请指点一下有关 IP解析的代码

2011-05-28 03:31:59 112 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

解析IP数据包 //#include "stdafx.h"#include "winsock2.h"#include "ws2tcpip.h"#include "iostream.h"#include "stdio.h"typedef struct _IP_HEADER{ union { BYTE Version;//版本 BYTE HdrLen;//IHL }; BYTE ServiceType;//服务阅读详情

JFrame newf = new JFrame();
newf.setSize(200,100);
newf.setVisible(true);
JTextArea text1 = new JTextArea(1,10);
JTextArea text2 = new JTextArea(1,10);
JButton newb = new JButton("确定");
newf.add(text1,BorderLayout.NORTH);
newf.add(newb,BorderLayout.CENTER);
newf.add(text2,BorderLayout.SOUTH);

InetAddress address1 = null;
InetAddress address2 = null;
try
{
address1 = InetAddress.getByName(text1.getText().toString());
System.out.println(address1.getHostName());//输出主机名
address2 = InetAddress.getByName(text2.getText().toString());
System.out.println(address2);//输出指定机器的IP地址

}
catch (UnknownHostException b)
{
System.err.println(b);//显示错误信息
}

谁能帮我看下这段代码。功能是：获取输入的主机名或IP地址，输出对应IP地址或主机名。

...全文

c语言解析ip的主要代码 printf("请输入你需要解析的IP地址:"); scanf("%lx",&input_IP); BeginByte = (input_IP >> 24) & ~(~0 MidByte = (input_IP >> 16) & ~(~0 ThirdByte = (input_IP >> 8 ) & ~(~0 EndByte = input_IP 阅读详情

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茫茫大海 2011-05-28

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import java.awt.BorderLayout;

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.net.InetAddress;

import java.net.UnknownHostException;



import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;



public class Main extends JFrame implements ActionListener {



	private JTextArea name;

	private JTextArea ip;

	private JButton button;

	private JTextArea result;



	public Main() {

		name = new JTextArea(1, 10);

		ip = new JTextArea(1, 10);

		button = new JButton("确定");

		button.addActionListener(this);

		JPanel panel = new JPanel();

		panel.setLayout(new FlowLayout());

		panel.add(new JLabel("主机名:"));

		panel.add(name);

		panel.add(new JLabel("IP地址:"));

		panel.add(ip);

		panel.add(button);

		this.add(panel, BorderLayout.NORTH);



		result = new JTextArea(15, 20);

		result.setEditable(false);

		JScrollPane jsp = new JScrollPane(result);//给显示结果的JTextArea加上滚动条

		this.add(jsp);



		this.setTitle("地址解析");

		this.setSize(600, 400);

		this.setVisible(true);

		this.setResizable(false);

		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

	}



	/**

	 * 处理确定按钮单击的事件

	 */

	public void actionPerformed(ActionEvent e) {

		if (e.getActionCommand().equals("确定")) {

			if (name.getText().trim().equals("")) {

				JOptionPane.showMessageDialog(this, "主机名不能为空！");

				return;

			}

			if (ip.getText().trim().equals("")) {

				JOptionPane.showMessageDialog(this, "IP地址不能为空！");

				return;

			} else if(!ip.getText().trim().matches("((25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]\\d|\\d)\\.){3}(25[0-5]|2[0-4]\\d|1\\d\\d|[1-9]\\d|[1-9])")) {//验证IP地址格式是否正确

				JOptionPane.showMessageDialog(this, "IP地址格式错误，请检查后重新输入！");

				return;

			}



			InetAddress address1 = null;

			InetAddress address2 = null;

			try {

				address1 = InetAddress.getByName(name.getText().trim());

				String message = "主机名:" + name.getText() + " 对应的IP地址为:" + address1.getHostAddress();

				if(!result.getText().equals("")) 

					message = result.getText() + "\n" + message;

				result.setText(message);

				address2 = InetAddress.getByName(ip.getText().trim());

				message = "IP地址:" + ip.getText() + " 对应的主机名为:" + address2.getHostName();

				result.setText(result.getText() + "\n" + message);

			} catch (UnknownHostException b) {

				JOptionPane.showMessageDialog(this, "操作过程中出现了错误，请检查输入是否正确！");

				return;

			}



		}

	}



	public static void main(String[] args) {

		new Main();

	}

}

没看明白楼主的代码，根据楼主的大概意思写了上面的程序，楼主可以看看！

诚朴勇毅 2011-05-28

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我觉得应该把newf.setVisible(true);放在JTextArea 后面。
查JDK文档吧。

茫茫大海 2011-05-28

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看什么，你发帖的目的是什么呢？

请指点一下有关 IP解析的代码

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