📄 web158_com.java
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in = new DataInputStream(new FileInputStream(file));
out = new DataOutputStream(clientSocket.getOutputStream());
while ((length = in.read(buffer)) != -1) {
out.write(buffer, 0, length);
}
out.flush();
in.close();
out.close();
System.out.println("文件发送完毕！");
clientSocket.close();
// return true;
} catch (Exception e) {
// TODO: handle exception
System.out.println("错误：服务器没开启" + e);
//return false;
}//处理其它不可想问题
}
//把考生的选择题题目写出
public String getChoose()
{
String driver="sun.jdbc.odbc.JdbcOdbcDriver";
String dbUrl="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};DBQ=web158_exam/exam.dll";
Statement stmt=null;
Connection conn=null;
//需要返回的记录集
String returnStr="以下为考生"+stuname+"（"+stuid+"）的试卷备份"+System.getProperty("line.separator")+System.getProperty("line.separator");
//加载驱动
//**************************
try
{
Class.forName(driver);
}
catch(java.lang.ClassNotFoundException nofound)
{
JOptionPane.showMessageDialog(null, "读取试卷时数据驱动错误");
System.err.println(nofound.getMessage());
return "error" ;
}
//开始添加试题
//**********************************
try{
conn=DriverManager.getConnection(dbUrl,"web158.com","web158.com");
stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select * from exam");
int rnum=0;
String ok="";
String s=System.getProperty("line.separator");
while(rs.next())
{
String t=rs.getString("answer");
String c=rs.getString("stuanswer");
if(t.equals(c))
{
rnum++;
ok="正确";
}
else
{
ok="错误";
}
returnStr+="第"+rs.getInt("id")+"题："+s+s;
returnStr+=" "+rs.getString("question")+s+s;
returnStr+=" A："+rs.getString("a")+s+s;
returnStr+=" B："+rs.getString("b")+s+s;
returnStr+=" C："+rs.getString("c")+s+s;
returnStr+=" D："+rs.getString("d")+s+s;
returnStr+=" 正确答案："+t+" 考生所选答案："+c+" "+ok+s+s;
}
//操作题
rs=stmt.executeQuery("select * from operate");
//添加操作标题
returnStr+=s+s+s+"以下为操作题,考生操作题答案在同文件夹中的answer.rar中："+s+s+s;
while(rs.next())
{
String t=rs.getString("id");
String c=rs.getString("question");
returnStr+="第"+t+"题："+s+s+" "+c+s+s;
}
//选择题正确
returnStr+=s+s+"选择题正确题数："+rnum+" 得分："+rnum*prechoose+s+s+s;
//把全局分数付值
score=rnum*prechoose;
//关闭连接
stmt.close();
conn.close();
return returnStr;
}//end of try
catch(Exception ef)
{
JOptionPane.showMessageDialog(null, "考试交卷初始化选择题失败");
System.out.println(ef.getMessage());
return "error";
}
finally
{
try
{
stmt.close();
conn.close();
}catch(Exception ef)
{}
}
}
//删除残余文件
public void delExt()
{
try
{
File file;
//先删除D盘中的系统文件
deletefile("D:/myexam");
//删除考生相关文件
file=new File("web158_exam/exam.dll");
if(file.exists())
{
file.delete();
}
file=new File("web158_exam/answer.dll");
if(file.exists())
{
file.delete();
}
}
catch(Exception ef)
{
System.out.print(ef.getMessage());
}
}
//删除文件夹
public void deletefile(String delpath) throws FileNotFoundException,IOException
{
try
{
File file = new File(delpath);
if (!file.isDirectory())
{
file.delete();
}
else if (file.isDirectory())
{
String[] filelist = file.list();
for(int i = 0;i<filelist.length; i++)
{
File delfile = new File(delpath + "\\" + filelist[i]);
if (!delfile.isDirectory())
delfile.delete();
else if (delfile.isDirectory())
deletefile(delpath+"\\"+filelist[i]);
}
file.delete();
}
}
catch (FileNotFoundException e)
{ }
}
//启动服务器线程
public String startClient(String ip,int port,String name,String id,int receiveport)
{
String str="";
try
{
System.out.println("正在与服务器建立连接...");
socket = new Socket(ip,port); //建立和ServerSocket的连接
System.out.println("连接已经建立");
out = new PrintWriter(socket.getOutputStream(),true);
//向服务器发送姓名,考号,命令
out.println(name+"#"+id+"#"+"web158");
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
System.out.println(in.readLine()); //按行输入
String order=in.readLine();
//服务器响应接收传来的文件
if(order.equals("noexit"))
{
JOptionPane.showMessageDialog(null, "您的考生信息不存在");
return "您的考生信息不存在";
}
//已经取过试题
else if(order.equals("examed"))
{
JOptionPane.showMessageDialog(null, "您的试题已经取过,请联系监考人员...");
return "你已经参加过考试";
}
//服务器出错
else if(order.equals("error"))
{
System.out.println("数据库出错");
JOptionPane.showMessageDialog(null, "服务器处理数据失败,请联系监考人员...");
return "服务器处理数据失败,请联系监考人员...";
}
//服务器生成试卷失败
else if(order.equals("cerror"))
{
JOptionPane.showMessageDialog(null, "服务器生成随机试卷时失败,请联系监考人员...");
return "服务器生成随机试卷时失败,请联系监考人员...";
}
//服务器关闭
else if(order.equals("closeed"))
{
JOptionPane.showMessageDialog(null, "服务器已经关闭");
return "服务器已经关闭";
}
//服务器回复正在回发试题
else if(order.equals("web158"))
{
try
{
qpanel.top_info_text.setText("正在接收试卷...");
Thread.sleep(500);
clientReceive(ip,receiveport,"","","web158_exam/exam.dll");
qpanel.top_info_text.setText("正在接收考生身份信息...");
//接收图片数据
Thread.sleep(500);
clientReceive(ip,receiveport,"","","web158_com_skin/"+id+".dll");
System.out.print("文件接收成功");
str="文件接收成功";
}
catch(Exception ef)
{
System.out.print(ef.getMessage());
str="接收试题失败,请重试...";
}
}
//处理其它不可想情况
else if(order.equals("othererror"))
{
JOptionPane.showMessageDialog(null, "服务器出现未知错误");
return "服务器出现未知错误";
}
out.close();
in.close();
socket.close();
str="试题提取成功";
return str;
}
catch(IOException e)
{
System.out.println("服务器没有开启"+e.getMessage()+ip+":"+port);
return "提取试题失败,与服务器:"+ip+":"+port+"建立连接失败...";
//return e.getMessage();
}
finally
{
try
{
socket.close();
out.close();
in.close();
}
catch(Exception ef)
{}
}
}
//接收文件
public boolean clientReceive(String ip,int port,String name,String id,String filename){
try{
Socket clientSocket = new Socket(ip, port);
DataInputStream in = new DataInputStream(clientSocket.getInputStream());
File file = new File(filename);
byte[] buffer = new byte[1024];
int length = 0;
if(!file.exists())
file.createNewFile();
FileOutputStream fileOut = new FileOutputStream(file);
while((length=in.read(buffer))!= -1){
fileOut.write(buffer, 0, length);
}
fileOut.close();
clientSocket.close();
return true;
}catch (Exception e) {
// TODO: handle exception
System.out.println("总出错,老子火了 ：" +e.getMessage());
return false;
}
}
//
void web158_info()
{
// 取试题退出按钮事件
qpanel.top_button_cancle.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
closetimer.start();
}
});
//取试题确定按钮事件
qpanel.top_button_ok.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
// 显示处理中
qpanel.top_info_text.setText("系统处理中...");
String host=qpanel.top_host_input.getText();
int port=8888;
try
{
port=Integer.parseInt(qpanel.top_port_input.getText());
if(port<1000)
{
JOptionPane.showMessageDialog(null, "请输入数字类型端口号");
qpanel.top_info_text.setText("端口号填写不正确");
return;
}
}
catch(Exception ef)
{
JOptionPane.showMessageDialog(null, "请输入数字类型端口号");
qpanel.top_info_text.setText("端口号填写不正确");
return;
}
//考生姓名考证号
String name=qpanel.top_name_input.getText();
//考生号码
String id=qpanel.top_id_input.getText();
//输入姓名和考号有注入信息
if(name.indexOf("#")!=-1||name.indexOf("'")!=-1||id.indexOf("#")!=-1||id.indexOf("'")!=-1)
{
JOptionPane.showMessageDialog(null, "姓名和考号中请不要输入“'”或“#”");
qpanel.top_info_text.setText("姓名和考号中请不要输入“'”或“#”");
return;
}
//clientReceive(host,port,name,id);
//启动服务器
//是否初始化试题
String str=startClient(host,port,name,id,receiveport);
System.out.println(str);
if(str.equals("试题提取成功"))
{
//把全局变量付值////////////////////////////////////////////////
serverip=host;
sendport=port;
stuname=name;
stuid=id;
//初始化按钮////////////////////////////////////////////////////
qpanel.top_info_text.setText("试题领取成功,点击确定开始答题");
//添加新事件
qpanel.top_begin.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
txtinfo.setText("注意：\n现在答的是第一大题：选择题\n请从A、B、C、D四个选项中选择出正确答案，点击上一题，下一题进行更改和答题");
//试题面板
getExamPanel();
//计时
timer.start();
return;
}
});//end of actionPerformed
qpanel.top_begin.setVisible(true);
qpanel.top_button_ok.setVisible(false);
qpanel.top_button_cancle.setVisible(false);
//更新考生信息
//头象
headpic.setPicurl(id+".dll",name);
headpic.setPreferredSize(new Dimension(120,150));
pic_panel.removeAll();
pic_panel.add(headpic);
pic_panel.repaint();
pic_panel.validate();
//姓名
web158_stu_name.setText("考生姓名："+name);
//全局变量付值
//准考证号
web158_stu_id.setText("准考证号："+id);
//把四个表彰不可用
qpanel.top_id_input.setEnabled(false);
qpanel.top_name_input.setEnabled(false);
qpanel.top_host_input.setEnabled(false);
qpanel.top_port_input.setEnabled(false);
//写出考试说明
txtinfo.setText("考生"+name+"：\n\n请注意：\n试题已经发下!\n请点击开始答题进行答题！\n有不明白的问题请联系监考人员");
//返回
return ;
}//取试题失败
else
{
//qpanel.top_info_text.setText("试题领取失败,与服务器 "+host+":"+port+" 建立连接失败,请重试...");
qpanel.top_info_text.setText(str);
return ;
}
}
});
//以下更新信息
web158_com_Cpanel.removeAll();
web158_com_Cpanel.add(qpanel);
web158_com_Cpanel.repaint();
web158_com_Cpanel.validate();
//m=m-1;
//timer.start();
}//end of web158_info
}//end of web158_frame
/********************************************************
* *
* 程序入口 *
* *
*********************************************************/
public class Web158_Com {
//点位
static Point origin = new Point();
//主入口
public static void main(String[] args) {
/*
//以下设置考生考试时不得做其它操作
Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize(); //得到用户屏幕大小
JFrame f=new JFrame();
f.setSize(screenSize.width,screenSize.height);
f.setUndecorated(true);
f.setVisible(true);
*/
//创建窗口对象
final web158_frame frame=new web158_frame();
//添加窗口移动事件
frame.addMouseListener (new MouseAdapter() {
public void mousePressed(MouseEvent e) {
origin.x = e.getX();origin.y = e.getY();
}
});//end of frame.addMouseListener ()
//可以拖动
frame.addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {
Point p = frame.getLocation();
frame.setLocation(p.x + e.getX() - origin.x, p.y + e.getY() - origin.y );
}
});//end of frame.addMouseMotionListener()
//添加最小化按钮
frame.web158_com_system.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e)
{
frame.setExtendedState(Frame.ICONIFIED|frame.getExtendedState());
}
});
//窗口移动事件完毕
}
}
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