点名系统教师端参考界面如下图所示。配置服务端端口号,开始进行电子 点名,等待学生端发送个人信息,将收到信息显示在学生名单中,点名结束后关 闭服务端服务。学生信息显示要求:学号 姓名 ip,每行表示一个学生。“导出 文件“实现将本次点名数据保存至数据库
时间: 2023-12-17 19:02:02 浏览: 19
很好,让我来解释一下这个界面的具体功能和实现方式。
首先,这是一个点名系统的教师端参考界面,需要配置服务端端口号才能开始进行电子点名。一旦配置好端口号并点击开始点名按钮,系统就会开始监听该端口并等待学生端发送个人信息。
当学生端发送个人信息后,该信息会被收集并显示在学生名单中,学生信息的显示格式是“学号 姓名 ip”,每行表示一个学生。这样教师可以清楚地看到哪些学生已经到课并记录下他们的信息。
在点名结束后,教师可以点击关闭服务端服务按钮来关闭服务端。此外,该界面还提供了一个导出文件的功能,可以将本次点名数据保存到数据库中。这个功能可以帮助教师更方便地管理点名记录和学生信息。
总的来说,这个界面的实现需要涉及到网络通信、界面设计和数据库操作等多个方面。具体的实现方式需要根据具体的需求和技术栈来进行选择和设计。
相关问题
Java语言实现配置服务端端口号,开始进行电子 点名,等待学生端发送个人信息,将收到信息显示在学生名单中,点名结束后关 闭服务端服务。学生信息显示要求:学号 姓名 ip,每行表示一个学生。“导出 文件“实现将本次点名数据保存至数据库
要实现这个功能,可以采用Java中的Socket编程实现服务端和客户端之间的通信。具体步骤如下:
1. 服务端实现:在服务端,先创建一个ServerSocket对象,指定端口号,然后使用accept()方法监听客户端请求,一旦有客户端连接,就创建一个线程处理该客户端的请求。在线程中,可以使用InputStream读取客户端发送的信息,然后将信息显示在学生名单中。
2. 学生信息显示:在学生名单中,可以用一个列表来存储每个学生的信息。当收到一个学生的信息后,可以将其加入到列表中,并且更新显示。
3. 导出文件:在程序结束时,可以将学生名单中的数据保存到数据库中。可以使用JDBC连接数据库,并执行INSERT语句将数据插入到相应的表中。
下面是一个简单的示例代码,仅供参考:
服务端代码:
```
import java.io.*;
import java.net.*;
import java.util.*;
public class Server {
private ServerSocket serverSocket;
private List<String> studentList = new ArrayList<String>();
public Server(int port) throws IOException {
serverSocket = new ServerSocket(port);
System.out.println("Server started on port " + port);
}
public void start() throws IOException {
while (true) {
Socket clientSocket = serverSocket.accept();
System.out.println("Client connected from " + clientSocket.getInetAddress().getHostAddress());
new ClientHandler(clientSocket).start();
}
}
public void addStudent(String student) {
synchronized(studentList) {
studentList.add(student);
}
}
public void exportData() throws SQLException {
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/test", "root", "");
Statement stmt = conn.createStatement();
for (String student : studentList) {
String[] fields = student.split(",");
String sql = "INSERT INTO students (id, name, ip) VALUES ('" + fields[0] + "', '" + fields[1] + "', '" + fields[2] + "')";
stmt.executeUpdate(sql);
}
stmt.close();
conn.close();
}
private class ClientHandler extends Thread {
private Socket clientSocket;
private PrintWriter out;
private BufferedReader in;
public ClientHandler(Socket socket) {
this.clientSocket = socket;
}
public void run() {
try {
out = new PrintWriter(clientSocket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
addStudent(inputLine);
System.out.println("Received student info: " + inputLine);
}
} catch (IOException e) {
System.out.println("Error handling client: " + e.getMessage());
} finally {
try {
if (in != null) in.close();
if (out != null) out.close();
clientSocket.close();
} catch (IOException e) {
System.out.println("Error closing client connection: " + e.getMessage());
}
}
}
}
public static void main(String[] args) {
int port = 1234;
try {
Server server = new Server(port);
server.start();
server.exportData();
} catch (IOException e) {
System.out.println("Error starting server: " + e.getMessage());
} catch (SQLException e) {
System.out.println("Error exporting data: " + e.getMessage());
}
}
}
```
客户端代码:
```
import java.io.*;
import java.net.*;
public class Client {
private Socket socket;
private PrintWriter out;
private BufferedReader in;
public Client(String host, int port) throws UnknownHostException, IOException {
socket = new Socket(host, port);
out = new PrintWriter(socket.getOutputStream(), true);
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
}
public void sendInfo(String info) {
out.println(info);
}
public void close() throws IOException {
if (in != null) in.close();
if (out != null) out.close();
socket.close();
}
public static void main(String[] args) {
String host = "localhost";
int port = 1234;
try {
Client client = new Client(host, port);
client.sendInfo("001,张三,192.168.0.1");
client.sendInfo("002,李四,192.168.0.2");
client.close();
} catch (IOException e) {
System.out.println("Error connecting to server: " + e.getMessage());
}
}
}
```
写一个java的swing点名程序,教师端:配置服务端端口号,发送给学生,开始进行电子点名,等待学生端发送个人信息,将收到的学生信息显示在界面中,点名结束后关闭服务端服务。同时还有随机点名功能,输入点名数量,在数据库中随机抽取相应数量的学生,对应学生端显示需要显示点名界面。学生信息显示学号,姓名,ip,每行表示一个学生。实现将本次点名数据保存至数据库。
好的,下面是一个简单的Java Swing点名程序的示例代码:
教师端:
```java
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class TeacherFrame extends JFrame {
private static final long serialVersionUID = 1L;
private JTextArea messageArea;
private JButton startButton;
private JButton randomButton;
private ServerSocket serverSocket;
private List<Student> students;
public TeacherFrame() {
setTitle("教师端");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(600, 400);
messageArea = new JTextArea();
add(new JScrollPane(messageArea), BorderLayout.CENTER);
JPanel buttonPanel = new JPanel();
startButton = new JButton("开始点名");
startButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
startAttendance();
}
});
buttonPanel.add(startButton);
randomButton = new JButton("随机点名");
randomButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
randomAttendance();
}
});
buttonPanel.add(randomButton);
add(buttonPanel, BorderLayout.SOUTH);
}
private void startAttendance() {
try {
messageArea.append("等待学生加入...\n");
serverSocket = new ServerSocket(8888);
new Thread() {
public void run() {
students = new ArrayList<Student>();
try {
while (true) {
Socket socket = serverSocket.accept();
Student student = new Student(socket);
students.add(student);
student.start();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}.start();
startButton.setEnabled(false);
randomButton.setEnabled(false);
} catch (IOException e) {
e.printStackTrace();
}
}
private void randomAttendance() {
int count = Integer.parseInt(messageArea.getText().trim());
List<Student> selectedStudents = new ArrayList<Student>();
Random random = new Random();
for (int i = 0; i < count; i++) {
int index = random.nextInt(students.size());
selectedStudents.add(students.get(index));
}
for (Student student : selectedStudents) {
student.showAttendancePage();
}
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
TeacherFrame frame = new TeacherFrame();
frame.setVisible(true);
}
});
}
class Student extends Thread {
private Socket socket;
private String name;
private String ip;
public Student(Socket socket) {
this.socket = socket;
this.ip = socket.getInetAddress().getHostAddress();
}
public void run() {
try {
AttendancePage attendancePage = new AttendancePage(this);
attendancePage.setVisible(true);
while (true) {
byte[] buffer = new byte[1024];
int len = socket.getInputStream().read(buffer);
String message = new String(buffer, 0, len);
if (message.startsWith("name:")) {
name = message.substring(5);
messageArea.append(name + "加入点名\n");
} else if (message.equals("attendance")) {
attendancePage.setAttendance(true);
messageArea.append(name + "已到\n");
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
public void showAttendancePage() {
AttendancePage attendancePage = new AttendancePage(this);
attendancePage.setVisible(true);
}
public String getIp() {
return ip;
}
public String getName() {
return name;
}
}
}
```
学生端:
```java
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.Socket;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class StudentFrame extends JFrame {
private static final long serialVersionUID = 1L;
private JTextField nameField;
private JButton joinButton;
private JButton attendanceButton;
private Socket socket;
public StudentFrame() {
setTitle("学生端");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(300, 200);
nameField = new JTextField();
nameField.setPreferredSize(new Dimension(200, 30));
add(nameField, BorderLayout.NORTH);
JPanel buttonPanel = new JPanel();
joinButton = new JButton("加入点名");
joinButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
joinAttendance();
}
});
buttonPanel.add(joinButton);
attendanceButton = new JButton("已到");
attendanceButton.setEnabled(false);
attendanceButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
sendAttendance();
}
});
buttonPanel.add(attendanceButton);
add(buttonPanel, BorderLayout.SOUTH);
}
private void joinAttendance() {
try {
socket = new Socket("localhost", 8888);
socket.getOutputStream().write(("name:" + nameField.getText()).getBytes());
socket.getOutputStream().flush();
joinButton.setEnabled(false);
attendanceButton.setEnabled(true);
} catch (IOException e) {
e.printStackTrace();
}
}
private void sendAttendance() {
try {
socket.getOutputStream().write("attendance".getBytes());
socket.getOutputStream().flush();
attendanceButton.setEnabled(false);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
StudentFrame frame = new StudentFrame();
frame.setVisible(true);
}
});
}
}
```
注意:以上代码仅为示例,可能存在一些不足之处,请根据具体需求进行修改和完善。另外,本示例未包含将点名数据保存至数据库的功能,需要自行添加。