为什么我把connect()方法加入button1的事件中就会黑屏
代码如下
客户端:
package sunxu.util;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class ClientSocketFrame extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
private PrintWriter writer; // 声明PrintWriter类对象
private BufferedReader reader; // 声明BufferedReader对象
private Socket socket; // 声明Socket对象
private JTextArea ta_info; // 创建JtextArea对象
JButton button1 = new JButton("Connect");
//private JTextField tf_send; // 创建JtextField对象
private InetAddress sendIp;
private int sendPort;
private void connect() { // 连接套接字方法
ta_info.append("Connect to server…\n"); // 文本域中信息信息
try { // 捕捉异常
socket = new Socket(sendIp,sendPort); // 实例化Socket对象
while (true) {
writer = new PrintWriter(socket.getOutputStream(), true);
reader = new BufferedReader(new InputStreamReader(socket
.getInputStream())); // 实例化BufferedReader对象
ta_info.append("Client connected…\n"); // 文本域中提示信息
getServerInfo();
}
} catch (Exception e) {
e.printStackTrace(); // 输出异常信息
}
}
public static void main(String[] args) { // 主方法
ClientSocketFrame clien = new ClientSocketFrame(); // 创建本例对象
clien.setVisible(true); // 将窗体显示
//clien.connect(); // 调用连接方法
}
private void getServerInfo() {
try {
while (true) {
if (reader != null) {
String line = reader.readLine();// 读取服务器发送的信息
if (line != null)
ta_info.append("接收到服务器发送的信息:" + line + "\n"); // 显示服务器端发送的信息
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (reader != null) {
reader.close();// 关闭流
}
if (socket != null) {
socket.close(); // 关闭套接字
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Create the frame
*/
public ClientSocketFrame() {
super();
setTitle("客户端");
setBounds(100, 100, 361, 257);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JPanel panel = new JPanel();
getContentPane().add(panel, BorderLayout.NORTH);
panel.setBorder(BorderFactory.createTitledBorder("客户机设置:"));
final JLabel label = new JLabel();
label.setText("Server IP:");
panel.add(label);
JTextField tf_sen= new JTextField();
tf_sen.setPreferredSize(new Dimension(50, 25));
panel.add(tf_sen);
final JLabel label1 = new JLabel();
label1.setText("Server Port:");
panel.add(label1);
JTextField tf_Port = new JTextField();
tf_Port.setPreferredSize(new Dimension(50, 25));
panel.add(tf_Port);
final JButton button1 = new JButton("Connect");
button1.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) {
try {
sendIp=InetAddress.getByName(tf_sen.getText());
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
sendPort=Integer.parseInt(tf_Port.getText());
ta_info.append("Connect to server…\n"); // 文本域中信息信息
ta_info.append(sendIp+"\n"); // 文本域中信息信息
ta_info.append(sendPort+"\n"); // 文本域中信息信息
connect();
}
});
panel.add(button1);
final JPanel panel_1 = new JPanel();
getContentPane().add(panel_1, BorderLayout.SOUTH);
final JLabel label_1 = new JLabel();
label_1.setText("Say:");
panel_1.add(label_1);
JTextField tf_send = new JTextField();
tf_send.setPreferredSize(new Dimension(220, 25));
panel_1.add(tf_send);
final JButton button = new JButton();
button.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) {
writer.println(tf_send.getText()); // 将文本框中信息写入流
ta_info.append("客户端发送的信息:" + tf_send.getText()
+ "\n"); // 将文本框中信息显示在文本域中
tf_send.setText(""); // 将文本框清空
}
});
button.setText("Say");
panel_1.add(button);
final JScrollPane scrollPane = new JScrollPane();
getContentPane().add(scrollPane, BorderLayout.CENTER);
ta_info = new JTextArea();
scrollPane.setViewportView(ta_info);
//
}
}
服务器:
package sunxu.util;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.*;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class ServerSocketFrame extends JFrame {
//private JTextField tf_send;
private JTextArea ta_info;
private PrintWriter writer; // 声明PrintWriter类对象
private BufferedReader reader; // 声明BufferedReader对象
private ServerSocket server; // 声明ServerSocket对象
private Socket socket; // 声明Socket对象socket
private int sendPort;
public void getServer() {
try {
server = new ServerSocket(sendPort); // 实例化Socket对象
ta_info.append("服务器套接字已经创建成功\n"); // 输出信息
while (true) { // 如果套接字是连接状态
ta_info.append("等待客户机的连接......\n"); // 输出信息
socket = server.accept(); // 实例化Socket对象
reader = new BufferedReader(new InputStreamReader(socket
.getInputStream())); // 实例化BufferedReader对象
writer = new PrintWriter(socket.getOutputStream(), true);
getClientInfo(); // 调用getClientInfo()方法
}
} catch (Exception e) {
e.printStackTrace(); // 输出异常信息
}
}
private void getClientInfo() {
try {
while (true) {
String line = reader.readLine();// 读取客户端发送的信息
if (line != null)
ta_info.append("接收到客户机发送的信息:" + line + "\n"); // 显示客户端发送的信息
}
} catch (Exception e) {
ta_info.append("客户端已退出。\n"); // 输出异常信息
} finally {
try {
if (reader != null) {
reader.close();// 关闭流
}
if (socket != null) {
socket.close(); // 关闭套接字
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) { // 主方法
ServerSocketFrame frame = new ServerSocketFrame(); // 创建本类对象
frame.setVisible(true);
//frame.getServer(); // 调用方法
}
public ServerSocketFrame() {
super();
setTitle("服务器端程序");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 379, 260);
final JScrollPane scrollPane = new JScrollPane();
getContentPane().add(scrollPane, BorderLayout.CENTER);
ta_info = new JTextArea();
scrollPane.setViewportView(ta_info);
final JPanel panel = new JPanel();
getContentPane().add(panel, BorderLayout.SOUTH);
final JLabel label = new JLabel();
label.setText("Say:");
panel.add(label);
JTextField tf_send = new JTextField();
tf_send.setPreferredSize(new Dimension(150, 25));
panel.add(tf_send);
final JButton button = new JButton();
button.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) {
writer.println(tf_send.getText()); // 将文本框中信息写入流
ta_info.append("服务器发送的信息是:" + tf_send.getText() + "\n"); // 将文本框中信息显示在文本域中
tf_send.setText(""); // 将文本框清空
}
});
button.setText("Say:");
panel.add(button);
final JPanel panel_1 = new JPanel();
getContentPane().add(panel_1, BorderLayout.NORTH);
panel_1.setBorder(BorderFactory.createTitledBorder("服务器设置:"));
final JLabel label_1 = new JLabel();
label_1.setText("Port:");
JTextField tf_sen= new JTextField();
tf_sen.setPreferredSize(new Dimension(220, 25));
panel_1.add(label_1);
panel_1.add(tf_sen);
final JButton button1 = new JButton("Strat");
button1.addActionListener(new ActionListener() {
public void actionPerformed(final ActionEvent e) {
sendPort=Integer.parseInt(tf_sen.getText());
getServer();
}
});
panel_1.add(button1);
}
}