用java代碼如何實(shí)現(xiàn)監(jiān)聽登陸用戶的每個(gè)操作記錄

建立一個(gè)監(jiān)聽器，在Session里放一個(gè)List保存每個(gè)用戶的Session，這樣能看到服務(wù)器上有哪些用戶登陸了，以及他們的登錄信息。每個(gè)用戶的操作記錄，建議你用log4j記錄下就可以了，比方說，寫到一個(gè)文本里。

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求JAVA的監(jiān)聽5038端口的代碼。。。

服務(wù)端：

package com.socket;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java點(diǎn)虐 .ServerSocket;

import java點(diǎn)虐 .Socket;

public class Server {

public static void main(String[] args) throws IOException {

ServerSocket server = null;

Socket socket = null;

try {

server = new ServerSocket(5038);

while(true){

System.out.println("正在監(jiān)聽...");

if((socket = server.accept()) != null){

System.out.println("接收到一個(gè)請求"+ socket.getRemoteSocketAddress());

new Thread(new OperThread(socket)).start();

}

}

} catch (IOException e) {

System.out.println("waiting");

}

if(!socket.isConnected()){

socket.close();

server.close();

}

}

}

class OperThread implements Runnable{

Socket socket = null;

BufferedReader br = null;

public OperThread(Socket socket) throws IOException {

this.socket = socket;

br = new BufferedReader(new InputStreamReader(socket.getInputStream()));

}

@Override

public void run() {

try {

String s = null;

while( (s = br.readLine()) != null){

System.out.println(s);

}

} catch (IOException e) {

e.printStackTrace();

} finally{

try {

br.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

客戶端：

package com.socket;

import java.io.IOException;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java點(diǎn)虐 .Socket;

import java.util.Scanner;

public class Client {

public static void main(String[] args) throws IOException {

Socket socket = null;

PrintWriter pw = null;

Scanner scanner = new Scanner(System.in);

try {

socket = new Socket("127.0.0.1",5038);

pw = new PrintWriter(new OutputStreamWriter(socket.getOutputStream()));

String s = null;

while((s = scanner.nextLine()) != null){

pw.println(s);

pw.flush();

}

} catch (Exception e) {

System.out.println("\nconnect error");

}finally{

if(pw != null){

pw.close();

}

try {

if(socket != null){

socket.close();

}

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

先開服務(wù)端，再開客戶端。

求JAVA版QQ的按鈕監(jiān)聽，當(dāng)點(diǎn)擊登錄按鈕的時(shí)候關(guān)閉登陸窗口打開正在登陸窗口。并注釋原理。謝謝！

俺以前寫的...

public void actionPerformed(ActionEvent e) {

if(e.getSource()==jp2_bt2){//判斷按下了相應(yīng)按鈕。

if(!jp1_jtf.getText().trim().equals("")){//判斷用戶名和密碼是否為空

User u = new User();//創(chuàng)建登陸用戶向信息

u.setUid(jp1_jtf.getText().trim());

u.setUpd(new String(jp1_jpf.getPassword()).trim());

if(ClientBO.login(u)){//登陸并判斷是否成功

System.out.println("成功");

UserInfo uinfo = ClientBO.getUserInfo(u.getUid());//從服務(wù)器得到用戶信息

new Thread(new QQClientMain(uinfo)).start();//打開新窗口

this.dispose();//關(guān)閉登陸窗口

}else{

JOptionPane.showMessageDialog(this, "用戶名或密碼錯(cuò)誤");

}

}

}

}

在java中 上一個(gè) 按鈕監(jiān)聽代碼怎么寫

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.util.Random;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JTextField;

public class TestRandom extends JFrame {

JTextField field;

JButton randomButton;

RandomNumber t = new RandomNumber();

public TestRandom() {

field = new JTextField(15);

randomButton = new JButton("產(chǎn)生隨機(jī)數(shù)");

randomButton.addActionListener(new RandomListener());

this.getContentPane().setLayout(new FlowLayout());

this.getContentPane().add(field);

this.getContentPane().add(randomButton);

this.setSize(300,100);

this.addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

this.setVisible(true);

}

class RandomListener implements ActionListener {

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

String actionCommand = randomButton.getText();

if(actionCommand.equals("產(chǎn)生隨機(jī)數(shù)")) {

randomButton.setText("停止");

t.stop = false;

new Thread(t).start();

} else if(actionCommand.equals("停止")) {

randomButton.setText("產(chǎn)生隨機(jī)數(shù)");

t.stop = true;

}

}

}

class RandomNumber implements Runnable {

Random random;

StringBuffer num;

boolean stop = false;

public RandomNumber() {

random = new Random();

num = new StringBuffer("");

}

public void run() {

while(!stop) {

num.setLength(0);

for(int i=0;i6;i++) {

num.append(random.nextInt(9));

}

field.setText(num.toString());

try {

Thread.sleep(200);

} catch (InterruptedException e) {

e.printStackTrace();

}

}

}

}

public static void main(String[] args) {

new TestRandom();

}

}