Network Management Technology - According to the IP address for achieving javaIP address,ip

According to the IP address for achieving java

According to find IP addresses of java realized, can \ t separated ip address format (initial IP \ t end IP \ t national \ t region \ n) into a binary format ascending through the binary search in 50 — 150ms to find the corresponding IP address information.
IPLook generate raw data available. Code: IPTool.java 0
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/ *
* Create Date 2004-10-23
*
* /
Package starfire.proxy.ip;

Import java.io.BufferedReader;
Import java.io.DataOutputStream;
Import java.io.File;
Import java.io.FileInputStream;
Import java.io.FileOutputStream;
Import java.io.IOException;
Import java.io.InputStreamReader;
Import java.io.RandomAccessFile;
Import java.net.InetAddress;
Import java.net.UnknownHostException;
Import java.util.ArrayList;
Import java.util.Collections;
Import java.util.Comparator;
Import java.util.HashMap;
Import java.util.Iterator;
Import java.util.StringTokenizer;

/ **
* 4 | 4 | 4 | 4 | 4 # total number of records | ip offset | index offset | offset data
* (4 | 4 | 2 | 2) * # initial IP | end IP | National Index | Regional Index
* (2 | 4) * # 2 indexes, four offset (at the corresponding country | local start position) (countryNULL | localNULL) *
*
* @ Author *
* /
(Public class IPTool
Private String dataPath;

Private RandomAccessFile raf;

Private IPFile ipfile;

Private byte buffer [] = new byte [40];

Private IPInfo minInfo = new IPInfo ();

Private IPInfo maxInfo = new IPInfo ();

Public static int str2Ip (String ip) (throws UnknownHostException
InetAddress address = InetAddress.getByName (ip);
Byte [] bytes = address.getAddress ();
Int a, b, c, d;
A = byte2int (bytes [0]);
B = byte2int (bytes [1]);
C = byte2int (bytes [2]);
D = byte2int (bytes [3]);
Int result = (a <<24) | (b <<16) | (c <<8) | d;
Return result;
)

Public static int byte2int (byte b) (
Int l = b & 0×07f;
If (b <0) (
L | = 0×80;
)
Return l;
)

Public static void format (String dataPath, String targetPath)
Throws IOException (
Long time = System.currentTimeMillis ();
BufferedReader in = new BufferedReader (new InputStreamReader (
New FileInputStream (dataPath)));
FileOutputStream fos = new FileOutputStream (targetPath);
DataOutputStream out = new DataOutputStream (fos);
String line;
ArrayList ipList = new ArrayList (150,000);
HashMap map = new HashMap (65,535);
ArrayList dataList = new ArrayList (65,535);
Iterator iterator = null;
While ((line = in.readLine ())! = Null) (
StringTokenizer token = new StringTokenizer (line, "\ t");
String start;
String end;
String country;
String local;
If (token.countTokens () == 4) (
Start = token.nextToken ();
Token.nextToken end = ();
Country = token.nextToken (). Trim ();
Token.nextToken local = ();
If (local.startsWith ("/")) (
Local.substring local = (1);
)
Local.trim local = ();
Try (
IPOriginInfo info = new IPOriginInfo ();
Info.startIP = str2Ip (start);
Info.endIP = str2Ip (end);
Info.country = country;
Info.local = local;
IpList.add (info);
Object obj = map.put (country, new Integer (map.size ()));
If (obj! = Null) (
Map.put (country, obj);
)
Else (
DataList.add (country);
)
Obj = map.put (local, new Integer (map.size ()));
If (obj! = Null) (
Map.put (local, obj);
)
Else (
DataList.add (local);
)
) Catch (UnknownHostException e) (
Continue;
)
)
)

IPFile ipfile = new IPFile ();
Ipfile.totalRecords = ipList.size ();
Ipfile.ipOffset = IPFile.HEADER_SIZE;
Ipfile.indexOffset + = ipfile.ipOffset ipList.size ()
* IPFile.IP_INFO_SIZE;
Ipfile.dataOffset + = ipfile.indexOffset map.size () * IPFile.INDEX_SIZE;

System.out.println ( "totalrecords:" + ipfile.totalRecords);
System.out.println ( "ipoffset:" + ipfile.ipOffset);
System.out.println ( "indexoffset:" + ipfile.indexOffset);
System.out.println ( "dataoffset:" + ipfile.dataOffset);
System.out.println ( "data size:" + map.size ());
/ / System.out.println ( "total size:" + total);

Out.writeInt (ipfile.magic);
Out.writeInt (ipfile.totalRecords);
Out.writeInt (ipfile.ipOffset);
Out.writeInt (ipfile.indexOffset);
Out.writeInt (ipfile.dataOffset);
Out.flush ();

/ / Sort
Collections.sort (ipList, new Comparator () (

Public int compare (Object o1, Object o2) (
IPOriginInfo info1 = (IPOriginInfo) o1;
IPOriginInfo info2 = (IPOriginInfo) o2;
Int2long long start = (info1.startIP);
= Int2long long end (info2.startIP);
Return (int) (start - end);
)

));
/ / Write ip information
= IpList.iterator iterator ();
While (iterator.hasNext ()) (
IPOriginInfo info = (IPOriginInfo) iterator.next ();
Out.writeInt (info.startIP);
Out.writeInt (info.endIP);
Short s = ((Integer) map.get (info.country)). ShortValue ();
Out.writeShort (s);
S = ((Integer) map.get (info.local)). ShortValue ();
Out.writeShort (s);
)
Out.flush ();

/ / Write indexing information
Ipfile.dataOffset = int position;
Int num = 0;
= DataList.iterator iterator ();
While (iterator.hasNext ()) (
String value = (String) iterator.next ();
Out.writeShort (num + +);
Out.writeInt (position);
If (position> 2729877) (
System.err.println ( "error:" + position);
)
Value.getBytes position + = (). Length + 1;
)
Out.flush ();

/ / Write country | local data
/ / = Sort.iterator iterator ();
Int size = dataList.size ();
For (int i = 0; i <size; i + +) (
String value = (String) dataList.get (i);
Out.write (value.getBytes ());
Out.write ((byte) 0);
)
Out.flush ();

In.close ();
Out.close ();
System.out.println ( "used" + (System.currentTimeMillis () - time) / 1000
+ "Seconds");
)

Public IPTool (String dataPath) throws IOException (
This.dataPath = dataPath;
This.ipfile = new IPFile ();
Load (dataPath);
)

Void load (String dataPath) throws IOException (
File f = new File (dataPath);
Raf = new RandomAccessFile (f, "r");
Int magic = raf.readInt ();
If (magic! = IPFile.MAGIC) (
Throw new IOException ( "bad format, the magic number not match");
)
Ipfile.totalRecords = raf.readInt ();
Ipfile.ipOffset = raf.readInt ();
Ipfile.indexOffset = raf.readInt ();
Ipfile.dataOffset = raf.readInt ();
Ipfile.dataCount = (ipfile.dataOffset - ipfile.indexOffset)
/ IPFile.INDEX_SIZE;
If (raf.length () <ipfile.dataOffset) (
Throw new IOException ( "bad format, length not match");
)
Ipfile.ipCount = (ipfile.indexOffset - ipfile.ipOffset)
/ IPFile.IP_INFO_SIZE;
Ipfile.minIP = int2long (raf.readInt ());
Raf.seek (ipfile.indexOffset - IPFile.IP_INFO_SIZE);
Ipfile.maxIP = int2long (raf.readInt ());
/ / System.out.println (ipfile.ipCount);
/ / FillInfo (0, minInfo);
/ / FillInfo (ipfile.ipCount-1, maxInfo);
)

Private void fillInfo (int pos, IPInfo info) throws IOException (
Raf.seek (* IPFile.IP_INFO_SIZE ipfile.ipOffset pos + + 8);
Int ci = short2int (raf.readShort ());
Int li = short2int (raf.readShort ());
Raf.seek (ci * IPFile.INDEX_SIZE ipfile.indexOffset + + 2);
Ci = raf.readInt ();
Raf.seek (* IPFile.INDEX_SIZE ipfile.indexOffset li + + 2);
Li = raf.readInt ();
Int2long long cl = (ci);
Int2long long ll = (li);
/ / System.out.println ( "ci =" + + cl "li =" + ll);
Raf.seek (cl);
Int ret = raf.read (buffer);
Int i = 0;
For (; i <ret; i + +) (
If (buffer [i] == 0) (
Break;
)
)
Info.setCountry (new String (buffer, 0, i));
Raf.seek (ll);
Ret = raf.read (buffer);
For (i = 0; i <ret; i + +) (
If (buffer [i] == 0) (
Break;
)
)
Info.setLocal (new String (buffer, 0, i));
/ / System.out.println (ll + "length =" + raf.length ());
)

Public synchronized IPInfo find (String ip) (
IPInfo info = new IPInfo ();
Info.setIp (ip);
Try (
/ / Long time = System.currentTimeMillis ();
Long ipNum = ip2long (ip);
Int pos = 1;
If (ipNum == ipfile.minIP) (
Pos = 0;
) Else if (ipNum == ipfile.maxIP) (
Pos = ipfile.ipCount - 1;
Else ()

Find pos = (0, ipfile.ipCount - 1, ipNum);
)
If (pos! = -1) (
FillInfo (pos, info);
)
/ / System.out.println ( "time =" + (System.currentTimeMillis ()-time));
) Catch (UnknownHostException e) (

) Catch (IOException e) (
E.printStackTrace ();
)
Return info;
)

Public int find (int start, int end, long target) throws IOException (
If (start> = end) (
Return -1;
)
Int middle = (+ start end) / 2;
Raf.seek (* IPFile.IP_INFO_SIZE middle ipfile.ipOffset +);
Long i = int2long (raf.readInt ());
Int2long long j = (raf.readInt ());
If (target> = i & & target <= j) (
Return middle;
)
If (target <i) (
End = middle;
Else ()
Start = middle;
)
Return find (start, end, the target);
)

Public static long ip2long (String ip) (throws UnknownHostException
Int ipNum = str2Ip (ip);
Return int2long (ipNum);
)

Public static long int2long (int i) (
Long l = i & 0×7fffffffL;
If (i <0) (
L | = 0×080000000L;
)
Return l;
)

Public static int short2int (short s) (
Int i = s & 0×7fff;
If (s <0) (
S | = 0×08000;
)
Return s;
)

Protected void finalize () (
If (raf! = Null) (
Try (
Raf.close ();
) Catch (IOException e) (
)
)
)

Public static void main (String [] args) throws Exception (
/ / Int ip = str2Ip ( "192.168.0.1");
/ / System.out.println (ip2long (ip));
/ / Format ( "ipdata.txt", "result.dat");
IPTool tool = new IPTool ( "result.dat");
IPInfo info = tool.find ( "211.155.224.222");
System.out.println (info.getCountry () + "" + info.getLocal ());
)
)

(Class IPOriginInfo
Public int startIP;
Public int endIP;
Public String country;
Public String local;
)

(Class IPFile
Public static final int MAGIC = 0×05080321;
Public static final int HEADER_SIZE = 20;
Public static final int IP_INFO_SIZE = 12;
Public static final int INDEX_SIZE = 6;

Public final int magic = MAGIC;
Public int totalRecords;
Public int ipOffset = HEADER_SIZE;
Public int indexOffset;
Public int dataOffset;

Int dataCount;
Int ipCount;
Long minIP;
Long maxIP;
)

IPInfo.java 0
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/ *
* Create Date 2004-10-23
*
* /
Package starfire.proxy.ip;

/ **
* @ Author *
* /
(Public class IPInfo

Private String ip;
Private String country = "";
Private String local = "";

/ **
* @ Return to return to country.
* /
Public String getCountry () (
Return country;
)
/ **
* @ Param country to set up the country.
* /
Public void setCountry (String country) (
This.country = country;
)
/ **
* @ Return ip return.
* /
Public String getIp () (
Return ip;
)
/ **
* @ Param ip to set ip.
* /
Public void setIp (String ip) (
This.ip = ip;
)
/ **
* @ Return to return to local.
* /
Public String getLocal () (
Return local;
)
/ **
* @ Param local settings to the local.
* /
Public void setLocal (String local) (
This.local = local;
)
)