studentframe.java

连接测试系统

package com.cnu.cie.olts.client.student;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

import javax.swing.ComboBoxModel;
import javax.swing.DefaultComboBoxModel;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFormattedTextField;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import javax.swing.JToolBar;

import javax.swing.WindowConstants;
import javax.swing.SwingUtilities;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.PlainDocument;

import com.cnu.cie.olts.client.AboutJPanel;
import com.cnu.cie.olts.client.BriefAnswerJPanel;
import com.cnu.cie.olts.client.FillBlankJPanel;
import com.cnu.cie.olts.client.ItemInfo;
import com.cnu.cie.olts.client.Login;
import com.cnu.cie.olts.client.TrueFalseJPanel;
import com.cnu.cie.olts.client.multipleChoiceJPanel;
import com.cnu.cie.olts.client.singleChoiceJPanel;



/**
* This code was edited or generated using CloudGarden's Jigloo
* SWT/Swing GUI Builder, which is free for non-commercial
* use. If Jigloo is being used commercially (ie, by a corporation,
* company or business for any purpose whatever) then you
* should purchase a license for each developer using Jigloo.
* Please visit www.cloudgarden.com for details.
* Use of Jigloo implies acceptance of these licensing terms.
* A COMMERCIAL LICENSE HAS NOT BEEN PURCHASED FOR
* THIS MACHINE, SO JIGLOO OR THIS CODE CANNOT BE USED
* LEGALLY FOR ANY CORPORATE OR COMMERCIAL PURPOSE.
*/
public class StudentFrame extends javax.swing.JFrame {
	private JMenuBar studentMenuBar;
	private JMenuItem reconnectMenuItem;
	private JMenuItem helpMenuItem;
	private JScrollPane jScrollPane1;
	private static JPanel mainPanel;
	private JPanel titlepanel;
	private static JPanel centerpanel;
	private JTextPane textpagepane;
	private JTextField difficulttfone;
	private JTextField difficulttftwo;
	private JButton submitbt;
	private JButton mybutton;
	private JComboBox subjectcombobox;
	private JButton reconnectButton;
	private JButton scoreAccountButton;
	private JButton starttestButton;
	private JToolBar studentToolBar;
	private JMenu aboutMenu;
	private JMenuItem exitMenuItem;
	private JMenuItem scoreAccountMenuItem;
	private JMenuItem starttestMenuItem;
	private JMenu jMenu1;
	
	
	 Socket socket;	
	 BufferedReader bufreader=null;
	 PrintWriter pswriter=null;
	 static ItemInfo[] iteminfo;
	 static int[] itemstate;
	 static int unfinishitem=0;
	 static int itemsnumber=0;
	 public static int testscore=0;
	/**
	* Auto-generated main method to display this JFrame
	*/
	 /*
	public static void main(String[] args) {
		SwingUtilities.invokeLater(new Runnable() {
			public void run() {
		//		StudentFrame inst = new StudentFrame();
		//		inst.setLocationRelativeTo(null);
		//		inst.setVisible(true);
			}
		});
	}
	*/
	public StudentFrame(Socket socket,BufferedReader bufreader,PrintWriter pswriter) {
		super();
		initGUI();
	//	Dimension screen=Toolkit.getDefaultToolkit().getScreenSize();
    //  setLocation(((screen.width-this.WIDTH)/2),((screen.height-this.HEIGHT)/2));
		this.socket=socket;
		this.bufreader=bufreader;
		this.pswriter=pswriter;
	}
	
	//实现关闭登录程序要进行的操作
	  protected void processWindowEvent(WindowEvent e)          
	 {
	    super.processWindowEvent(e);
	    if (e.getID() == WindowEvent.WINDOW_CLOSING) {	    	
			try {
				if(socket!=null&&!socket.isClosed()){
					socket.close();
					socket=null;
				}
				if(bufreader!=null)
					bufreader.close();
				if(pswriter!=null)
					pswriter.close();
			} catch (IOException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
			System.exit(0);
	    }
	  }
	  private void starttestButtonActionPerformed(ActionEvent evt) {
		  String info="SUBJECT:";
		  info=new String(info.getBytes());
		  pswriter.println(info);
		  pswriter.flush();
		  String returninfo = null;
		  try {
			returninfo=bufreader.readLine();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		if(returninfo==null){
			JOptionPane.showMessageDialog(null,"与服务器的连接已经中断，请重新连接","连接中断",JOptionPane.ERROR_MESSAGE);
			reconnectButton.setEnabled(true);
			reconnectMenuItem.setEnabled(true);
			return ;
		}
		  String[] subjects=returninfo.split("#_#");
		  subjectcombobox.removeAllItems();
		  subjectcombobox.addItem("全部");
		  if(subjects.length>0)
			  if("SUBJECT".equals(subjects[0]))
				  for(int i=1;i<subjects.length;i++)
					  subjectcombobox.addItem(subjects[i]);
		  submitbt.setEnabled(true);
		  mainPanel.removeAll();
		  mainPanel.setLayout(new BorderLayout());
		  mainPanel.add(titlepanel,BorderLayout.NORTH);
		  centerpanel.removeAll();
		  centerpanel.validate();
		  mainPanel.add(centerpanel,BorderLayout.CENTER);
		  mainPanel.validate();
		  mainPanel.repaint();
	  }
	  private void scoreAccountButtonActionPerformed(ActionEvent evt) {
		  JOptionPane.showMessageDialog(null,"你当前成绩："+testscore,"联机测试系统",JOptionPane.INFORMATION_MESSAGE);
		  System.out.println("你当前成绩："+testscore);
	  }
	  private void reconnectButtonActionPerformed(ActionEvent evt) {
		    String id=Login.id;
	  	  	String ps=Login.ps;
		  	String status=Login.status;
		  	String serverip=Login.serverip;
		  	int serverport=Login.serverport;		  	    
		  	try {
		  		if(socket!=null&&!socket.isClosed())
		  			socket.close();
		  		bufreader.close();
		  		pswriter.close();
		  		socket=new Socket(serverip,serverport);
		  		bufreader=new BufferedReader(new InputStreamReader(socket.getInputStream()));
				pswriter=new PrintWriter(socket.getOutputStream());
				
				String st="LOGIN:"+id+":"+ps+":"+status;   
				st=new String(st.getBytes());   
				pswriter.println(st);
				pswriter.flush();
				reconnectButton.setEnabled(false);
				reconnectMenuItem.setEnabled(false);
				new Thread(){public void run(){
					String loginfostring = "";
					try {
						loginfostring = bufreader.readLine();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						if(socket!=null&&!socket.isClosed())
							System.out.println(e.getMessage());
						reconnectButton.setEnabled(true);
						reconnectMenuItem.setEnabled(true);
					}
					if(loginfostring==null){
						JOptionPane.showMessageDialog(null,"网络不通或者服务器没开启服务","连接失败",JOptionPane.ERROR_MESSAGE);
						reconnectButton.setEnabled(true);
						reconnectMenuItem.setEnabled(true);
					}
					else if("LOGINSUCC".equals(loginfostring)){
						JOptionPane.showMessageDialog(null,"重新连接成功","连接成功",JOptionPane.INFORMATION_MESSAGE);
					}
					else if("ALREADYONLINE".equals(loginfostring)){
						JOptionPane.showMessageDialog(null,"你已经在线了，不能重复登录","登录失败",JOptionPane.ERROR_MESSAGE);
						reconnectButton.setEnabled(true);
						reconnectMenuItem.setEnabled(true);
					}
				}}.start();
				
		  	 } catch (Exception e1) {
					// TODO Auto-generated catch block
		  		 	JOptionPane.showMessageDialog(null,"网络连接失败，请检查网络设置以及目标主机服务是否启动","登录失败",JOptionPane.ERROR_MESSAGE);
		  		 	reconnectButton.setEnabled(true);
					reconnectMenuItem.setEnabled(true);
		  		 	if(socket!=null&&!socket.isClosed())
						try {
							socket.close();
						} catch (IOException e) {
							System.out.println(e.getMessage());
						}
		  		 	System.out.println(e1.getMessage());
		  	 		}
		
		        System.out.println("id--"+id);
		        System.out.println("ps--"+ps);
		        System.out.println("state--"+status);
		        System.out.println("ip--"+serverip);
		        System.out.println("port--"+serverport);
		        System.out.println("reconnect");
	  }
	private void exitMenuItemActionPerformed(ActionEvent evt) {
		try {
			if(socket!=null&&!socket.isClosed()){
				socket.close();
				socket=null;
			}
			if(bufreader!=null)
				bufreader.close();
			if(pswriter!=null)
				pswriter.close();
		} catch (IOException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}                                             
		System.exit(0);
	}
	//随即生成下一道题
	public static void NextItem()         
	{
	   if(unfinishitem>0){
		   //随即抽取未回答过的题目
		   int randomindex=0;
		   while(true){
			   randomindex=(int)(Math.random()*itemsnumber);
			   if((randomindex>=0)&&(randomindex<itemsnumber)&&(itemstate[randomindex]==1)){
				   itemstate[randomindex]=0;