本文实例讲述了java Tcp通信客户端与服务器端。分享给大家供大家参考，具体如下：
由服务器端发送数据
服务器端：
import java.io.*;
import java.net.*;
public class TestSocket {
public static void mAIn(String[] args) {
try {
ServerSocket ss = new ServerSocket(8888);
while(true) {
Socket s = ss.accept();
OutputStream os = s.getOutputStream();
DataOutputStream dos = new DataOutputStream(os);
dos.writeUTF("hello" + s.getInetAddress() + "port" + s.getPort() + "beybye");
dos.close();
// os.flush();
os.close();
// s.close();
}
} catch (IOException e) {
e.printStackTrace();
System.out.println("there is a wrong");
}
}
}
用户端：
import java.io.*;
import java.net.*;
public class TestClient {
public static void main(String[] args){
try {
Socket s = new Socket("127.0.0.1",8888);
DataInputStream dis = new DataInputStream(s.getInputStream());
System.out.println(dis.readUTF());
s.close();
dis.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
无论是客户端还是服务器端都可以收发数据。
交互型
用户端
import java.io.*;
import java.net.*;
public class TestClient2 {
public static void main(String[] args){
try {
Socket s = new Socket("127.0.0.1",8886);
DataOutputStream dos = new DataOutputStream(s.getOutputStream());
DataInputStream dis = new DataInputStream(s.getInputStream());
System.out.println(dis.readUTF());
dos.writeUTF("hey");
String str = null;
if((str = dis.readUTF()) != null) {
System.out.println(str);
}
s.close();
dis.close();
dos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
服务器端：
public class TestServer2 {
public static void main(String[] args) {
InputStream in = null;
OutputStream out = null;
try {
ServerSocket ss = new ServerSocket(8886);
while(true) {
Socket s = ss.accept();
in = s.getInputStream();
out = s.getOutputStream();
DataOutputStream dos = new DataOutputStream(s.getOutputStream());
DataInputStream dis = new DataInputStream(s.getInputStream());
String str = null;
if((str = dis.readUTF() )!= null) {
System.out.println(str);
System.out.println("form " + s.getInetAddress());
System.out.println("port " + s.getPort());
// dos.writeUTF("hello" + s.getInetAddress() + "port" + s.getPort() + "beybye");
}
dos.writeUTF("hi hello");
dis.close();
dos.close();
s.close();
}
} catch (IOException e) {
e.printStackTrace();
System.out.println("there is a wrong");
}
}
}
