java在线聊天项目1.1版 ——开启多个客户端，分别实现注册和登录功能，使用客户端与服务端信息request机制，重构线程，将单独的登录和注册线程合并

package com.swift.frame;import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ConnectException;
import java.net.Socket;import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.TitledBorder;import com.google.gson.Gson;
import com.swift.util.Center;public class LoginDialog extends JDialog { private JPasswordField passwordField_2;
private JPasswordField passwordField_1;
private JTextField textField_2;
private JTextField textField;
String request = null;
String response = null; Socket s;
DataOutputStream dos;
DataInputStream dis; public static void main(String args[]) {
JFrame.setDefaultLookAndFeelDecorated(true);
JDialog.setDefaultLookAndFeelDecorated(true); try {
UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
} catch (ClassNotFoundException e1) {
e1.printStackTrace();
} catch (InstantiationException e1) {
e1.printStackTrace();
} catch (IllegalAccessException e1) {
e1.printStackTrace();
} catch (UnsupportedLookAndFeelException e1) {
e1.printStackTrace();
} EventQueue.invokeLater(new Runnable() {
public void run() {
try {
LoginDialog dialog = new LoginDialog();
dialog.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
dialog.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
} public LoginDialog() {
super();
setResizable(false);
setTitle("在线聊天登录框");
getContentPane().setLayout(null);
setBounds(100, 100, 427, 301);// 注册时高度为578，不注册是301 // 设置窗口居中
this.setLocation(Center.getPoint(this.getSize())); final JTextField textField_1 = new JTextField();
textField_1.setBounds(148, 90, 192, 42);
getContentPane().add(textField_1); final JLabel label = new JLabel();
label.setText("帐 号");
label.setBounds(76, 102, 66, 18);
getContentPane().add(label); final JLabel label_1 = new JLabel();
label_1.setText("密 码");
label_1.setBounds(76, 167, 66, 18);
getContentPane().add(label_1); final JPasswordField passwordField = new JPasswordField();
passwordField.setBounds(148, 155, 192, 42);
getContentPane().add(passwordField); final JButton button_1 = new JButton();
button_1.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) { String phone = new String(textField_1.getText()).trim();
String password = new String(passwordField.getPassword()).trim();
if (!phone.equals("") && !password.equals("")) {
try {
request = "login";
dos.writeUTF(request);
response = dis.readUTF();
if (response.equals("login")) {
dos.writeUTF(phone);
dos.writeUTF(password);
String flag=dis.readUTF();
if(flag.equals("success")) {
javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "登录成功");
}else if(flag.equals("fail")) {
javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "登录失败");
}
}
} catch (IOException e1) {
e1.printStackTrace();
}
} else {
javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "用户名密码必须填写...");
return;
}
}
});
button_1.setText("登录");
button_1.setBounds(230, 222, 106, 36);
getContentPane().add(button_1); final JButton button = new JButton();
button.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) {
if (LoginDialog.this.getHeight() == 301) {
LoginDialog.this.setSize(427, 578);
} else {
LoginDialog.this.setSize(427, 301);
}
// 设置窗口不断居中
LoginDialog.this.setLocation(Center.getPoint(LoginDialog.this.getSize()));
}
});
button.setText("注册");
button.setBounds(76, 222, 106, 36);
getContentPane().add(button); final JPanel panel = new JPanel();
panel.setLayout(null);
panel.setBorder(new TitledBorder(null, "注册用户", TitledBorder.DEFAULT_JUSTIFICATION,
TitledBorder.DEFAULT_POSITION, null, null));
panel.setBounds(10, 278, 401, 226);
getContentPane().add(panel); final JLabel label_2 = new JLabel();
label_2.setBounds(44, 41, 65, 18);
label_2.setText("手机号：");
panel.add(label_2); textField = new JTextField();
textField.setBounds(115, 35, 225, 30);
panel.add(textField); final JButton button_2 = new JButton();
button_2.setText("发送验证");
button_2.setBounds(243, 75, 97, 30);
panel.add(button_2); textField_2 = new JTextField();
textField_2.setBounds(115, 104, 95, 30);
panel.add(textField_2); final JLabel label_3 = new JLabel();
label_3.setText("验证码：");
label_3.setBounds(44, 110, 65, 18);
panel.add(label_3); passwordField_1 = new JPasswordField();
passwordField_1.setBounds(115, 143, 231, 30);
panel.add(passwordField_1); passwordField_2 = new JPasswordField();
passwordField_2.setBounds(115, 175, 231, 30);
panel.add(passwordField_2); final JLabel label_4 = new JLabel();
label_4.setText("密 码：");
label_4.setBounds(44, 149, 65, 18);
panel.add(label_4); final JLabel label_5 = new JLabel();
label_5.setText("验证密码：");
label_5.setBounds(44, 181, 65, 18);
panel.add(label_5); final JButton button_3 = new JButton();
button_3.setBounds(47, 510, 97, 30);
getContentPane().add(button_3);
button_3.setText("放弃"); final JButton button_4 = new JButton();
button_4.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) { String phone = textField.getText();
String password = null;
String str1 = new String(passwordField_1.getPassword()).trim();
String str2 = new String(passwordField_2.getPassword()).trim();
if (!phone.equals("") && !str1.equals("") && !str2.equals("")) {
if (str1.equals(str2)) {
password = new String(passwordField_2.getPassword()).trim();
try {
request = "reg";
dos.writeUTF(request);
String response = dis.readUTF();
if (response.equals("reg")) {
dos.writeUTF(phone);
dos.writeUTF(password);
}
javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "注册成功...");
} catch (IOException e1) {
e1.printStackTrace();
}
} else {
javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "输入密码不一致...");
System.out.println("输入密码不一致...");
passwordField_1.setText("");
passwordField_2.setText("");
} } else {
javax.swing.JOptionPane.showMessageDialog(LoginDialog.this, "用户名密码必须填写...");
return;
}
}
}); button_4.setBounds(262, 510, 97, 30);
getContentPane().add(button_4);
button_4.setText("注册用户"); connect();
this.addWindowListener(new WindowAdapter() {
@Override
public void windowClosed(WindowEvent e) {
disconnect();
}
});
} public void connect() {
try {
s = new Socket("127.0.0.1", 8888);
System.out.println("一个客户端登陆中....!");
dos = new DataOutputStream(s.getOutputStream());
dis = new DataInputStream(s.getInputStream()); } catch (ConnectException e) {
System.out.println("服务端异常.........");
System.out.println("请确认服务端是否开启.........");
} catch (IOException e) {
e.printStackTrace();
}
} public void disconnect() {
try {
if (dos != null)
dos.close();
if (s != null)
s.close();
} catch (IOException e) {
e.printStackTrace();
}
}}

package com.swift.server;import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.IOException;
import java.net.BindException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.swift.frame.LoginDialog;
import com.swift.jdbc.DBAdd;
import com.swift.jdbc.DBLogin;
import com.swift.other.User;public class LoginServer { boolean started = false;
ServerSocket ss = null;
Socket s = null;
String request = null;
String response = null; public static void main(String[] args) {
new LoginServer().fun();
} private void fun() {
try {
ss = new ServerSocket(8888);
started = true;
} catch (BindException e) {
System.out.println("端口使用中......");
} catch (IOException e1) {
e1.printStackTrace();
}
try {
while (started) {
s = ss.accept();
System.out.println("a client connected success");
Client c = new Client(s);
new Thread(c).start();
}
} catch (EOFException e) {
System.out.println("client has closed.");
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
ss.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} class Client implements Runnable { private Socket s;
private DataInputStream dis;
private DataOutputStream dos;
private boolean connected = false; public Client(Socket s) {
this.s = s;
try {
this.dis = new DataInputStream(s.getInputStream());
this.dos = new DataOutputStream(s.getOutputStream());
connected = true;
} catch (IOException e) {
e.printStackTrace();
}
} @Override
public void run() {
try {
while (connected) {
request = dis.readUTF();
response = request;
dos.writeUTF(response);
if (request.equals("login")) { String phone = dis.readUTF();
String password = dis.readUTF();
System.out.println(phone);
System.out.println(password); User user = new User(phone, password);
boolean login = DBLogin.login(user);
if (login) {
dos.writeUTF("success");
}else {
dos.writeUTF("fail");
} } else if (request.equals("reg")) {
String phone = dis.readUTF();
String password = dis.readUTF();
System.out.println(phone);
System.out.println(password); User user = new User(phone, password);
DBAdd.add(user);
}
}
} catch (SocketException e) {
System.out.println("一个登陆窗已经关闭....");
} catch (IOException e) {
e.printStackTrace();
} finally {
if (s != null) {
try {
s.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (dis != null) {
try {
dis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (dos != null) {
try {
dos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
} }
}

package com.swift.jdbc;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;public class DBUtil { public static Connection getConn() {
Connection conn=null;
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
String url="jdbc:mysql://localhost:3306/sw_database";
String user="root";
String password="root";
conn=DriverManager.getConnection(url, user, password);
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
} public static void closeAll(Connection conn,PreparedStatement ps,ResultSet rs) { if(conn!=null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(ps!=null) {
try {
ps.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(rs!=null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}

package com.swift.jdbc;import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;import com.swift.other.User;public class DBAdd { public static void add(User user) { String phone = user.getUsername();
String password = user.getPassword(); Connection conn = DBUtil.getConn();
PreparedStatement ps=null;
try {
ps = conn.prepareStatement("insert into sw_user(username,password) values(?,?)");
ps.setString(1, phone);
ps.setString(2, password);
int count = ps.executeUpdate();
if (count == 1) {
System.out.println("用户添加成功");
} else {
System.out.println("用户添加失败");
}
} catch (SQLException e) {
e.printStackTrace();
}finally {
DBUtil.closeAll(conn, ps, null);
} }}

package com.swift.jdbc;import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;import com.swift.other.User;public class DBLogin { public static boolean login(User user) { Connection conn=DBUtil.getConn();
PreparedStatement ps=null;
ResultSet rs=null;
try {
ps=conn.prepareStatement("select * from sw_user where username=? and password=?");
ps.setString(1, user.getUsername());
ps.setString(2, user.getPassword());
rs=ps.executeQuery();
if(rs.next()) {
return true;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
DBUtil.closeAll(conn, ps, rs);
return false;
}
}

package com.swift.other;public class User { private int id;
private String username;
private String password;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public User(int id, String username, String password) {
this.id = id;
this.username = username;
this.password = password;
}
public User() {
super();
}
public User(String username, String password) {
this.username = username;
this.password = password;
}
@Override
public String toString() {
return "User [id=" + id + ", username=" + username + ", password=" + password + "]";
}}

package com.swift.util;import java.awt.Dimension;
import java.awt.Point;
import java.awt.Toolkit;public class Center {
public static Point getPoint(int width,int height) {
Toolkit toolkit=Toolkit.getDefaultToolkit();//应该是单例
int screenW=toolkit.getScreenSize().width;
int screenH=toolkit.getScreenSize().height;
int x=(screenW-width)/2;
int y=(screenH-height)/2;
Point p=new Point(x,y);
return p;
}
//函数的重载，参数是包装类尺寸——Dimension
public static Point getPoint(Dimension d) {
Point p=getPoint(d.width,d.height);
return p;
}
}