java获取当前用户的IP地址代码！怎么样调用的？初学者！希望大家多多的帮帮忙！！

Posted 2023-05-06

参考技术A this.drpjiaobanren.Items.Add(new ListItem(aa[i], dd.Tables[0].Rows[0][0].ToString()));
改成this.drpjiaobanren.Items.Add(dd.Tables[0].Rows[0][0].ToString());
参考技术B 1获取本机的IP地址
Java代码

private static String getIpAddress() throws UnknownHostException
InetAddress address = InetAddress.getLocalHost();

return address.getHostAddress();


private static String getIpAddress() throws UnknownHostException
InetAddress address = InetAddress.getLocalHost();

return address.getHostAddress();


2获得网卡地址
Java代码

public static String getMACAddress()

String address = "";

String os = System.getProperty("os.name");
String osUser=System.getProperty("user.name");
if (os != null && os.startsWith("Windows"))

try

String command = "cmd.exe /c ipconfig /all";

Process p = Runtime.getRuntime().exec(command);

BufferedReader br =new BufferedReader(new InputStreamReader(p.getInputStream()));

String line;

while ((line = br.readLine()) != null)

if (line.indexOf("Physical Address") > 0)

int index = line.indexOf(":");

index += 2;

address = line.substring(index);

break;





br.close();

return address.trim();



catch (IOException e)



return address;



public static String getMACAddress()

String address = "";

String os = System.getProperty("os.name");
String osUser=System.getProperty("user.name");
if (os != null && os.startsWith("Windows"))

try

String command = "cmd.exe /c ipconfig /all";

Process p = Runtime.getRuntime().exec(command);

BufferedReader br =new BufferedReader(new InputStreamReader(p.getInputStream()));

String line;

while ((line = br.readLine()) != null)

if (line.indexOf("Physical Address") > 0)

int index = line.indexOf(":");

index += 2;

address = line.substring(index);

break;





br.close();

return address.trim();



catch (IOException e)



return address;



3获得操作系统帐号
Java代码

String osUser=System.getProperty("user.name");
String osUser=System.getProperty("user.name");

4获得操作系统版本
Java代码

1. import java.util.Properties;
2.
3. Properties props=System.getProperties(); //获得系统属性集
4. String osName = props.getProperty("os.name"); //操作系统名称
5. String osArch = props.getProperty("os.arch"); //操作系统构架
6. String osVersion = props.getProperty("os.version"); //操作系统版本

1. import java.util.Properties;
2.
3. Properties props=System.getProperties(); //获得系统属性集
4. String osName = props.getProperty("os.name"); //操作系统名称
5. String osArch = props.getProperty("os.arch"); //操作系统构架
6. String osVersion = props.getProperty("os.version"); //操作系统版本

5一些常用的信息获得
Java代码

public static String getProperty(String key)
键 相关值的描述
java.version Java 运行时环境版本
java.vendor Java 运行时环境供应商
java.vendor.url Java 供应商的 URL
java.home Java 安装目录
java.vm.specification.version Java 虚拟机规范版本
java.vm.specification.vendor Java 虚拟机规范供应商
java.vm.specification.name Java 虚拟机规范名称
java.vm.version Java 虚拟机实现版本
java.vm.vendor Java 虚拟机实现供应商
java.vm.name Java 虚拟机实现名称
java.specification.version Java 运行时环境规范版本
java.specification.vendor Java 运行时环境规范供应商
java.specification.name Java 运行时环境规范名称
java.class.version Java 类格式版本号
java.class.path Java 类路径
java.library.path 加载库时搜索的路径列表
java.io.tmpdir 默认的临时文件路径
java.compiler 要使用的 JIT 编译器的名称
java.ext.dirs 一个或多个扩展目录的路径
os.name 操作系统的名称
os.arch 操作系统的架构
os.version 操作系统的版本
file.separator 文件分隔符（在 UNIX 系统中是“/”）
path.separator 路径分隔符（在 UNIX 系统中是“:”）
line.separator 行分隔符（在 UNIX 系统中是“/n”）
user.name 用户的账户名称
user.home 用户的主目录
user.dir 用户的当前工作目录本回答被提问者采纳 参考技术C String ip = request.getRemoteAddr();

java获取局域网ip地址 具体代码

参考技术A import java.io.*;
import java.util.*;
import java.net.InetAddress;
public class Ip
static public HashMap ping; //ping 后的结果集
public HashMap getPing() //用来得到ping后的结果集
return ping;

//当前线程的数量, 防止过多线程摧毁电脑
static int threadCount = 0;
public Ip()
ping = new HashMap();

public void Ping(String ip) throws Exception
//最多30个线程
while(threadCount>30)
Thread.sleep(50);
threadCount +=1;
PingIp p = new PingIp(ip);
p.start();

public void PingAll() throws Exception
//首先得到本机的IP，得到网段
InetAddress host = InetAddress.getLocalHost();
String hostAddress = host.getHostAddress();
int k=0;
k=hostAddress.lastIndexOf(".");
String ss = hostAddress.substring(0,k+1);
for(int i=1;i <=255;i++) //对所有局域网Ip
String iip=ss+i;
Ping(iip);

//等着所有Ping结束
while(threadCount>0)
Thread.sleep(50);

public static void main(String[] args) throws Exception
Ip ip= new Ip();
ip.PingAll();
java.util.Set entries = ping.entrySet();
Iterator iter=entries.iterator();
String k;
while(iter.hasNext())
Map.Entry entry=(Map.Entry)iter.next();
String key=(String)entry.getKey();
String value=(String)entry.getValue();
if(value.equals("true"))
System.out.println(key+"-->"+value);


class PingIp extends Thread
public String ip; // IP
public PingIp(String ip)
this.ip=ip;

public void run()
try
Process p= Runtime.getRuntime().exec ("ping "+ip+ " -w 300 -n 1");
InputStreamReader ir = new InputStreamReader(p.getInputStream());
LineNumberReader input = new LineNumberReader (ir);
//读取结果行
for (int i=1 ; i <7; i++)
input.readLine();
String line= input.readLine();
if (line.length() <17 || line.substring(8,17).equals("timed out"))
ping.put(ip,"false");
else
ping.put(ip,"true");
//线程结束
threadCount -= 1;
catch (IOException e)


参考技术B java.net.NetworkInterface

Enumeration<InetAddress> getInetAddresses()
Convenience method to return an Enumeration with all or a
subset of the InetAddresses bound to this network interface.
List<InterfaceAddress> getInterfaceAddresses()
Get a List of all or a subset of theInterfaceAddressesof this network interface.