java通过IP地址获取物理位置

import java.io.*;import java.util.*;import java.util.regex.Matcher;import java.util.regex.Pattern;import java.net.InetAddress;import java.net.UnknownHostException;import java.nio.ByteOrder;import java.nio.MappedByteBuffer;import java.nio.channels.FileChannel;/*** 纯真ip查询主程序* QQWry.Dat保存在当前目录* @author _hhh_* @version 0.1, 04/23/08*/public class IpAddress {   //数据库地址   private String dataPath = "QQWry.dat";   //随机文件访问类   private RandomAccessFile ipFile = null;   //单一模式实例   private static IpAddress instance = new IpAddress();   //ip开始结束位置   private long ipBegin=0L;   private long ipEnd=0L;   //ip总数   private long ipSum=0L;   //国家,地区   private String country="";   private String area="";   // 一些固定常量，比如记录长度等等   private static final int RECORD_LENGTH = 7;   private static final byte AREA_FOLLOWED = 0x01;   private static final byte NO_AREA = 0x02;   /*   * 私有构造函数   */   private IpAddress() {       try {           ipFile = new RandomAccessFile(new File(dataPath).getAbsolutePath(), "r");           } catch (FileNotFoundException e) {             System.out.println("IP地址信息文件没有找到，IP显示功能将无法使用");       e.printStackTrace();       }       if(ipFile != null) {           try {                              ipBegin = byteArrayToLong(readBytes(0,4));               ipEnd = byteArrayToLong(readBytes(4,4));               if(ipBegin == -1 || ipEnd == -1) {                   ipFile.close();                   ipFile = null;               }           } catch (IOException e) {               System.out.println("IP地址信息文件格式有错误，IP显示功能将无法使用");               e.printStackTrace();           }       }       ipSum = (ipEnd-ipBegin)/RECORD_LENGTH+1;   }   /**   * 在指定位置读取一定数目的字节   * @param offset 位置   * @param num 多少个字节   * @return ret    */   private byte[] readBytes(long offset, int num) {       byte[] ret = new byte[num];       try {           ipFile.seek(offset);           for(int i=0; i != num; i++) {               ret[i] = ipFile.readByte();           }           return ret;       } catch (IOException e) {       e.printStackTrace();           System.out.println("读取文件失败_readBytes");           return ret;       }   }   /**   * 当前位置读取一定数目的字节   * @param num 多少个字节   * @return ret    */   private byte[] readBytes(int num) {       byte[] ret = new byte[num];       try {           for(int i=0; i != num; i++) {               ret[i] = ipFile.readByte();           }           return ret;       } catch (IOException e) {           System.out.println("读取文件失败_readBytes");           return ret;       }   }   /**   * 对little-endian字节序进行了转换   * byte[]转换为long   * @param b   * @return ret   */   private long byteArrayToLong(byte[] b) {       long ret = 0;       for(int i=0; i<b.length; i++) {           ret |= ( b[i] << (0x8*i) & (0xFF * (long)(Math.pow(0x100,i))) );       }       return ret;   }   /**   * 对little-endian字节序进行了转换   * @param ip ip的字节数组形式   * @return ip的字符串形式   */   private String byteArrayToStringIp(byte[] ip) {       StringBuffer sb = new StringBuffer();       for(int i=ip.length-1; i>=0; i--) {           sb.append(ip[i] & 0xFF);           sb.append(".");       }       sb.deleteCharAt(sb.length()-1);       return sb.toString();   }   /**   * 把ip字符串转换为long型   * @param ip   * @return long   */   private long StingIpToLong(String ip) {       String[] arr = ip.split("\\.");       return (Long.valueOf(arr[0])*0x1000000 +               Long.valueOf(arr[1])*0x10000 +               Long.valueOf(arr[2])*0x100 +               Long.valueOf(arr[3]));      }   /**   * 搜索ip,二分法   * @param String ip字符串0.0.0.0到255.255.255.255   * @return long ip所在位置   */   public long seekIp(String ip) {       long tmp = StingIpToLong(ip);       long i=0;       long j=ipSum;       long m = 0;       long lm=0L;       while(i<j) {           m = (i+j)/2;           lm = m*RECORD_LENGTH + ipBegin;           if( tmp == byteArrayToLong(readBytes(lm, 4))){                      return byteArrayToLong(readBytes(3));           }else if(j==(i+1)) {               return byteArrayToLong(readBytes(3));           }else if( tmp > byteArrayToLong(readBytes(lm, 4))){               i = m;           }else/* if( tmp < byteArrayToLong(readBytes(lm, 4)))*/{               j = m;           }       }       System.out.println("没有找到ip");       return -1L;   }   private String readArea(long offset) throws IOException {       ipFile.seek(offset);       byte b = ipFile.readByte();       if(b == 0x01 || b == 0x02) {           long areaOffset =byteArrayToLong(readBytes(offset+1,3));        //   if(areaOffset == 0)       //       return "未知";       //   else               return readString(areaOffset);       } else           return readString(offset);   }   /**   * 通过ip位置获取国家地区,   * 参照纯真ip数据库结构   * @param offset   * @return 国家+地区   */   private String seekCountryArea(long offset) {           try {           ipFile.seek(offset + 4);           byte b = ipFile.readByte();           if(b == AREA_FOLLOWED)            {               long countryOffset = byteArrayToLong(readBytes(3));               ipFile.seek(countryOffset);               b = ipFile.readByte();               if(b == NO_AREA) {                   country = readString(byteArrayToLong(readBytes(3)));                   ipFile.seek(countryOffset + 4);               } else                   country = readString(countryOffset);               //area = readArea(ipFile.getFilePointer());           } else if(b == NO_AREA) {               country = readString(byteArrayToLong(readBytes(3)));              // area = readArea(offset + 8);                  } else {               country = readString(ipFile.getFilePointer() - 1);               //area = readArea(ipFile.getFilePointer());           }           return readText(country,"省(.+?)市");//+" "+area;       } catch (IOException e) {           return null;       }   }      /**      * 正则表达式解析数据    * @param result      * @identifier      * @return      */     public static String readText(String result, String identifier) {          Pattern shopNumberPattern = Pattern.compile(identifier);          Matcher shopNamMatcher = shopNumberPattern.matcher(result);          if (shopNamMatcher.find())              return shopNamMatcher.group(1);          return "";      }    /**   * 从offset偏移处读取一个以0结束的字符串   * @param offset   * @return ret 读取的字符串，出错返回空字符串   */   private String readString(long offset){       try {           ipFile.seek(offset);           byte[] b = new byte[128];           int i;           for(i=0; (b.length != i) && ((b[i]=ipFile.readByte()) != 0); i++);           String ret = new String(b, 0 , i/*, "GBK"*/);           ret = ret.trim();           return (ret.equals("") ||                          ret.indexOf("CZ88.NET") != -1 )?"未知":ret;       } catch (IOException e) {           System.out.println("读取文件失败_readString");       }       return "";   }   /**   * 包含字符串的ip记录   * @param addr 地址   * @return IpRecord ip记录   */      public ArrayList<IpRecord> stringToIp(String addr) {       ArrayList<IpRecord> ret = new ArrayList<IpRecord>();       try{           FileChannel fc = ipFile.getChannel();           MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, ipFile.length());           mbb.order(ByteOrder.LITTLE_ENDIAN);           //上面3代码未使用,内存映射文件功能未写           for(long i = ipBegin+4; i != ipEnd+4; i += RECORD_LENGTH) {               String sca = seekCountryArea(byteArrayToLong(readBytes(i, 3)));                      if(sca.indexOf(addr) != -1) {                   IpRecord rec = new IpRecord();                   rec.address = sca;                   rec.beginIp= byteArrayToStringIp(readBytes(i-4,4));                   rec.endIp= byteArrayToStringIp(readBytes(i+3,4));                   ret.add(rec);               }            }       } catch (IOException e) {           System.out.println(e.getMessage());       }       return ret;   }   /**   * 封装ip记录,包括开始ip,结束ip和地址   */   private class IpRecord {       public String beginIp;       public String endIp;       public String address;       public IpRecord() {           beginIp = endIp = address = "";          }       public String toString() {           return beginIp + " - " + endIp + " " + address;       }   }   /**   * @return 单一实例   */   public static IpAddress getInstance() {       return instance;   }   /**   * @param ip   * @return ret   */   public String IpStringToAddress(String ip) {       //这里要添加ip格式判断       //public boolean isIP(Strin ip)       long ipOffset = seekIp(ip);       String ret = seekCountryArea(ipOffset);       return ret;   }   /**   * @return IpSum   */   public long getIpSum() {       return ipSum;   }   public static void main(String[] args) throws UnknownHostException {       IpAddress ipAddr = IpAddress.getInstance();       //ip总数       long l = ipAddr.getIpSum();       System.out.println(l);       //纯真ip数据更新时间       String str = ipAddr.IpStringToAddress("255.255.255.0");       System.out.println(str);              //测试       str = ipAddr.IpStringToAddress("222.88.59.214");       System.out.println(str);       str = ipAddr.IpStringToAddress("222.248.70.78");       System.out.println(str);       str = ipAddr.IpStringToAddress("188.1.255.255");       System.out.println(str);       str = ipAddr.IpStringToAddress("220.168.59.166");       System.out.println(str);       str = ipAddr.IpStringToAddress("221.10.61.90");       System.out.println(str);       InetAddress inet = InetAddress.getLocalHost();        System.out.println("本机的ip=" + inet.getHostAddress());    /*   java.net.InetAddress addr = null;       try{           addr = java.net.InetAddress.getLocalHost();       }catch(java.net.UnknownHostException e){           e.printStackTrace();       }       String ip=addr.getHostAddress().toString();//获得本机IP       System.out.print(ip);       String address=addr.getHostName().toString();//获得本机名称       System.out.print(address);       str = ipAddr.IpStringToAddress(ip);       System.out.println(str);*/       ArrayList<IpRecord> al = ipAddr.stringToIp("网吧");       Iterator it = al.iterator();       File f = new File("ipdata.txt");       try{       if(!f.exists()) {           f.createNewFile();       }       BufferedWriter out = new BufferedWriter(               new OutputStreamWriter(                   new FileOutputStream(f, true)                   )               );       int i=0;       while(it.hasNext()) {           out.write(it.next().toString());           out.newLine();           i++;       }       out.write(new Date().toString());       out.write("总共搜索到 "+i);       out.close();       }catch(IOException e){           e.printStackTrace();       }   }   } 

自己在网上在去下载个qqwry.dat放到更目录下就好