问题遇到的现象和发生背景
客户端服务端无法进行通信，发送消息
问题相关代码，请勿粘贴截图
package 大作业;
import java.awt.*;
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.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
import javax.swing.*;
//import javax.xml.soap.Text;
public class TheMain {
JFrame frame1 = new JFrame();
JTextArea text1 = new JTextArea();
public int portnum;
public String name = "";
// Ser1 ser1;
/*
* public static void main(String args[]) throws IOException,
* InterruptedException { TheMain l=new TheMain(); //l.initDengLu();
*
* l.initLiaoTian();
*
* Ser1 ser1=new Ser1(); ser1.start();
*
* }
*/
public TheMain(int portnumber, String Name) {
portnum = portnumber;
name = Name;
Ser1 ser1 = new Ser1();
ser1.start();
}
public void initLiaoTian() {
// JFrame frame1=new JFrame();
frame1.setTitle("聊天界面");
frame1.setSize(800, 820);
frame1.setResizable(false);
frame1.setLocationRelativeTo(null);
frame1.setDefaultCloseOperation(2);
JLabel people = new JLabel("好友 聊天对象");
JButton button1 = new JButton("返回");
JPanel leftPanel = new JPanel();
people.setPreferredSize(new Dimension(700, 30));
button1.setPreferredSize(new Dimension(100, 30));
people.setFont(new Font("宋体", Font.BOLD, 20));
button1.setFont(new Font("宋体", Font.BOLD, 20));
leftPanel.add(button1);
leftPanel.add(people);
frame1.add(leftPanel, BorderLayout.CENTER);
// JTextArea text1=new JTextArea();
text1.setPreferredSize(new Dimension(780, 400));
text1.setBackground(Color.lightGray);
text1.setEditable(false);
frame1.add(text1, BorderLayout.CENTER);
JTextArea text2 = new JTextArea();
text2.setPreferredSize(new Dimension(780, 200));
text2.setBackground(Color.white);
text2.setEditable(true);
frame1.add(text2, BorderLayout.CENTER);
JPanel rightPanel = new JPanel();
JButton button2 = new JButton("发送");
JButton button3 = new JButton("文件");
button2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
text1.setEditable(true);
String str = null;
str = name + ":" + text2.getText();
Scanner reader = new Scanner(System.in);
try {
Socket socket = new Socket("127.0.0.1", portnum);
PrintWriter printwriter = new PrintWriter(socket.getOutputStream());// 发给服务器的数据
printwriter.println(str);
printwriter.flush();
BufferedReader bufferedreader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String line = bufferedreader.readLine();
text1.append("\r\n");
text1.append(line);
text1.setEditable(false);
printwriter.close();
bufferedreader.close();
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
text2.setText("");
}
});
/*
* button2.addActionListener(new ActionListener() { public void
* actionPerformed(ActionEvent e) { text1.setEditable(true); String
* str=text1.getText(); if(!str.isEmpty()) str+="\r\n";
* str=str+"我：\r\n"+text2.getText(); text1.setText(str);
* text1.setEditable(false); text2.setText(""); } });
*/
button2.setPreferredSize(new Dimension(100, 30));
button2.setFont(new Font("宋体", Font.BOLD, 20));
button3.setPreferredSize(new Dimension(100, 30));
button3.setFont(new Font("宋体", Font.BOLD, 20));
rightPanel.add(button2);
rightPanel.add(button3);
frame1.add(rightPanel, BorderLayout.CENTER);
FlowLayout f1 = new FlowLayout(FlowLayout.CENTER, 10, 20);
frame1.setLayout(f1);
/*
* JLabel label=new JLabel(new ImageIcon("001.jpg"));
*
* frame1.getLayeredPane().add(label);
*
* JPanel j=(JPanel)frame1.getContentPane(); j.setOpaque(false);
*/
frame1.setVisible(true);
}
public class Ser1 extends Thread {
public void run() {
// while(true) {
BufferedReader bufferedReader = null;
ServerSocket serverSocket1 = null;
Socket socket = null;
try {
// serverSocket1=new ServerSocket(8092);
// socket=serverSocket1.accept();
serverSocket1 = new ServerSocket(portnum + 1);/// 每个用户占用两个端口
while (true) {
System.out.println("开始等待请求。。。");
socket = serverSocket1.accept();
bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String line = bufferedReader.readLine();
// if (line.isEmpty()) {
text1.append("\r\n");
System.out.println("从客户端得到：" + line);
text1.append(line);
socket.close();
// }
}
} catch (IOException e) {
e.printStackTrace();
// System.out.println("8952");
}
try {
bufferedReader.close();
// socket.close();
} catch (Exception e) {
}
}
}
}
package 大作业;
import java.awt.*;
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.ServerSocket;
import java.net.Socket;
import java.util.Scanner;
import javax.swing.*;
//import javax.xml.soap.Text;
public class TheMain {
JFrame frame1 = new JFrame();
JTextArea text1 = new JTextArea();
public int portnum;
public String name = "";
// Ser1 ser1;
/*
* public static void main(String args[]) throws IOException,
* InterruptedException { TheMain l=new TheMain(); //l.initDengLu();
*
* l.initLiaoTian();
*
* Ser1 ser1=new Ser1(); ser1.start();
*
* }
*/
public TheMain(int portnumber, String Name) {
portnum = portnumber;
name = Name;
Ser1 ser1 = new Ser1();
ser1.start();
}
public void initLiaoTian() {
// JFrame frame1=new JFrame();
frame1.setTitle("聊天界面");
frame1.setSize(800, 820);
frame1.setResizable(false);
frame1.setLocationRelativeTo(null);
frame1.setDefaultCloseOperation(2);
JLabel people = new JLabel("好友 聊天对象");
JButton button1 = new JButton("返回");
JPanel leftPanel = new JPanel();
people.setPreferredSize(new Dimension(700, 30));
button1.setPreferredSize(new Dimension(100, 30));
people.setFont(new Font("宋体", Font.BOLD, 20));
button1.setFont(new Font("宋体", Font.BOLD, 20));
leftPanel.add(button1);
leftPanel.add(people);
frame1.add(leftPanel, BorderLayout.CENTER);
// JTextArea text1=new JTextArea();
text1.setPreferredSize(new Dimension(780, 400));
text1.setBackground(Color.lightGray);
text1.setEditable(false);
frame1.add(text1, BorderLayout.CENTER);
JTextArea text2 = new JTextArea();
text2.setPreferredSize(new Dimension(780, 200));
text2.setBackground(Color.white);
text2.setEditable(true);
frame1.add(text2, BorderLayout.CENTER);
JPanel rightPanel = new JPanel();
JButton button2 = new JButton("发送");
JButton button3 = new JButton("文件");
button2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
text1.setEditable(true);
String str = null;
str = name + ":" + text2.getText();
Scanner reader = new Scanner(System.in);
try {
Socket socket = new Socket("127.0.0.1", portnum);
PrintWriter printwriter = new PrintWriter(socket.getOutputStream());// 发给服务器的数据
printwriter.println(str);
printwriter.flush();
BufferedReader bufferedreader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String line = bufferedreader.readLine();
text1.append("\r\n");
text1.append(line);
text1.setEditable(false);
printwriter.close();
bufferedreader.close();
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
text2.setText("");
}
});
/*
* button2.addActionListener(new ActionListener() { public void
* actionPerformed(ActionEvent e) { text1.setEditable(true); String
* str=text1.getText(); if(!str.isEmpty()) str+="\r\n";
* str=str+"我：\r\n"+text2.getText(); text1.setText(str);
* text1.setEditable(false); text2.setText(""); } });
*/
button2.setPreferredSize(new Dimension(100, 30));
button2.setFont(new Font("宋体", Font.BOLD, 20));
button3.setPreferredSize(new Dimension(100, 30));
button3.setFont(new Font("宋体", Font.BOLD, 20));
rightPanel.add(button2);
rightPanel.add(button3);
frame1.add(rightPanel, BorderLayout.CENTER);
FlowLayout f1 = new FlowLayout(FlowLayout.CENTER, 10, 20);
frame1.setLayout(f1);
/*
* JLabel label=new JLabel(new ImageIcon("001.jpg"));
*
* frame1.getLayeredPane().add(label);
*
* JPanel j=(JPanel)frame1.getContentPane(); j.setOpaque(false);
*/
frame1.setVisible(true);
}
public class Ser1 extends Thread {
public void run() {
// while(true) {
BufferedReader bufferedReader = null;
ServerSocket serverSocket1 = null;
Socket socket = null;
try {
// serverSocket1=new ServerSocket(8092);
// socket=serverSocket1.accept();
serverSocket1 = new ServerSocket(portnum + 1);/// 每个用户占用两个端口
while (true) {
System.out.println("开始等待请求。。。");
socket = serverSocket1.accept();
bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String line = bufferedReader.readLine();
// if (line.isEmpty()) {
text1.append("\r\n");
System.out.println("从客户端得到：" + line);
text1.append(line);
socket.close();
// }
}
} catch (IOException e) {
e.printStackTrace();
// System.out.println("8952");
}
try {
bufferedReader.close();
// socket.close();
} catch (Exception e) {
}
}
}
}
###### 运行结果及报错内容
```java
java.net.ConnectException: Connection refused: connect
at java.base/java.net.PlainSocketImpl.connect0(Native Method)
at java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:101)
at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.base/java.net.Socket.connect(Socket.java:609)
at java.base/java.net.Socket.connect(Socket.java:558)
at java.base/java.net.Socket.<init>(Socket.java:454)
at java.base/java.net.Socket.<init>(Socket.java:231)
at 二号客户端.newOne$1.actionPerformed(newOne.java:153)
at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
###### 我的解答思路和尝试过的方法
###### 我想要达到的结果
二者正常通信
