收发字符串

 

直接使用字节流收发字符串比较麻烦，使用数据流对字节流进行封装，这样收发字符串就容易了 
1. 把输出流封装在DataOutputStream中 
使用writeUTF发送字符串 "Legendary!" 
2. 把输入流封装在DataInputStream 
使用readUTF读取字符串,并打印

 

 

 

 

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package socket;   import java.io.DataInputStream; import java.io.IOException; import java.io.InputStream; import java.net.ServerSocket; import java.net.Socket;   public class Server {       public static void main(String[] args) {         try {               ServerSocket ss = new ServerSocket(8888);               System.out.println("监听在端口号:8888");             Socket s = ss.accept();               InputStream is = s.getInputStream();               //把输入流封装在DataInputStream             DataInputStream dis = new DataInputStream(is);             //使用readUTF读取字符串             String msg = dis.readUTF();             System.out.println(msg);             dis.close();             s.close();             ss.close();         } catch (IOException e) {             // TODO Auto-generated catch block             e.printStackTrace();         }       } }

 

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package socket;   import java.io.DataOutputStream; import java.io.IOException; import java.io.OutputStream; import java.net.Socket; import java.net.UnknownHostException; import java.util.Scanner;   public class Client {       public static void main(String[] args) {           try {             Socket s = new Socket("127.0.0.1", 8888);               OutputStream os = s.getOutputStream();               //把输出流封装在DataOutputStream中             DataOutputStream dos = new DataOutputStream(os);             //使用writeUTF发送字符串             dos.writeUTF("Legendary!");             dos.close();             s.close();         } catch (UnknownHostException e) {             // TODO Auto-generated catch block             e.printStackTrace();         } catch (IOException e) {             // TODO Auto-generated catch block             e.printStackTrace();         }     } }