简单实用的Socket例子--服务端+客户端

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/**服务端**/import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket;public class Server {public static final int PORT = 8080;public static void main(String[] args) throws IOException {ServerSocket server = new ServerSocket(PORT);System.out.println("Started " + server);try {Socket client = server.accept();try {System.out.println("Connection accepted: " + client);BufferedReader  reader = new BufferedReader(new InputStreamReader(client.getInputStream()));PrintWriter writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(client.getOutputStream())),true);while(true){String str = reader.readLine();if(str.equals("END"))break;System.out.println("Echoing:" + str);writer.println(str);}} finally{System.out.println("closing...");client.close();}} finally{server.close();}}}

/**客户端**/import java.io.BufferedOutputStream;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.InetAddress;import java.net.Socket;public class Client {public static void main(String[] args) throws IOException {InetAddress address = InetAddress.getByName(null);System.out.println("address:" + address);Socket client = new Socket(address,JobServer.PORT);try{System.out.println("socket:" + client);BufferedReader reader = new BufferedReader(new InputStreamReader(client.getInputStream()));PrintWriter writer = new PrintWriter(new BufferedOutputStream(client.getOutputStream()),true);for(int i = 0; i < 10 ; i++){writer.println("howdy " +  i);String str = reader.readLine();System.out.println(str);}writer.println("END");}finally{System.out.println("closing...");client.close();}}}