10.Socket
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Socket
核心代码:
客户端:
TCP
//创建一个Socket对象,指定服务器端的IP地址和端口号Socket socket = new Socket("192.168.1.104",4567);//使用InputStream读取硬盘上的文件InputStream inputStream = new FileInputStream("f://file/words.txt");//从Socket当中得到OutputStreamOutputStream outputStream = socket.getOutputStream();byte buffer [] = new byte[4*1024];int temp = 0 ;//将InputStream当中的数据取出,并写入到OutputStream当中while((temp = inputStream.read(buffer)) != -1){outputStream.write(buffer, 0, temp);}outputStream.flush();
UDP
//首先创建一个DatagramSocket对象DatagramSocket socket = new DatagramSocket(4567);//创建一个InetAddreeInetAddress serverAddress = InetAddress.getByName("192.168.1.104");String str = "hello";byte data [] = str.getBytes();//创建一个DatagramPacket对象,并指定要讲这个数据包发送到网络当中的哪个地址,以及端口号DatagramPacket packet = new DatagramPacket(data,data.length,serverAddress,4567);//调用socket对象的send方法,发送数据socket.send(packet);
服务端:
TCP
//创建一个ServerSocket对象,并让这个Socket在4567端口监听 ServerSocket serverSocket = new ServerSocket(4567);//调用ServerSocket的accept()方法,接受客户端所发送的请求Socket socket = serverSocket.accept();//从Socket当中得到InputStream对象InputStream inputStream = socket.getInputStream();byte buffer [] = new byte[1024*4];int temp = 0;//从InputStream当中读取客户端所发送的数据while((temp = inputStream.read(buffer)) != -1){System.out.println(new String(buffer,0,temp));}serverSocket.close();
UDP
//创建一个DatagramSocket对象,并指定监听的端口号DatagramSocket socket = new DatagramSocket(4567);byte data [] = new byte[1024];//创建一个空的DatagramPacket对象DatagramPacket packet = new DatagramPacket(data,data.length);//使用receive方法接收客户端所发送的数据socket.receive(packet);String result = new String(packet.getData(),packet.getOffset(),packet.getLength());System.out.println("result--->" + result);
控件图例:
具体应用:
客户端:
TCP
package mars;import java.io.FileInputStream;import java.io.InputStream;import java.io.OutputStream;import java.io.OutputStreamWriter;import java.io.Writer;import java.net.Socket;public class TCPClient {public static void main(String[] args) {try {//创建一个Socket对象,指定服务器端的IP地址和端口号Socket socket = new Socket("192.168.1.104",4567);//使用InputStream读取硬盘上的文件InputStream inputStream = new FileInputStream("f://file/words.txt");//从Socket当中得到OutputStreamOutputStream outputStream = socket.getOutputStream();byte buffer [] = new byte[4*1024];int temp = 0 ;//将InputStream当中的数据取出,并写入到OutputStream当中while((temp = inputStream.read(buffer)) != -1){outputStream.write(buffer, 0, temp);}outputStream.flush();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
UDP
package mars;import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;public class UDPClient {public static void main(String[] args) {try {//首先创建一个DatagramSocket对象DatagramSocket socket = new DatagramSocket(4567);//创建一个InetAddreeInetAddress serverAddress = InetAddress.getByName("192.168.1.104");String str = "hello";byte data [] = str.getBytes();//创建一个DatagramPacket对象,并指定要讲这个数据包发送到网络当中的哪个地址,以及端口号DatagramPacket packet = new DatagramPacket(data,data.length,serverAddress,4567);//调用socket对象的send方法,发送数据socket.send(packet);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}}
服务端:
TCP
package mars.socket;import java.net.DatagramPacket;import java.net.DatagramSocket;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class SocketActivity extends Activity { /** Called when the activity is first created. */private Button startButton = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); startButton = (Button)findViewById(R.id.startListener); startButton.setOnClickListener(new StartSocketListener()); } class StartSocketListener implements OnClickListener{@Overridepublic void onClick(View v) {new ServerThread().start();} } class ServerThread extends Thread{ public void run(){ //声明一个ServerSocket对象 ServerSocket serverSocket = null; try { //创建一个ServerSocket对象,并让这个Socket在4567端口监听serverSocket = new ServerSocket(4567);//调用ServerSocket的accept()方法,接受客户端所发送的请求Socket socket = serverSocket.accept();//从Socket当中得到InputStream对象InputStream inputStream = socket.getInputStream();byte buffer [] = new byte[1024*4];int temp = 0;//从InputStream当中读取客户端所发送的数据while((temp = inputStream.read(buffer)) != -1){System.out.println(new String(buffer,0,temp));}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{try {serverSocket.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}} } }}
UDP
package mars.socket;import java.net.DatagramPacket;import java.net.DatagramSocket;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class SocketActivity extends Activity { /** Called when the activity is first created. */private Button startButton = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); startButton = (Button)findViewById(R.id.startListener); startButton.setOnClickListener(new StartSocketListener()); } class StartSocketListener implements OnClickListener{@Overridepublic void onClick(View v) {new ServerThread().start();} } class ServerThread extends Thread{ public void run(){ try { //创建一个DatagramSocket对象,并指定监听的端口号DatagramSocket socket = new DatagramSocket(4567);byte data [] = new byte[1024];//创建一个空的DatagramPacket对象DatagramPacket packet = new DatagramPacket(data,data.length);//使用receive方法接收客户端所发送的数据socket.receive(packet);String result = new String(packet.getData(),packet.getOffset(),packet.getLength());System.out.println("result--->" + result);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();} } }}
项目文件地址:
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