❶ java socket点对点聊天 就跟QQ一样，怎么获取ip问题
既然是Socket点对点的都会是长连接
socket对象有
socket.getInetAddress();
socket.getPort()
就可以得到对方的ip和端口号
❷ java web 聊天如何实现点对点的发送文件
当一个用户开始发送时，提示另一个用户接收。然后为他们做一个中转，也就是读出那边传过来的，再发出去。
❸ java如何实现一对一聊天谢谢了。
WebSocket 是 HTML5 开始提供的一种在单个 TCP 连接上进行全双工通讯的协议。
WebSocket 使得客户端和服务器之间的数据交换变得更加简单，允许服务端主动向客户端推送数据。在 WebSocket API 中，浏览器和服务器只需要完成一次握手，两者之间就直接可以创建持久性的连接，并进行双向数据传输。
在 WebSocket API 中，浏览器和服务器只需要做一个握手的动作，然后，浏览器和服务器之间就形成了一条快速通道。两者之间就直接可以数据互相传送。
❹ java简易聊天室
你要的就是点对点通信，见以下例子：
1.简单服务器端
/*
import java.net.*;
import java.io.*;
*/
ServerSocket server=null;
try {
server=new ServerSocket(%%1);
}catch(Exception e){
System.out.println("不能监听:"+e.toString());
}
Socket socket=null;
try {
socket=server.accept();
BufferedReader %%3=new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter %%4=new PrintWriter(socket.getOutputStream());
String %%2=%%3.readLine();
%%4.println("");
%%4.flush();
%%4.close();
%%3.close();
}
catch(IOException e){
System.out.println("出错:"+e.toString());
}finally{
try {
if(socket!=null){
socket.close();
server.close();
}
}
catch(IOException e){
e.printStackTrace();
}
}
2.简单客户端
/*
import java.net.*;
import java.io.*;
*/
Socket socket=null;
try {
socket=new Socket(%%1,%%2);
PrintWriter %%3=new PrintWriter(socket.getOutputStream());
BufferedReader %%4 = new BufferedReader(new InputStreamReader(socket.getInputStream()));
%%3.println("");
%%3.flush();
String %%5=%%4.readLine();
%%6
%%3.close();
%%4.close();
}catch(Exception e){
e.printStackTrace();
}
finally{
try {
socket.close();
}
catch(IOException e){
e.printStackTrace();
}
}
3.获得本机IP
//import java.net.*;
String strIP = null;
try
{
strIP =InetAddress.getLocalHost().getHostAddress().toString();
}
catch(UnknownHostException e)
{
e.printStackTrace();
}
/*
%%1=InetAddress.getLocalHost().getHostAddress();
Enumeration<NetworkInterface> netInterfaces = null;
try {
netInterfaces = NetworkInterface.getNetworkInterfaces();
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni = netInterfaces.nextElement();
System.out.println("DisplayName:" + ni.getDisplayName());
System.out.println("Name:" + ni.getName());
Enumeration<InetAddress> ips = ni.getInetAddresses();
while (ips.hasMoreElements()) {
System.out.println("IP:"
+ ips.nextElement().getHostAddress());
}
}
} catch (Exception e) {
e.printStackTrace();
}
*/
5.点对点通信
/*
import java.io.*;
import java.net.*;
*/
public class %%6 extends Thread {
@Override
public void run() {
ServerSocket server = null;
try {
server = new ServerSocket(5000);
} catch (Exception e) {
System.out.println("不能监听:" + e.toString());
}
Socket socket = null;
try {
socket = server.accept();
BufferedReader req = new BufferedReader(new InputStreamReader(
socket.getInputStream()));
PrintWriter os = new PrintWriter(socket.getOutputStream());
Debug.p(req.readLine());
os.println("Server");
os.flush();
os.close();
req.close();
} catch (IOException e) {
System.out.println("出错:" + e.toString());
} finally {
try {
if (socket != null) {
socket.close();
server.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
Thread t = new %%6();
t.start();
String strIP = null;
try {
strIP = InetAddress.getLocalHost().getHostAddress().toString();
} catch (UnknownHostException e) {
e.printStackTrace();
}
Socket socket = null;
try {
socket = new Socket(strIP, 4000);
PrintWriter pw = new PrintWriter(socket.getOutputStream());
BufferedReader br = new BufferedReader(new InputStreamReader(socket
.getInputStream()));
pw.println("Client");
pw.flush();
Debug.p(br.readLine());
pw.close();
br.close();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
❺ java多人点对点聊天软件
闲着无聊试着做了一下。多人点对点聊天软件 我做成exe了，. 不过功能有点出入，比如好友管理功能等没做 但是添加了其他的功能 你要的话exe发给你先看下，OK的话，把java源代码给你
❻ java socket点对点聊天 就跟QQ一样，怎么获取ip问题
1、客户端链接服务器
2、客户端发送用户名到服务器(比如发送"name:张三")
3、服务器根据前缀name: 验证用户，同时将当前socket与name存放在一个hashmap集合中，有了这个socket你害怕获取不到对应用户的ip?
❼ 用JAVA 编写简单网络聊天程序
Java编写的程序，为什么要遵循windows命名规范？再说，什么是windows命名规范？匈牙利命名法？分太少，不干，我说说思路吧。
点对点聊天，双方都是服务器，也都是客户端，当终端发送信息时就是客户，接收信息就是服务器，可能要有两个连接。简单的程序应该不难，毕竟Java比较简单。
❽ 我要一份用java网络编程写的点对点的两人聊天程序(TCP和UDP)
Server端：
import java.io.*;
import java.net.*;
import java.applet.Applet;
public class TalkServer{
public static void main(String args[]) {
try{
ServerSocket server=null;
try{
server=new ServerSocket(4700);
}catch(Exception e) {
System.out.println("can not listen to:"+e);
}
Socket socket=null;
try{
socket=server.accept();
}catch(Exception e) {
System.out.println("Error."+e);
}
String line;
BufferedReader is=new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter os=new PrintWriter(socket.getOutputStream());
BufferedReader sin=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Client:"+is.readLine());
line=sin.readLine();
while(!line.equals("bye")){
os.println(line);
os.flush();
System.out.println("Server:"+line);
System.out.println("Client:"+is.readLine());
line=sin.readLine();
}
os.close();
is.close();
socket.close();
server.close();
}catch(Exception e){
System.out.println("Error:"+e);
}
}
}
Client端：
import java.io.*;
import java.net.*;
public class TalkClient {
public static void main(String args[]) {
try{
Socket socket=new Socket("127.0.0.1",4700);
BufferedReader sin=new BufferedReader(new InputStreamReader(System.in));
PrintWriter os=new PrintWriter(socket.getOutputStream());
BufferedReader is=new BufferedReader(new InputStreamReader(socket.getInputStream()));
String readline;
readline=sin.readLine(); //从系统标准输入读入一字符串
while(!readline.equals("bye")){
os.println(readline);
os.flush();
System.out.println("Client:"+readline);
System.out.println("Server:"+is.readLine());
readline=sin.readLine(); //从系统标准输入读入一字符串
}
os.close(); //关闭Socket输出流
is.close(); //关闭Socket输入流
socket.close(); //关闭Socket
}catch(Exception e) {
System.out.println("Error"+e); //出错，则打印出错信息
}
}
}
❾ 利用Java编写一个程序利用Socket，实现网络的点对点文件传输并且能实现聊天，发个给我学习下，好吗
这个时比较简单的。
package QQ;
import java.net.*;
import java.io.*;
import java.sql.*;
import java.util.*;
public class QQServer {
public static void main(String args[]) {
try {
HashMap<String , Socket> hm = new
HashMap<String , Socket>() ;
// 服务器到8000端口监听(1)
ServerSocket ss = new ServerSocket
(8000);
while (true) {
System.out.println("服务器正在
8000端口监听.....");
Socket s = ss.accept();
MyService t = new MyService();
t.setSocket(s) ;
t.setHashMap(hm) ;
t.start();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
class MyService extends Thread {
private Socket s ;
private HashMap<String , Socket> hm ;
public void setHashMap(HashMap<String , Socket> hm){
this.hm = hm ;
}
public void setSocket(Socket s){
this.s = s ;
}
public void run() {
try {
// 接收客户端发送来的用户名和密码(2)
InputStream is = s.getInputStream();
InputStreamReader isr = new InputStreamReader
(is);
BufferedReader br = new BufferedReader(isr);
String uandp = br.readLine();
// 拆分用户名和密码(4)
String u = "";
String p = "";
try{
u = uandp.split("%")[0];
p = uandp.split("%")[1];
}catch(Exception e){}
// 到数据库中验证(5)
Class.forName
("com.microsoft.jdbc.sqlserver.SQLServerDriver");
Connection cn = DriverManager
.getConnection(
"jdbc:microsoft:sqlserver://127.0.0.1:1433;databasename=qq2",
"sa", "123");
PreparedStatement ps = cn
.prepareStatement("select
username from username where username=? and password=?");
ps.setString(1, u);
ps.setString(2, p);
ResultSet rs = ps.executeQuery();
// 发送确认信息到客户端(7)
OutputStream os = s.getOutputStream();
OutputStreamWriter osw = new
OutputStreamWriter(os);
PrintWriter pw = new PrintWriter(osw, true);
if (rs.next()) {
pw.println("ok");
//将自己的名字发送给HashMap中的其他人
(13)
for(Socket ts : hm.values()){
OutputStream tos =
ts.getOutputStream() ;
OutputStreamWriter tosw = new
OutputStreamWriter(tos) ;
PrintWriter tpw = new
PrintWriter(tosw , true) ;
tpw.println("user%"+u) ;
}
//将其他人的名字发送给自己(13)
for(String tu : hm.keySet()){
pw.println("user%"+tu) ;
}
//将用户名和对应的Socket存入HashMap
(13)
hm.put(u, s) ;
// 接收客户端发送来的信息(11)
while (true) {
String message = br.readLine
();
if(message.equals("exit")){
for(Socket ts :
hm.values()){
OutputStream
tos = ts.getOutputStream() ;
OutputStreamWriter tosw = new OutputStreamWriter(tos) ;
PrintWriter
tpw = new PrintWriter(tosw , true) ;
tpw.println
("exit%"+u);
}
hm.remove(u);
}
String to = message.split
("%")[0];
String mess = message.split
("%")[1];
Socket ts = hm.get(to);
OutputStream tos =
ts.getOutputStream();
OutputStreamWriter tosw = new
OutputStreamWriter(tos);
PrintWriter tpw = new
PrintWriter(tosw, true);
tpw.println("mess%"+mess
+"\n");
System.out.println(message);
}
} else {
pw.println("err");
}
} catch (Exception e) {}
}
}
❿ JAVA点对点聊天代码
给你一个做得很垃圾的Scoket的聊天的！
import java.io.InputStream;
import java.io.DataInputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.DataOutputStream;
import java.io.BufferedReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.io.IOException;
import java.util.Date;
class Server
{
public Server()
{
try
{
ServerSocket s=new ServerSocket(8888);
Socket ss=s.accept();
OutputStream out=ss.getOutputStream();
DataOutputStream dout=new DataOutputStream(out);
InputStream in=ss.getInputStream();
DataInputStream din=new DataInputStream(in);
System.out.print(din.readUTF()+"!");
dout.writeUTF("你已经连接到服务器"+"\t"+"你的地址："+ss.getInetAddress()+"\t"
+"你的链接端口："+ss.getLocalPort()+"\n");
new ReadMessage(din).start();
new SendMessage(dout).start();
}
catch (IOException e)
{
e.printStackTrace();
}
}
public static void main(String[] args)
{
new Server();
}
}
//接受客户端信息
class ReadMessage extends Thread
{
private DataInputStream din;
public ReadMessage(DataInputStream din)
{
this.din=din;
}
public void run()
{
String str;
try
{
while (true)
{
str=din.readUTF();
System.out.println(new Date().toLocaleString()+"客户端说："+str);
if (str.equals("bye"))
{
System.out.println("客户端下线！");
break;
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
// 发出服务器信息
class SendMessage extends Thread
{
private DataOutputStream dout;
public SendMessage(DataOutputStream dout)
{
this.dout=dout;
}
public void run()
{
InputStreamReader inr=new InputStreamReader(System.in);
BufferedReader buf=new BufferedReader(inr);
String str;
try
{
while(true)
{
str=buf.readLine();
dout.writeUTF(str);
if (str.equals("bye"))
{
System.out.println("服务器退出！");
System.exit(1);
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
import java.io.InputStream;
import java.io.DataInputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.DataOutputStream;
import java.io.BufferedReader;
import java.net.Socket;
import java.io.IOException;
import java.util.Date;
class Client
{
public Client()
{
try
{
Socket s=new Socket("192.168.1.2",8888);
InputStream in=s.getInputStream();
DataInputStream din=new DataInputStream(in);
OutputStream out=s.getOutputStream();
DataOutputStream dout=new DataOutputStream(out);
dout.writeUTF("服务器你好！我是客户端");
System.out.println(din.readUTF());
new Thread(new SenderMessage(dout)).start();
new Thread(new ReaderMessage(din)).start();
}
catch (IOException e)
{
e.printStackTrace();
}
}
public static void main(String[] args)
{
new Client();
}
}
class ReaderMessage implements Runnable
{
private DataInputStream din;
public ReaderMessage(DataInputStream din)
{
this.din=din;
}
public void run()
{
String str;
try
{
while(true)
{
str=din.readUTF();
System.out.println(new Date().toLocaleString()+"服务器说："+str);
if (str.equals("bye"))
{
System.out.println("服务器已经关闭，此程序自动退出！");
break;
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
class SenderMessage implements Runnable
{
private DataOutputStream dout;
public SenderMessage(DataOutputStream dout)
{
this.dout=dout;
}
public void run()
{
String str;
InputStreamReader inf=new InputStreamReader(System.in);
BufferedReader buf=new BufferedReader(inf);
try
{
while (true)
{
str=buf.readLine();
dout.writeUTF(str);
if (str.equals("bye"))
{
System.out.println("客户端自己退出！");
System.exit(1);
}
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
远程运行测试通过！