
import javanet;
public class Test {
public static void main(String[] args) throws Exception {
String ip = InetAddressgetLocalHost()getHostAddress();
Systemoutprintln(ip);
}
}
代码亲测可用:
import javanetInetAddress;
import javanetUnknownHostException;
public class TestInetAddress {
InetAddress myIpAddress = null;
InetAddress[] myServer = null;
public static void main(String args[]) {
TestInetAddress address = new TestInetAddress();
Systemoutprintln("Your host IP is: " + addressgetLocalhostIP());
String domain = ">
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 javaio;
import javautil;
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)
Threadsleep(50);
threadCount +=1;
PingIp p = new PingIp(ip);
pstart();
}
public void PingAll() throws Exception{
//首先得到本机的IP,得到网段
InetAddress host = InetAddressgetLocalHost();
String hostAddress = hostgetHostAddress();
int k=0;
k=hostAddresslastIndexOf("");
String ss = hostAddresssubstring(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)
Threadsleep(50);
}
public static void main(String[] args) throws Exception{
Ip ip= new Ip();
ipPingAll();
javautilSet entries = pingentrySet();
Iterator iter=entriesiterator();
String k;
while(iterhasNext()){
MapEntry entry=(MapEntry)iternext();
String key=(String)entrygetKey();
String value=(String)entrygetValue();
if(valueequals("true"))
Systemoutprintln(key+"-->"+value);
}
}
class PingIp extends Thread{
public String ip; // IP
public PingIp(String ip){
thisip=ip;
}
public void run(){
try{
Process p= RuntimegetRuntime()exec ("ping "+ip+ " -w 300 -n 1");
InputStreamReader ir = new InputStreamReader(pgetInputStream());
LineNumberReader input = new LineNumberReader (ir);
//读取结果行
for (int i=1 ; i <7; i++)
inputreadLine();
String line= inputreadLine();
if (linelength() <17 || linesubstring(8,17)equals("timed out"))
pingput(ip,"false");
else
pingput(ip,"true");
//线程结束
threadCount -= 1;
}catch (IOException e){}
}
}
}
public static void main(String[] args) { try { // 获取计算机名 String name = InetAddressgetLocalHost()getHostName(); // 获取IP地址 String ip = InetAddressgetLocalHost()getHostAddress(); Systemoutprintln("计算机名:"+name); Systemoutprintln("IP地址:"+ip); } catch (UnknownHostException e) { Systemoutprintln("异常:" + e); eprintStackTrace(); } }
是否可以解决您的问题?
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 javaio;
import javautil;
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)
Threadsleep(50);
threadCount +=1;
PingIp p = new PingIp(ip);
pstart();
}
public void PingAll() throws Exception{
//首先得到本机的IP,得到网段
InetAddress host = InetAddressgetLocalHost();
String hostAddress = hostgetHostAddress();
int k=0;
k=hostAddresslastIndexOf("");
String ss = hostAddresssubstring(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)
Threadsleep(50);
}
public static void main(String[] args) throws Exception{
Ip ip= new Ip();
ipPingAll();
javautilSet entries = pingentrySet();
Iterator iter=entriesiterator();
String k;
while(iterhasNext()){
MapEntry entry=(MapEntry)iternext();
String key=(String)entrygetKey();
String value=(String)entrygetValue();
if(valueequals("true"))
Systemoutprintln(key+"-->"+value);
}
}
class PingIp extends Thread{
public String ip; // IP
public PingIp(String ip){
thisip=ip;
}
public void run(){
try{
Process p= RuntimegetRuntime()exec ("ping "+ip+ " -w 300 -n 1");
InputStreamReader ir = new InputStreamReader(pgetInputStream());
LineNumberReader input = new LineNumberReader (ir);
//读取结果行
for (int i=1 ; i <7; i++)
inputreadLine();
String line= inputreadLine();
if (linelength() <17 || linesubstring(8,17)equals("timed out"))
pingput(ip,"false");
else
pingput(ip,"true");
//线程结束
threadCount -= 1;
}catch (IOException e){}
}
}
}
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