所以我从互联网上得到了这个简单的UDP客户端/服务器代码,并且它能够正常运行。然而,当我输入比之前输入的更短的内容时,我会得到剩余的字符。例如,如果我先输入:
然后输入:
第二个印刷品的内容为:
我一直在查看其他遇到类似问题的人,他们大多数都通过清除字节数组来解决问题。然而,如果我尝试实现他们的答案,它并不能解决我的问题。我需要做什么,以及(可能更重要的是)代码中应该放在哪里?这是代码:
客户端:
服务器:
kitty
然后输入:
cat
第二个印刷品的内容为:
catty
我一直在查看其他遇到类似问题的人,他们大多数都通过清除字节数组来解决问题。然而,如果我尝试实现他们的答案,它并不能解决我的问题。我需要做什么,以及(可能更重要的是)代码中应该放在哪里?这是代码:
客户端:
import java.io.*;
import java.net.*;
class UDPClient
{
public static void main(String args[]) throws Exception
{
BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
DatagramSocket clientSocket = new DatagramSocket();
InetAddress IPAddress = InetAddress.getByName("localhost");
byte[] sendData = new byte[1024];
byte[] receiveData = new byte[1024];
String sentence = inFromUser.readLine();
sendData = sentence.getBytes();
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 20700);
clientSocket.send(sendPacket);
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
clientSocket.receive(receivePacket);
String modifiedSentence = new String(receivePacket.getData());
System.out.println("FROM SERVER:" + modifiedSentence);
clientSocket.close();
}
}
服务器:
import java.io.*;
import java.net.*;
import java.util.*;
class UDPServer
{
public static void main(String args[]) throws Exception
{
DatagramSocket serverSocket = new DatagramSocket(21200);
byte[] receiveData = new byte[1024];
byte[] sendData = new byte[1024];
while(true)
{
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
serverSocket.receive(receivePacket);
String sentence = new String( receivePacket.getData(), 0, receivePacket.getLength());
System.out.println("RECEIVED: " + sentence);
InetAddress IPAddress = receivePacket.getAddress();
int port = receivePacket.getPort();
String capitalizedSentence = sentence.toUpperCase();
sendData = capitalizedSentence.getBytes();
DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, port);
serverSocket.send(sendPacket);
}
}
}
receivePacket.setLength(receiveData.getLength())
- Chris.JenkinsreceivePacket.setLength(receiveData.length)
。 - user207421