selectquestion.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.Component;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
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.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingConstants;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumnModel;

import com.exam.db.bean.Course;
import com.exam.db.bean.Question;
import com.exam.db.dao.CourseDao;
import com.exam.db.dao.QuestionDao;
import com.exam.ui.SuperFrame;

public class SelectQuestion extends SuperFrame {

	private static final long serialVersionUID = 1L;
	JTable tblQuestion;
	int num = 0;
	private JLabel lblPage;
	private int currentPage = 1;
	private int totalPage = 1;
	private JButton btnFirstPage;
	private JButton btnPreviousPage;
	private JButton btnNextPage;
	private JButton btnLastPage;
	private List<Question> list;

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

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

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

		JLabel lblQuestionCouID = new JLabel("选择要查询的科目考题：");
		lblQuestionCouID.setBounds(130, 20, 150, 20);
		pnlTotal.add(lblQuestionCouID);

		final JComboBox cboQuestionCouID = new JComboBox();
		cboQuestionCouID.addItem("");
		cboQuestionCouID.setBounds(280, 20, 180, 20);
		pnlTotal.add(cboQuestionCouID);

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

		JPanel pnlTop = new JPanel();
		pnlTop.setBounds(20, 50, 550, 340);
		pnlTop.setBorder(BorderFactory.createTitledBorder("考题信息"));
		pnlTotal.add(pnlTop);
		pnlTop.setLayout(null);

		Object[][] data = new String[10][7];
		Object[] columns = { "问题","题型", "答案A", "答案B", "答案C", "答案D", "正确答案" };
		tblQuestion = new JTable(data, columns) {
			private static final long serialVersionUID = 1L;
			public boolean isCellEditable(int row, int col) {
				return false;
			}
		};
		tblQuestion.setRowHeight(22);
		JTableHeader tbhQuestion = tblQuestion.getTableHeader();
		tbhQuestion.setBounds(10, 10, 500, 20);
		tblQuestion.setBounds(10, 35, 500, 220);
		tbhQuestion.setReorderingAllowed(false);
		tblQuestion.setSelectionMode(0);
		tblQuestion.setAutoResizeMode(0);

		JScrollPane scpQuetion = new JScrollPane(tblQuestion);
		scpQuetion.setBounds(25, 20, 500, 256);
		scpQuetion
				.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
		pnlTop.add(scpQuetion);

		TableColumnModel tcmQuestion = tblQuestion.getColumnModel();
		tcmQuestion.getColumn(0).setMinWidth(200);
		tcmQuestion.getColumn(1).setMinWidth(80);
		tcmQuestion.getColumn(2).setMinWidth(120);
		tcmQuestion.getColumn(3).setMinWidth(120);
		tcmQuestion.getColumn(4).setMinWidth(120);
		tcmQuestion.getColumn(5).setMinWidth(120);
		tcmQuestion.getColumn(6).setMinWidth(120);

		for (int i = 0; i < tblQuestion.getColumnCount(); i++) {
			tcmQuestion.getColumn(i).setResizable(false);
		}

		
		
		DefaultTableCellRenderer dtcrSchedule = new DefaultTableCellRenderer() {
			private static final long serialVersionUID = 1L;

			public Component getTableCellRendererComponent(JTable table,
					Object value, boolean isSelected, boolean hasFocus,
					int row, int column) {
				if (row % 2 != 0) {
					setBackground(new Color(206, 231, 255));
				} else {
					setBackground(new Color(255, 255, 255));
				}
				if(column==0){
					setHorizontalAlignment(SwingConstants.LEFT);
				}else{
					setHorizontalAlignment(SwingConstants.CENTER);
				}
				
				return super.getTableCellRendererComponent(table, value,
						isSelected, hasFocus, row, column);
			}
		};
		for (int i = 0; i < tblQuestion.getColumnCount(); i++) {
			tblQuestion.getColumn(columns[i]).setCellRenderer(dtcrSchedule);
		}

		lblPage = new JLabel("第 " + currentPage + " / " + totalPage + " 页");
		btnFirstPage = new JButton("第一页");
		btnPreviousPage = new JButton("上一页");
		btnNextPage = new JButton("下一页");
		btnLastPage = new JButton("最末页");

		lblPage.setBounds(50, 300, 80, 25);
		btnFirstPage.setBounds(140, 300, 60, 25);
		btnFirstPage.setMargin(new Insets(0, 0, 0, 0));
		btnPreviousPage.setBounds(230, 300, 60, 25);
		btnPreviousPage.setMargin(new Insets(0, 0, 0, 0));
		btnNextPage.setBounds(320, 300, 60, 25);
		btnNextPage.setMargin(new Insets(0, 0, 0, 0));
		btnLastPage.setBounds(410, 300, 60, 25);
		btnLastPage.setMargin(new Insets(0, 0, 0, 0));
		btnFirstPage.setEnabled(false);
		btnPreviousPage.setEnabled(false);
		btnNextPage.setEnabled(false);
		btnLastPage.setEnabled(false);
		pnlTop.add(lblPage);
		pnlTop.add(btnFirstPage);
		pnlTop.add(btnPreviousPage);
		pnlTop.add(btnNextPage);
		pnlTop.add(btnLastPage);

		cboQuestionCouID.addItemListener(new ItemListener() {
			public void itemStateChanged(ItemEvent arg0) {
				currentPage = 1;
				totalPage = 1;
				if (cboQuestionCouID.getSelectedIndex() == 0) {
					for (int i = 0; i < 10; i++) {
						for (int j = 0; j < 6; j++) {
							tblQuestion.setValueAt("", i, j);
						}
					}
					lblPage.setText("第 " + currentPage + " / " + totalPage
							+ " 页");
					if (currentPage == 1) {
						btnFirstPage.setEnabled(false);
						btnPreviousPage.setEnabled(false);
					} else {
						btnFirstPage.setEnabled(true);
						btnPreviousPage.setEnabled(true);
					}
					if (totalPage == currentPage) {
						btnNextPage.setEnabled(false);
						btnLastPage.setEnabled(false);
					} else {
						btnNextPage.setEnabled(true);
						btnLastPage.setEnabled(true);
					}
				} else {
					String str = cboQuestionCouID.getSelectedItem().toString();
					String couName = str.substring(3);
					String grade = str.substring(0, 2);
					CourseDao courseDao = new CourseDao();
					Course course = new Course();
					course = courseDao.selectCourseByNameAndGrade(couName,
							grade);
					QuestionDao quetionDao = new QuestionDao();
					list = new ArrayList<Question>();
					list = quetionDao.selectQuestionByCouID(course.getCouID());
					showTblQuestion();
				}
			}
		});
		btnFirstPage.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				currentPage = 1;
				showTblQuestion();
			}
		});
		btnPreviousPage.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				currentPage--;
				if (currentPage < 1) {
					currentPage = 1;
				}
				showTblQuestion();
			}
		});
		btnNextPage.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				currentPage++;
				if (currentPage == totalPage) {
					currentPage = totalPage;
				}
				showTblQuestion();
			}
		});
		btnLastPage.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				currentPage = totalPage;
				showTblQuestion();
			}
		});
	}

	private void showTblQuestion() {
		if (list.size() % 10 == 0) {
			if (list.size() == 0) {
				totalPage = 1;
			} else {
				totalPage = list.size() / 10;
			}
		} else {
			totalPage = list.size() / 10 + 1;
		}
		lblPage.setText("第 " + currentPage + " / " + totalPage + " 页");
		if (currentPage == 1) {
			btnFirstPage.setEnabled(false);
			btnPreviousPage.setEnabled(false);
		} else {
			btnFirstPage.setEnabled(true);
			btnPreviousPage.setEnabled(true);
		}
		if (totalPage == currentPage) {
			btnNextPage.setEnabled(false);
			btnLastPage.setEnabled(false);
		} else {
			btnNextPage.setEnabled(true);
			btnLastPage.setEnabled(true);
		}
		for (int i = 0; i < 10; i++) {
			for (int j = 0; j < 4; j++) {
				tblQuestion.setValueAt("", i, j);
			}
		}
		for (int i = 0; i < 10; i++) {
			for (int j = 0; j < 6; j++) {
				tblQuestion.setValueAt("", i, j);
			}
		}
		Question question = new Question();
		int first = (currentPage - 1) * 10;
		for (int i = first; i < list.size(); i++) {
			question = list.get(i);
			String[] answer = question.getAnswer().split("@@");
			tblQuestion.setValueAt(question.getQuestion(), i % 10, 0);
			if (question.getQueType().equals("选择题")) {
				tblQuestion.setValueAt("选择题", i % 10, 1);
				tblQuestion.setValueAt(answer[0], i % 10, 2);
				tblQuestion.setValueAt(answer[1], i % 10, 3);
				tblQuestion.setValueAt(answer[2], i % 10, 4);
				tblQuestion.setValueAt(answer[3], i % 10, 5);
			} else if (question.getQueType().equals("判断题")) {
				tblQuestion.setValueAt("判断题", i % 10, 1);
				tblQuestion.setValueAt(answer[0], i % 10, 2);
				tblQuestion.setValueAt(answer[1], i % 10, 3);
				tblQuestion.setValueAt("", i % 10, 4);
				tblQuestion.setValueAt("", i % 10, 5);
			} else if (question.getQueType().equals("填空题")) {
				tblQuestion.setValueAt("填空题", i % 10, 1);
				tblQuestion.setValueAt(answer[0], i % 10, 2);
				tblQuestion.setValueAt("", i % 10, 3);
				tblQuestion.setValueAt("", i % 10, 4);
				tblQuestion.setValueAt("", i % 10, 5);
			}
			tblQuestion.setValueAt(question.getRightAnswer(), i % 10, 6);
			if ((i % 10) == 9) {
				break;
			}
		}
	}
}