看你获取的是win系统还是linux系统了：
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java执行操作系统的网卡地址语句：
获取机器名：
[java] view plain copy
public String getLocalHostName() {
String hostName;
try {
InetAddress addr = InetAddress.getLocalHost();
hostName = addr.getHostName();
} catch (Exception ex) {
hostName = "";
}
return hostName;
}
获取IP(多个网卡时获取了多个IP)：
[java] view plain copy
public ListString getNetworkAddress() {
ListString result = new ArrayListString();
EnumerationNetworkInterface netInterfaces;
try {
netInterfaces = NetworkInterface.getNetworkInterfaces();
InetAddress ip;
while (netInterfaces.hasMoreElements()) {
NetworkInterface ni = netInterfaces.nextElement();
EnumerationInetAddress addresses=ni.getInetAddresses();
while(addresses.hasMoreElements()){
ip = addresses.nextElement();
if (!ip.isLoopbackAddress() ip.getHostAddress().indexOf(':') == -1) {
result.add(ip.getHostAddress());
}
}
}
return result;
} catch (Exception e) {
return null;
}
}
java获取外网ip地址方法：
public class Main {
public static void main(String[] args) throws SocketException {
System.out.println(Main.getRealIp());
}
public static String getRealIp() throws SocketException {
String localip = null;// 本地IP，如果没有配置外网IP则返回它
String netip = null;// 外网IP
EnumerationNetworkInterface netInterfaces =
NetworkInterface.getNetworkInterfaces();
InetAddress ip = null;
boolean finded = false;// 是否找到外网IP
while (netInterfaces.hasMoreElements() !finded) {
NetworkInterface ni = netInterfaces.nextElement();
EnumerationInetAddress address = ni.getInetAddresses();
while (address.hasMoreElements()) {
ip = address.nextElement();
if (!ip.isSiteLocalAddress()
!ip.isLoopbackAddress()
ip.getHostAddress().indexOf(":") == -1) {// 外网IP
netip = ip.getHostAddress();
finded = true;
break;
} else if (ip.isSiteLocalAddress()
!ip.isLoopbackAddress()
ip.getHostAddress().indexOf(":") == -1) {// 内网IP
localip = ip.getHostAddress();
}
}
}
if (netip != null !"".equals(netip)) {
return netip;
} else {
return localip;
}
}
}
1.得到局域网网段，可由自己机器的IP来确定 （也可以手动获取主机IP-CMD-ipconfig /all）
2.根据IP类型，一次遍历局域网内IP地址
JAVA类，编译之后直接运行便可以得到局域网内所有IP,具体怎样使用你自己编写相应代码调用便可
代码如下：：
package bean;
import java.io.*;
import java.util.*;
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(threadCount30)
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(threadCount0)
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){}
}
}
}
//获取ip地址
public String getLocalIpAddress()
{
try {
String ipv4;
ArrayListNetworkInterface nilist = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface ni: nilist)
{
ArrayListInetAddress ialist = Collections.list(ni.getInetAddresses());
for (InetAddress address: ialist)
{
if (!address.isLoopbackAddress() InetAddressUtils.isIPv4Address(ipv4=address.getHostAddress()))
{
return ipv4;
}
}
}
} catch (SocketException ex)
{
//Log.e(LOG_TAG, ex.toString());
}
return null;
}
方法如下：
方法一，使用CMD命令：
public static String getLocalIPForCMD(){
StringBuilder sb = new StringBuilder();
String command = "cmd.exe /c ipconfig | findstr IPv4";
try {
Process p = Runtime.getRuntime().exec(command);
BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line = null;
while((line = br.readLine()) != null){
line = line.substring(line.lastIndexOf(":")+2,line.length());
sb.append(line);
}
br.close();
p.destroy();
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}
方法二，使用Java方法：
public static String getLocalIPForJava(){
StringBuilder sb = new StringBuilder();
try {
EnumerationNetworkInterface en = NetworkInterface.getNetworkInterfaces();
while (en.hasMoreElements()) {
NetworkInterface intf = (NetworkInterface) en.nextElement();
EnumerationInetAddress enumIpAddr = intf.getInetAddresses();
while (enumIpAddr.hasMoreElements()) {
InetAddress inetAddress = (InetAddress) enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress() !inetAddress.isLinkLocalAddress()
inetAddress.isSiteLocalAddress()) {
sb.append(inetAddress.getHostAddress().toString()+"\n");
}
}
}
} catch (SocketException e) { }
return sb.toString();
}
网页地址在代码中的java代码写法如下：
packagecom.test;
importjava.lang.reflect.Method;
//实现打开浏览器并跳到指定网址的类
publicclassBareBonesBrowserLaunch{
publicstaticvoidopenURL(Stringurl){
try{
browse(url);
}catch(Exceptione){
}
}
privatestaticvoidbrowse(Stringurl)throwsException{
//获取操作系统的名字
StringosName=System.getProperty("os.name","");
if(osName.startsWith("MacOS")){
//苹果的打开方式
ClassfileMgr=Class.forName("com.apple.eio.FileManager");
MethodopenURL=fileMgr.getDeclaredMethod("openURL",newClass[]{String.class});
openURL.invoke(null,newObject[]{url});
}elseif(osName.startsWith("Windows")){
//windows的打开方式。
Runtime.getRuntime().exec("rundll32url.dll,FileProtocolHandler"+url);
}else{
//UnixorLinux的打开方式
String[]browsers={"firefox","opera","konqueror","epiphany","mozilla","netscape"};
Stringbrowser=null;
for(intcount=0;countbrowsers.lengthbrowser==null;count++)
//执行代码，在brower有值后跳出，
//这里是如果进程创建成功了，==0是表示正常结束。
if(Runtime.getRuntime().exec(newString[]{"which",browsers[count]}).waitFor()==0)
browser=browsers[count];
if(browser==null)
thrownewException("Couldnotfindwebbrowser");
else
//这个值在上面已经成功的得到了一个进程。
Runtime.getRuntime().exec(newString[]{browser,url});
}
}
}
//主方法测试类
publicstaticvoidmain(String[]args){
Stringurl="";
BareBonesBrowserLaunch.openURL(url);
}