Atitit.获取某个服务 网络邻居列表 解决方案
原理，带入某个ip扫描从0---255
很快，多线程几秒就可以出来。
使用CountDownLatch来join线程..
返回 [{
"ip":"192.168.2.114",
"url":"http://@ip@:8080/cms/list_detail.html"
}]
package com.attilax.net;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import javax.management.RuntimeErrorException;
import com.attilax.core;
import com.attilax.json.AtiJson;
import com.attilax.lang.text.strUtil;
import com.csmy.my.center.util.zto.HttpUtil;
public class IPUtil {
public List<Map> urls=new ArrayList<Map>();
public static void main(String[] args) throws UnknownHostException {
// System.out.println( getIp());
String url = "http://@ip@:8080/cms/list_detail.html";
IPUtil ipx=new IPUtil();
List<Map> urls2 = ipx.getActIp(url);
System.out.println( AtiJson.toJson(urls2));
////////
}
public List<Map> getActIp(final String url) {
//String a = subnet_url("http://192.168.0.111/lime/aa.jsp");
//System.out.println(a);
// 192.168.2.114
String ip;
try {
ip = InetAddress.getLocalHost().getHostAddress();
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
throw new RuntimeException(e1);
}
System.out.println(ip);
String subnet = subnet(ip);
System.out.println(subnet);
//String okIp = "";
CountDownLatch end = new CountDownLatch(254);
for (int i = 1; i < 255; i++) {
final int tmp_i=i;
Runnable runnable = new Runnable() {
@Override
public void run() {
try {
String ip_item = subnet + "." + String.valueOf(tmp_i);
Stringurl2 = url.replace("@ip@", ip_item);
System.out.println(url2);
HttpUtil.sendGet(url2);
//okIp = url;
Map m=new HashMap();
m.put("ip", ip_item);
m.put("url", url);
urls.add(m);
} catch (Exception e) {
// e.printStackTrace();
String ip_item = subnet + "." + String.valueOf(tmp_i);
System.out.println( ip_item+ "err:"+e.getMessage() );
}
end.countDown();
}
};
core.execMeth_Ays(runnable, "threadName"+String.valueOf(i));
}
try{
end.await(); //等待end状态变为0，即为比赛结束
}catch (InterruptedException e) {
throw new RuntimeException(e);
}finally{
System.out.println("Race ends!");
}
// exe.shutdown();
return this.urls;
}
/**
* ret subnet from url
* @param url
* @return
*/
public static String subnet_url(String url) {
String[] a=strUtil.splitByMultiChar(url, "//,/");
String host_port=a[1];
return subnet(host_port);
}
public static String subnet(String host_port) {
int lastIdx=host_port.lastIndexOf(".");
return host_port.substring(0,lastIdx);
}
public static boolean isInternalIp(String ipAddress){
boolean isInnerIp = false;
long ipNum = getIpNum(ipAddress);
/**
私有IP：
A类 10.0.0.0-10.255.255.255
B类 172.16.0.0-172.31.255.255
C类 192.168.0.0-192.168.255.255
**/
long aBegin = getIpNum("10.0.0.0");
long aEnd = getIpNum("10.255.255.255");
long bBegin = getIpNum("172.16.0.0");
long bEnd = getIpNum("172.31.255.255");
long cBegin = getIpNum("192.168.0.0");
long cEnd = getIpNum("192.168.255.255");
isInnerIp = isInnerIp(ipNum,aBegin,aEnd) || isInnerIp(ipNum,bBegin,bEnd) || isInnerIp(ipNum,cBegin,cEnd) || ipAddress.equals("127.0.0.1"); //访问本地localhost获取为127.0.0.1
return isInnerIp;
}
private static long getIpNum(String ipAddress) {
String [] ip = ipAddress.split("\\.");
long a = Integer.parseInt(ip[0]);
long b = Integer.parseInt(ip[1]);
long c = Integer.parseInt(ip[2]);
long d = Integer.parseInt(ip[3]);
long ipNum = a * 256 * 256 * 256 + b * 256 * 256 + c * 256 + d;
return ipNum;
}
private static boolean isInnerIp(long userIp,long begin,long end){
return (userIp>=begin) && (userIp<=end);
}
public static String getIp()
{
InetAddress ia = null;
try {
ia = InetAddress.getLocalHost();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//System.out.println();
return ia.getHostAddress();
}
public static String subnet()
{
String ip=getIp();
int lastIdx=ip.lastIndexOf(".");
return ip.substring(0,lastIdx);
}
}
