基于Java的联机测试系统

package Controler.OnlienTest; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.Random; import javax.swing.*; import Class.Examation; import DataAcess.JoinDB; public class TestFrame extends BasicExamationFrame{ private JButton btnSubmit,btnNext,btnFinish; private JRadioButton rda,rdb,rdc,rdd; public ButtonGroup bgp1,bgp2; private JCheckBox cbYes,cbNo; private JTextField txt; private int RandomIndex; private ArrayList<Examation> listData ; private int TatalScore; private JComboBox DifficultySelecte; public void initComp() { this.setTitle("开始答题"); btnSubmit = new JButton("提交"); btnNext = new JButton("下一题"); btnFinish = new JButton("完成测试"); bgp2 = new ButtonGroup(); bgp1 = new ButtonGroup(); txt = new JTextField(); cbYes = new JCheckBox("是"); cbNo = new JCheckBox("否"); DifficultySelecte = new JComboBox(); DifficultySelecte.addItem("难度1"); DifficultySelecte.addItem("难度2"); DifficultySelecte.addItem("难度3"); DifficultySelecte.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub getDataFromDBByHard(); } }); this.add(DifficultySelecte); DifficultySelecte.setBounds(40, 130, 100, 20); bgp2.add(cbYes); bgp2.add(cbNo); this.add(cbNo); this.add(cbYes); cbYes.setBounds(200, 150, 40, 40); cbNo.setBounds(240, 150, 40, 40); rda = new JRadioButton("A"); rdb = new JRadioButton("B"); rdc = new JRadioButton("C"); rdd = new JRadioButton("D"); bgp1.add(rda); bgp1.add(rdb); bgp1.add(rdc); bgp1.add(rdd); this.add(rda); this.add(rdb); this.add(rdc); this.add(rdd); this.add(txt); txt.setBounds(280, 160, 60, 20); btnSubmit.setEnabled(false); rda.setBounds(40, 150, 40, 40); rdb.setBounds(80, 150, 40, 40); rdc.setBounds(120, 150, 40, 40); rdd.setBounds(160, 150, 40, 40); add(btnSubmit); add(btnNext); add(btnFinish); btnSubmit.setBounds(0, 200, 100, 20); btnNext.setBounds(100, 200, 100, 20); btnFinish.setBounds(200, 200, 100, 20); btnFinish.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub new JOptionPane().showMessageDialog(null, "你总得分："+TatalScore); } }); btnNext.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { // TODO Auto-generated method stub btnSubmit.setEnabled(true); Random rd = new Random(); int k = rd.nextInt(listData.size()); while(k>listData.size()||k<0) k = rd.nextInt(); RandomIndex = k; Examation data = listData.get(k); txtContent.setText("题目 "+data.getId()+":"+data.getContent()); switch(data.getType()) { case 1: getSelectFrame(); break; case 2: getCheckFrame(); break; case 3: getBlankFrame(); break; } btnNext.setEnabled(false); } }); btnSubmit.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent arg0) { // TODO Auto-generated method stub Examation data = listData.get(RandomIndex); // txtContent.setText(data.getContent()); switch(data.getType()) { case 1: if(getSelectString().equals("")) new JOptionPane().showMessageDialog(null, "请选择"); else { if(data.getAnswer().equals(getSelectString())) TatalScore+=data.getScore(); btnNext.setEnabled(true); btnSubmit.setEnabled(false); } break; case 2: if(getCheckString().equals("")) new JOptionPane().showMessageDialog(null, "请选择!"); else { if(data.getAnswer().equals(getCheckString())) TatalScore+=data.getScore(); btnNext.setEnabled(true); btnSubmit.setEnabled(false); } break; case 3: if(getBlankString().equals("")) new JOptionPane().showMessageDialog(null, "请填空!"); else { if(data.getAnswer().equals(getBlankString())) TatalScore+=data.getScore(); btnNext.setEnabled(true); btnSubmit.setEnabled(false); } break; } } }); } public String getSelectString() { String result=""; if(rda.isSelected()) result = "A"; else if(rdb.isSelected()) result = "B"; else if(rdc.isSelected()) result = "C"; else if(rdd.isSelected()) result ="D"; return result; } public String getCheckString() { String result = ""; if(cbYes.isSelected()) result = "是"; else if(cbNo.isSelected()) result = "否"; return result; } public String getBlankString() { String result; result = txt.getText(); return result; } public void getCheckFrame() { bgp1.clearSelection(); txt.setText(""); rda.setEnabled(false); rdb.setEnabled(false); rdc.setEnabled(false); rdd.setEnabled(false); txt.setEnabled(false); cbYes.setEnabled(true); cbNo.setEnabled(true); } public void getSelectFrame() { bgp2.clearSelection(); txt.setText(""); cbYes.setEnabled(false); cbNo.setEnabled(false); txt.setEnabled(false); rda.setEnabled(true); rdb.setEnabled(true); rdc.setEnabled(true); rdd.setEnabled(true); } public void getBlankFrame() { txt.setEnabled(true); rda.setEnabled(false); rdb.setEnabled(false); rdc.setEnabled(false); rdd.setEnabled(false); cbYes.setEnabled(false); cbNo.setEnabled(false); } public void getDataFromDB() { JoinDB.joinDB(); String sql = "select * from Examation"; JoinDB.query(sql); listData = new ArrayList<Examation>(); try{ if(JoinDB.rs == null) { new JOptionPane().showMessageDialog(this, "数据库已经没有试题!"); return ; } while(JoinDB.rs.next()) { Examation temp = new Examation(); temp.setId(Integer.parseInt(JoinDB.rs.getString(1))); temp.setDifficulty(JoinDB.rs.getString(2)); temp.setXTime(Integer.parseInt(JoinDB.rs.getString(3))); temp.setContent(JoinDB.rs.getString(4)); temp.setAnswer(JoinDB.rs.getString(5)); temp.setScore(Integer.parseInt(JoinDB.rs.getString(6))); temp.setType(Integer.parseInt(JoinDB.rs.getString(7))); listData.add(temp); } } catch(SQLException ex) { } } public void getDataFromDBByHard() { listData.clear(); int index = DifficultySelecte.getSelectedIndex()+1; System.out.println(index); String Sql = "select * from Examation where Difficulty='"+index+"'"; JoinDB.joinDB(); JoinDB.query(Sql); listData = new ArrayList<Examation>(); try{ if(JoinDB.rs == null) { new JOptionPane().showMessageDialog(this, "数据库已经没有试题!"); return ; } while(JoinDB.rs.next()) { Examation temp = new Examation(); temp.setId(Integer.parseInt(JoinDB.rs.getString(1))); temp.setDifficulty(JoinDB.rs.getString(2)); temp.setXTime(Integer.parseInt(JoinDB.rs.getString(3))); temp.setContent(JoinDB.rs.getString(4)); temp.setAnswer(JoinDB.rs.getString(5)); temp.setScore(Integer.parseInt(JoinDB.rs.getString(6))); temp.setType(Integer.parseInt(JoinDB.rs.getString(7))); listData.add(temp); } } catch(SQLException ex) { } } public TestFrame() { getDataFromDB(); initComp(); this.setSize(400, 300); this.setVisible(true); } }