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java服务端客户端代码 java服务端客户端代码是多少( 六 )

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} catch (UnknownHostException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
//System.out.println("connection ok");
DataOutputStream outToServer = null;
try {
outToServer = new DataOutputStream(clientSocket.getOutputStream());
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
BufferedReader inFromServer = null;
try {
inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
sentence=jt1.getText()+" "+jt2.getText();
try {
//System.out.println(sentence);
outToServer.writeBytes(sentence + '\n');
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
try {
modifiedSentence = inFromServer.readLine();
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
//System.out.println("FROM SERVER:"+modifiedSentence);
jt3.setText(modifiedSentence);
try {
clientSocket.close();
} catch (IOException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws Exception
{
Main m=new Main();
}
}
服务器端
import java.io.*;
import java.net.*;
public class Main {
public static void main(String[] args) throws Exception {
String clientSentence;
String capitalizedSentence;
ServerSocket welcomeSocket=new ServerSocket(6789);
while(true){
Socket connectionSocket=welcomeSocket.accept();
BufferedReader inFromClient=new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
DataOutputStream outToClient=new DataOutputStream(connectionSocket.getOutputStream());
clientSentence=inFromClient.readLine();
//capitalizedSentence=clientSentence.toUpperCase()+'\r'+'\n';
//outToClient.writeBytes(capitalizedSentence);
if(clientSentence.equalsIgnoreCase("admin 1234"))
outToClient.writeBytes("ok"+'\n');
else
outToClient.writeBytes("error"+'\n');
}
}
}
用java代码实现客户端与服务端建立连接？套接字 Socket
import java.net.*;
Server:
ServerSocket server=new ServerSocket(port);//port是端口
Socket socket=server.accept();
//等待客户机的连接请求，若连接 ， 则创建一套接字，并将返回 。
Client:
Socket socket=new Socket("host",port);//host主机名（本机：127.0.0.1）
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