Java Network Programming Learning Java Chat program code sharing _java

Copy Code code as follows:

Package com.neusoft.edu.socket;
Import Java.io.BufferedReader;
Import java.io.IOException;
Import Java.io.InputStreamReader;
Import Java.io.PrintWriter;
Import Java.net.ServerSocket;
Import Java.net.Socket;
/**
* Server-side code
* Get the information sent by the client, display and return the corresponding reply
* 1, create ServerSocket objects
* 2, call the Accept method to obtain the client connection
* 3, use the input stream to read the data sent by the client
* 4, using output to write data to the client
* 5, close the corresponding object
* @author L
*
*/
public class Chatserver {
/**
* @param args
*/
public static void Main (string[] args) {
try {
1, create the ServerSocket object, 8875 for the custom port number
ServerSocket Server = new ServerSocket (8857);

Simple Tips
System.out.println ("Waiting for client to connect ...");

2. Get Client Connection
Socket client = Server.accept ();

Get information about the client
System.out.println (Client.getinetaddress (). Gethostaddress () + "connected ...");

3.1. Define input and output stream objects
BufferedReader in = new BufferedReader (
New InputStreamReader (
Client.getinputstream ()));

Used to get data entered from the console and send that data to the client
BufferedReader inbyserver = new BufferedReader (
New InputStreamReader (system.in));

PrintWriter out = new PrintWriter (Client.getoutputstream (), true);

Data read from
String data = null;
String answer = NULL;

Looping and communicating with the client
Todo
{
3.2, read the data sent by the client
data = In.readline ();

To display read data on the server side
SYSTEM.OUT.PRINTLN ("Client sends message:" + data);

Get the information that the server side wants to send to the client
System.out.print ("server-side Reply client:");
Answer = Inbyserver.readline ();

3.3, write data to the client
Out.println (answer);
Out.flush ();
}while (!) Bye ". Equals (data));

4, close the relevant resources
Out.flush ();
In.close ();
Inbyserver.close ();
Out.close ();

Close the Socket object
Client.close ();
Server.close ();

SYSTEM.OUT.PRINTLN ("server-side shutdown ...");
catch (IOException e) {
TODO auto-generated Catch block
E.printstacktrace ();
}
}
}

Copy Code code as follows:

Package com.neusoft.edu.socket;

Import Java.io.BufferedReader;
Import java.io.IOException;
Import Java.io.InputStreamReader;
Import Java.io.PrintWriter;
Import Java.net.Socket;
Import java.net.UnknownHostException;

/**
* Chat Client
* 1, create socket object
* 2, write data
* 3, read data sent from the server side
* 4, close
* @author L
*
*/
public class ChatClient {

/**
* @param args
*/
public static void Main (string[] args) {
try {
1, create the Socket object, ("192.168.1.107", 8857) are host IP and port number, two class port number to be consistent
Socket client = new Socket ("192.168.1.107", 8857);

2.1. Create input and output stream objects
BufferedReader in = new BufferedReader (
New InputStreamReader (
Client.getinputstream ()));

PrintWriter out = new PrintWriter (Client.getoutputstream (), true);

BufferedReader inbyclient = new BufferedReader (
New InputStreamReader (system.in));

Server-side data sent
String data = null;
Data that the client writes to the server side
String answer = NULL;

Todo
{
2.2, the client's read and write operation
System.out.print ("You say:");
Get the data to send to the server side
Answer = Inbyclient.readline ();
Writing data to the server side
Out.println (answer);
Out.flush ();

Getting data sent from the server side
data = In.readline ();
Output data obtained from the server side
SYSTEM.OUT.PRINTLN ("Server-side return information is:" + data);
}while (!) Bye ". Equals (data));

3. Close
In.close ();
Out.close ();
Inbyclient.close ();
Client.close ();

SYSTEM.OUT.PRINTLN ("Client shutdown ...");
catch (Unknownhostexception e) {
TODO auto-generated Catch block
E.printstacktrace ();
catch (IOException e) {
TODO auto-generated Catch block
E.printstacktrace ();
}
}

}