我试图在NetBeans上运行java中的客户端服务器程序。在NetBeans上运行用Java编写的客户端 - 服务器程序
下面是该服务器的代码:
// 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]); #line 48, error arises here.
try
{
Thread t = new GreetingServer(port);
t.start();
}catch(IOException e)
{
e.printStackTrace();
}
}
}
这里的客户端代码:
// File Name GreetingClient.java
import java.io.*;
import java.net.*;
public class GreetingClient
{
public static void main(String [] args)
{
String serverName = args[0]; #line 10, error arises here
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();
}
}
}
所以,当我要模拟的客户端和服务器运行起来我第一次运行服务器。 一旦服务器运行,我需要运行客户端。
然而,当我尝试运行服务器上的文件,我得到以下错误:
运行: 异常线程 “main” java.lang.ArrayIndexOutOfBoundsException:0 在GreetingServer.main(GreetingServer.java: 48) Java结果:1个 BUILD SUCCESSFUL(总时间:0秒)
同样,当我尝试运行客户端程序,我得到以下错误:
运行: 异常在线程“主” java.lang.ArrayIndexOutOfBoundsException:0 在GreetingClient.main(GreetingClient.java:10) Java结果:1个 BUILD SUCCESSFUL(总时间:0秒)
这究竟是为什么?请帮忙。
UPDATE:
import java.net.*;
import java.io.*;
public class GreetingServer extends Thread
{
private static int port;
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)
{
port=9000;
try
{
Thread t = new GreetingServer(port);
t.start();
}catch(IOException e)
{
e.printStackTrace();
}
}
}
// File Name GreetingClient.java
import java.io.*;
import java.net.*;
public class GreetingClient
{
private static String serverName;
public static void main(String [] args)
{
String sName = "MyServerName";
int port = 9000;
try
{
System.out.println("Connecting to " + sName
+ " on port " + port);
Socket client = new Socket(sName, 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)
{
}
}
}
有在服务器端没有错误了。但我仍然得到下面的错误在客户端:
运行: 异常线程 “main” java.lang.ArrayIndexOutOfBoundsException:0 在GreetingClient.main(GreetingClient.java:10) Java结果:1 BUILD SUCCESSFUL(总时间:0秒)
当土特产品运行您的程序,你传递任何参数呢? – user902383 2013-04-24 08:34:24
你如何运行服务器? – Padrus 2013-04-24 08:35:41
不,我不是。如果我应该,那么我在哪里以及如何通过它们? – Anon 2013-04-24 08:36:14