50, 530, 350);
		pnlInfo.setBorder(BorderFactory.createTitledBorder("试卷"));
		pnlTotal.add(pnlInfo);
		pnlInfo.setLayout(null);

		txaQuestion = new JTextArea();
		txaQuestion.setLineWrap(true);
		txaQuestion.setEditable(false);
		txaQuestion.setForeground(Color.black);
		JScrollPane scpQuestion = new JScrollPane(txaQuestion);
		scpQuestion.setBounds(20, 30, 490, 60);
		pnlInfo.add(scpQuestion);

		JRadioButton radAnswerA = new JRadioButton("A");
		radAnswerA.setBounds(30, 100, 40, 25);
		radAnswerA.setEnabled(false);
		pnlInfo.add(radAnswerA);

		txtAnswerA = new JTextField();
		txtAnswerA.setBounds(80, 100, 428, 25);
		txtAnswerA.setEditable(false);
		pnlInfo.add(txtAnswerA);

		JRadioButton radAnswerB = new JRadioButton("B");
		radAnswerB.setBounds(30, 130, 40, 25);
		radAnswerB.setEnabled(false);
		pnlInfo.add(radAnswerB);

		txtAnswerB = new JTextField();
		txtAnswerB.setBounds(80, 130, 428, 25);
		txtAnswerB.setEditable(false);
		pnlInfo.add(txtAnswerB);

		JRadioButton radAnswerC = new JRadioButton("C");
		radAnswerC.setBounds(30, 160, 40, 25);
		radAnswerC.setEnabled(false);
		pnlInfo.add(radAnswerC);

		txtAnswerC = new JTextField();
		txtAnswerC.setBounds(80, 160, 428, 25);
		txtAnswerC.setEditable(false);
		pnlInfo.add(txtAnswerC);

		JRadioButton radAnswerD = new JRadioButton("D");
		radAnswerD.setBounds(30, 190, 40, 25);
		radAnswerD.setEnabled(false);
		pnlInfo.add(radAnswerD);

		txtAnswerD = new JTextField();
		txtAnswerD.setBounds(80, 190, 428, 25);
		txtAnswerD.setEditable(false);
		pnlInfo.add(txtAnswerD);

		JLabel lblStuAnswer = new JLabel("学生答案");
		lblStuAnswer.setBounds(20, 220, 60, 25);
		pnlInfo.add(lblStuAnswer);

		txtStuAnswer = new JTextField();
		txtStuAnswer.setBounds(80, 220, 300, 25);
		txtStuAnswer.setEditable(false);
		pnlInfo.add(txtStuAnswer);

		JLabel lblRightAnswer = new JLabel("正确答案");
		lblRightAnswer.setBounds(20, 250, 60, 25);
		pnlInfo.add(lblRightAnswer);

		txtRightAnswer = new JTextField();
		txtRightAnswer.setBounds(80, 250, 300, 25);
		txtRightAnswer.setEditable(false);
		pnlInfo.add(txtRightAnswer);

		btnPrevious = new JButton("上一题");
		btnNext = new JButton("下一题");
		btnPrevious.setMargin(new Insets(0, 0, 0, 0));
		btnNext.setMargin(new Insets(0, 0, 0, 0));
		btnPrevious.setBounds(420, 220, 60, 25);
		btnNext.setBounds(420, 250, 60, 25);
		btnPrevious.setEnabled(false);
		btnNext.setEnabled(false);
		pnlInfo.add(btnPrevious);
		pnlInfo.add(btnNext);

		JPanel pnlButton = new JPanel();
		pnlButton.setBounds(70, 290, 400, 50);
		pnlInfo.add(pnlButton);
		pnlButton.setLayout(new GridLayout(2, 10, 1, 1));

		btnQuestion = new JButton[20];
		for (int i = 0; i < btnQuestion.length; i++) {
			btnQuestion[i] = new JButton(i + 1 + "");
			btnQuestion[i].setMargin(new Insets(0, 0, 0, 0));
			btnQuestion[i].setEnabled(false);
			pnlButton.add(btnQuestion[i]);
			final int num = i;
			btnQuestion[i].addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent arg0) {
					current = num;
					showQuestion(num);
				}
			});
		}

		btnFind.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				if (cboCouName.getSelectedIndex() == 0) {
					JOptionPane.showMessageDialog(null, "请选择科目！");
					return;
				}
				if (cboStuID.getSelectedItem().toString().equals("")) {
					JOptionPane.showMessageDialog(null, "请选择学号！");
					return;
				}
				CourseDao courseDao = new CourseDao();
				String str = cboCouName.getSelectedItem().toString().trim();
				String couName = str.substring(3);
				String grade = str.substring(0, 2);
				Course course = courseDao.selectCourseByNameAndGrade(couName,
						grade);
				int couID = course.getCouID();
				String stuID = cboStuID.getSelectedItem().toString().trim();
				boolean result = getPaper(stuID, couID);
				if (result) {
				} else {
					return;
				}
				current = 0;
				showQuestion(current);
			}
		});
		btnPrevious.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				current--;
				showQuestion(current);
			}
		});
		btnNext.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				current++;
				showQuestion(current);
			}
		});
	}

	private boolean getPaper(String stuID, int couID) {
		ExamDBDao examDBDao = new ExamDBDao();
		List<ExamDB> list = examDBDao.selectExamDBByStuIDAndCouID(stuID, couID);
		if (list.size() == 0) {
			JOptionPane.showMessageDialog(null, "该学生没有进行此科目的考试");
			return false;
		} else {
			JOptionPane.showMessageDialog(null, "该学生该科目考了" + list.size()
					+ "次!\n将显示最后一次考试试卷！");
			examDB = list.get(0);
			for (int i = 0; i < btnQuestion.length; i++) {
				btnQuestion[i].setEnabled(true);
			}
			btnPrevious.setEnabled(true);
			btnNext.setEnabled(true);
			queID = examDB.getQuestion().split("@@");
			stuAnswer = examDB.getAnswer().split("@@");
		}
		return true;
	}

	private void showQuestion(int num) {
		showCurrentQuestion();
		QuestionDao questionDao = new QuestionDao();
		Question question = new Question();
		question = questionDao.selectQuestionByQueID(Integer
				.parseInt(queID[current]));
		txaQuestion.setText(question.getQuestion());
		String[] radAnswer = question.getAnswer().split("@@");
		if (question.getQueType().equals("选择题")) {
			txtAnswerA.setText(radAnswer[0]);
			txtAnswerB.setText(radAnswer[1]);
			txtAnswerC.setText(radAnswer[2]);
			txtAnswerD.setText(radAnswer[3]);
		} else if (question.getQueType().equals("判断题")) {
			txtAnswerA.setText(radAnswer[0]);
			txtAnswerB.setText(radAnswer[1]);
			txtAnswerC.setText("");
			txtAnswerD.setText("");
		} else if (question.getQueType().equals("填空题")) {
			txtAnswerA.setText("");
			txtAnswerB.setText("");
			txtAnswerC.setText("");
			txtAnswerD.setText("");
		}
		txtStuAnswer.setText(stuAnswer[current]);
		txtRightAnswer.setText(question.getRightAnswer());
	}

	private void showCurrentQuestion() {
		if (current == 0) {
			btnPrevious.setEnabled(false);
		} else {
			btnPrevious.setEnabled(true);
		}
		if (current == total) {
			btnNext.setEnabled(false);
		} else {
			btnNext.setEnabled(true);
		}
		for (int i = 0; i < btnQuestion.length; i++) {
			if (i == current) {
				btnQuestion[i].setBackground(Color.red);
			} else {
				btnQuestion[i].setBackground(null);
			}
		}
	}

}