好的,我在书中找到了这个例子,所以我知道这段代码没有错误。下面的程序包含两个类,它们都是主类。一个用于客户端,另一个用于服务器。如何使用Eclipse在Java中编译此网络套接字示例?
根据这本书,我应该对它们进行编译如下:
编译客户端和服务器,然后启动服务器,如下所示:
$ java的GreetingServer 6066 等待客户端上的端口6066。 ..
检查客户端程序如下:
$ java的GreetingClient本地主机6066 连接到本地主机端口6066 菊st连接到本地主机/ 127.0.0.1:6066 服务器说感谢您连接到/127.0.0.1:6066 再见!
我希望能够在Eclipse中运行它们,但每次我这样做的时候,它给我这个错误:螺纹 异常“主要” java.lang.ArrayIndexOutOfBoundsException:0 在GreetingServer.main(GreetingServer。的java:47)。
如何在ECLIPSE中运行此程序?谢谢。
//文件名GreetingClient.java
import java.net.*;
import java.io.*;
public class GreetingClient
{
public static void main(String [] args)
{
String serverName = args[0];
int port = Integer.parseInt(args[1]);
try
{
System.out.println("Connecting to " + serverName
+ " on port " + port);
Socket client = new Socket(serverName, port);
System.out.println("Just connected to "
+ client.getRemoteSocketAddress());
OutputStream outToServer = client.getOutputStream();
DataOutputStream out =
new DataOutputStream(outToServer);
out.writeUTF("Hello from "
+ client.getLocalSocketAddress());
InputStream inFromServer = client.getInputStream();
DataInputStream in =
new DataInputStream(inFromServer);
System.out.println("Server says " + in.readUTF());
client.close();
}catch(IOException e)
{
e.printStackTrace();
}
}
}
// File Name GreetingServer.java
import java.net.*;
import java.io.*;
public class GreetingServer extends Thread
{
private ServerSocket serverSocket;
public GreetingServer(int port) throws IOException
{
serverSocket = new ServerSocket(port);
serverSocket.setSoTimeout(10000);
}
public void run()
{
while(true)
{
try
{
System.out.println("Waiting for client on port " +
serverSocket.getLocalPort() + "...");
Socket server = serverSocket.accept();
System.out.println("Just connected to "
+ server.getRemoteSocketAddress());
DataInputStream in =
new DataInputStream(server.getInputStream());
System.out.println(in.readUTF());
DataOutputStream out =
new DataOutputStream(server.getOutputStream());
out.writeUTF("Thank you for connecting to "
+ server.getLocalSocketAddress() + "\nGoodbye!");
server.close();
}catch(SocketTimeoutException s)
{
System.out.println("Socket timed out!");
break;
}catch(IOException e)
{
e.printStackTrace();
break;
}
}
}
public static void main(String [] args)
{
int port = Integer.parseInt(args[0]);
try
{
Thread t = new GreetingServer(port);
t.start();
}catch(IOException e)
{
e.printStackTrace();
}
}
}