LumaQQ与IP查询二（转）

下面是改进了一点点的版本：

1 IPSeeker.java

package com.worthtech.app.util.ip;import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteOrder;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;/*** <pre>* 用来读取QQwry.dat文件，以根据ip获得好友位置，QQwry.dat的格式是* 一. 文件头，共8字节*    1. 第一个起始IP的绝对偏移， 4字节*     2. 最后一个起始IP的绝对偏移， 4字节* 二. &quot;结束地址/国家/区域&quot;记录区*     四字节ip地址后跟的每一条记录分成两个部分*     1. 国家记录*     2. 地区记录*     但是地区记录是不一定有的。而且国家记录和地区记录都有两种形式*     1. 以0结束的字符串*     2. 4个字节，一个字节可能为0x1或0x2*   a. 为0x1时，表示在绝对偏移后还跟着一个区域的记录，注意是绝对偏移之后，而不是这四个字节之后*        b. 为0x2时，表示在绝对偏移后没有区域记录*        不管为0x1还是0x2，后三个字节都是实际国家名的文件内绝对偏移*   如果是地区记录，0x1和0x2的含义不明，但是如果出现这两个字节，也肯定是跟着3个字节偏移，如果不是*        则为0结尾字符串* 三. &quot;起始地址/结束地址偏移&quot;记录区*     1. 每条记录7字节，按照起始地址从小到大排列*        a. 起始IP地址，4字节*        b. 结束ip地址的绝对偏移，3字节* * 注意，这个文件里的ip地址和所有的偏移量均采用little-endian格式，而java是采用* big-endian格式的，要注意转换* </pre>* * @author 马若劼*/
public class IPSeeker {/*** <pre>* 用来封装ip相关信息，目前只有两个字段，ip所在的国家和地区* </pre>* * @author 马若劼*/private class IPLocation {public String country;public String area;public IPLocation() {country = area = "";}public IPLocation getCopy() {IPLocation ret = new IPLocation();ret.country = country;ret.area = area;return ret;}}private static final String IP_FILE = IPSeeker.class.getResource("qqwry.dat").toString().substring(5);// 一些固定常量，比如记录长度等等private static final int IP_RECORD_LENGTH = 7;private static final byte AREA_FOLLOWED = 0x01;private static final byte NO_AREA = 0x2;// 用来做为cache，查询一个ip时首先查看cache，以减少不必要的重复查找private final Hashtable ipCache;// 随机文件访问类private RandomAccessFile ipFile;// 内存映射文件private MappedByteBuffer mbb;// 单一模式实例private static IPSeeker instance = new IPSeeker();// 起始地区的开始和结束的绝对偏移private long ipBegin, ipEnd;// 为提高效率而采用的临时变量private final IPLocation loc;
//  private final byte[] buf;//不需要了private final byte[] b4;private final byte[] b3;/*** 私有构造函数*/private IPSeeker() {ipCache = new Hashtable();loc = new IPLocation();
//      buf = new byte[100];//不需要了，这里初始化不好!b4 = new byte[4];b3 = new byte[3];try {ipFile = new RandomAccessFile(IP_FILE, "r");} catch (FileNotFoundException e) {System.out.println(IPSeeker.class.getResource("QQWry.dat").toString());System.out.println(IP_FILE);System.out.println("IP地址信息文件没有找到，IP显示功能将无法使用");ipFile = null;}// 如果打开文件成功，读取文件头信息if (ipFile != null) {try {ipBegin = readLong4(0);ipEnd = readLong4(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");ipFile = null;}}}/*** @return 单一实例*/public static IPSeeker getInstance() {return instance;}/*** 给定一个地点的不完全名字，得到一系列包含s子串的IP范围记录* * @param s*            地点子串* @return 包含IPEntry类型的List*/public List getIPEntriesDebug(String s) {List ret = new ArrayList();long endOffset = ipEnd + 4;for (long offset = ipBegin + 4; offset <= endOffset; offset += IP_RECORD_LENGTH) {// 读取结束IP偏移long temp = readLong3(offset);// 如果temp不等于-1，读取IP的地点信息if (temp != -1) {IPLocation loc = getIPLocation(temp);// 判断是否这个地点里面包含了s子串，如果包含了，添加这个记录到List中，如果没有，继续if (loc.country.indexOf(s) != -1 || loc.area.indexOf(s) != -1) {IPEntry entry = new IPEntry();entry.country = loc.country;entry.area = loc.area;// 得到起始IPreadIP(offset - 4, b4);entry.beginIp = Util.getIpStringFromBytes(b4);// 得到结束IPreadIP(temp, b4);entry.endIp = Util.getIpStringFromBytes(b4);// 添加该记录ret.add(entry);}}}return ret;}/*** 给定一个地点的不完全名字，得到一系列包含s子串的IP范围记录* * @param s*            地点子串* @return 包含IPEntry类型的List*/public List getIPEntries(String s) {List ret = new ArrayList();try {// 映射IP信息文件到内存中if (mbb == null) {FileChannel fc = ipFile.getChannel();mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, ipFile.length());mbb.order(ByteOrder.LITTLE_ENDIAN);}int endOffset = (int) ipEnd;for (int offset = (int) ipBegin + 4; offset <= endOffset; offset += IP_RECORD_LENGTH) {int temp = readInt3(offset);if (temp != -1) {IPLocation loc = getIPLocation(temp);// 判断是否这个地点里面包含了s子串，如果包含了，添加这个记录到List中，如果没有，继续if (loc.country.indexOf(s) != -1|| loc.area.indexOf(s) != -1) {IPEntry entry = new IPEntry();entry.country = loc.country;entry.area = loc.area;// 得到起始IPreadIP(offset - 4, b4);entry.beginIp = Util.getIpStringFromBytes(b4);// 得到结束IPreadIP(temp, b4);entry.endIp = Util.getIpStringFromBytes(b4);// 添加该记录ret.add(entry);}}}} catch (IOException e) {System.out.println(e.getMessage());}return ret;}/*** 从内存映射文件的offset位置开始的3个字节读取一个int* * @param offset* @return*/private int readInt3(int offset) {mbb.position(offset);return mbb.getInt() & 0x00FFFFFF;}/*** 从内存映射文件的当前位置开始的3个字节读取一个int* * @return*/private int readInt3() {return mbb.getInt() & 0x00FFFFFF;}/*** 根据IP得到国家名* * @param ip*            ip的字节数组形式* @return 国家名字符串*/public String getCountry(byte[] ip) {// 检查ip地址文件是否正常if (ipFile == null)return "错误的IP数据库文件";// 保存ip，转换ip字节数组为字符串形式String ipStr = Util.getIpStringFromBytes(ip);// 先检查cache中是否已经包含有这个ip的结果，没有再搜索文件if (ipCache.containsKey(ipStr)) {IPLocation loc = (IPLocation) ipCache.get(ipStr);return loc.country;} else {IPLocation loc = getIPLocation(ip);ipCache.put(ipStr, loc.getCopy());return loc.country;}}/*** 根据IP得到国家名* * @param ip*            IP的字符串形式* @return 国家名字符串*/public String getCountry(String ip) {return getCountry(Util.getIpByteArrayFromString(ip));}/*** 根据IP得到地区名* * @param ip*            ip的字节数组形式* @return 地区名字符串*/public String getArea(byte[] ip) {// 检查ip地址文件是否正常if (ipFile == null)return "错误的IP数据库文件";// 保存ip，转换ip字节数组为字符串形式String ipStr = Util.getIpStringFromBytes(ip);// 先检查cache中是否已经包含有这个ip的结果，没有再搜索文件if (ipCache.containsKey(ipStr)) {IPLocation loc = (IPLocation) ipCache.get(ipStr);return loc.area;} else {IPLocation loc = getIPLocation(ip);ipCache.put(ipStr, loc.getCopy());return loc.area;}}/*** 根据IP得到地区名* * @param ip*            IP的字符串形式* @return 地区名字符串*/public String getArea(String ip) {return getArea(Util.getIpByteArrayFromString(ip));}/*** 根据ip搜索ip信息文件，得到IPLocation结构，所搜索的ip参数从类成员ip中得到* * @param ip*            要查询的IP* @return IPLocation结构*/private IPLocation getIPLocation(byte[] ip) {IPLocation info = null;long offset = locateIP(ip);if (offset != -1)info = getIPLocation(offset);if (info == null) {info = new IPLocation();info.country = "未知国家";info.area = "未知地区";}return info;}/*** 从offset位置读取4个字节为一个long，因为java为big-endian格式，所以没办法 用了这么一个函数来做转换* * @param offset* @return 读取的long值，返回-1表示读取文件失败*/private long readLong4(long offset) {long ret = 0;try {ipFile.seek(offset);ret |= (ipFile.readByte() & 0xFF);ret |= ((ipFile.readByte() << 8) & 0xFF00);ret |= ((ipFile.readByte() << 16) & 0xFF0000);ret |= ((ipFile.readByte() << 24) & 0xFF000000);return ret;} catch (IOException e) {return -1;}}/*** 从offset位置读取3个字节为一个long，因为java为big-endian格式，所以没办法 用了这么一个函数来做转换* * @param offset* @return 读取的long值，返回-1表示读取文件失败*/private long readLong3(long offset) {long ret = 0;try {ipFile.seek(offset);ipFile.readFully(b3);ret |= (b3[0] & 0xFF);ret |= ((b3[1] << 8) & 0xFF00);ret |= ((b3[2] << 16) & 0xFF0000);return ret;} catch (IOException e) {return -1;}}/*** 从当前位置读取3个字节转换成long* * @return*/private long readLong3() {long ret = 0;try {ipFile.readFully(b3);ret |= (b3[0] & 0xFF);ret |= ((b3[1] << 8) & 0xFF00);ret |= ((b3[2] << 16) & 0xFF0000);return ret;} catch (IOException e) {return -1;}}/*** 从offset位置读取四个字节的ip地址放入ip数组中，读取后的ip为big-endian格式，但是* 文件中是little-endian形式，将会进行转换* * @param offset* @param ip*/private void readIP(long offset, byte[] ip) {try {ipFile.seek(offset);ipFile.readFully(ip);byte temp = ip[0];ip[0] = ip[3];ip[3] = temp;temp = ip[1];ip[1] = ip[2];ip[2] = temp;} catch (IOException e) {System.out.println(e.getMessage());}}/*** 从offset位置读取四个字节的ip地址放入ip数组中，读取后的ip为big-endian格式，但是* 文件中是little-endian形式，将会进行转换* * @param offset* @param ip*/private void readIP(int offset, byte[] ip) {mbb.position(offset);mbb.get(ip);byte temp = ip[0];ip[0] = ip[3];ip[3] = temp;temp = ip[1];ip[1] = ip[2];ip[2] = temp;}/*** 把类成员ip和beginIp比较，注意这个beginIp是big-endian的* * @param ip*            要查询的IP* @param beginIp*            和被查询IP相比较的IP* @return 相等返回0，ip大于beginIp则返回1，小于返回-1。*/private int compareIP(byte[] ip, byte[] beginIp) {for (int i = 0; i < 4; i++) {int r = compareByte(ip[i], beginIp[i]);if (r != 0)return r;}return 0;}/*** 把两个byte当作无符号数进行比较* * @param b1* @param b2* @return 若b1大于b2则返回1，相等返回0，小于返回-1*/private int compareByte(byte b1, byte b2) {if ((b1 & 0xFF) > (b2 & 0xFF)) // 比较是否大于return 1;else if ((b1 ^ b2) == 0)// 判断是否相等return 0;elsereturn -1;}/*** 这个方法将根据ip的内容，定位到包含这个ip国家地区的记录处，返回一个绝对偏移 方法使用二分法查找。* * @param ip*            要查询的IP* @return 如果找到了，返回结束IP的偏移，如果没有找到，返回-1*/private long locateIP(byte[] ip) {long m = 0;int r;// 比较第一个ip项readIP(ipBegin, b4);r = compareIP(ip, b4);if (r == 0)return ipBegin;else if (r < 0)return -1;// 开始二分搜索for (long i = ipBegin, j = ipEnd; i < j;) {m = getMiddleOffset(i, j);readIP(m, b4);r = compareIP(ip, b4);// log.debug(Utils.getIpStringFromBytes(b));if (r > 0)i = m;else if (r < 0) {if (m == j) {j -= IP_RECORD_LENGTH;m = j;} elsej = m;} elsereturn readLong3(m + 4);}// 如果循环结束了，那么i和j必定是相等的，这个记录为最可能的记录，但是并非// 肯定就是，还要检查一下，如果是，就返回结束地址区的绝对偏移m = readLong3(m + 4);readIP(m, b4);r = compareIP(ip, b4);if (r <= 0)return m;elsereturn -1;}/*** 得到begin偏移和end偏移中间位置记录的偏移* * @param begin* @param end* @return*/private long getMiddleOffset(long begin, long end) {long records = (end - begin) / IP_RECORD_LENGTH;records >>= 1;if (records == 0)records = 1;return begin + records * IP_RECORD_LENGTH;}/*** 给定一个ip国家地区记录的偏移，返回一个IPLocation结构* * @param offset* @return*/private IPLocation getIPLocation(long offset) {try {// 跳过4字节ipipFile.seek(offset + 4);// 读取第一个字节判断是否标志字节byte b = ipFile.readByte();if (b == AREA_FOLLOWED) {// 读取国家偏移long countryOffset = readLong3();// 跳转至偏移处ipFile.seek(countryOffset);// 再检查一次标志字节，因为这个时候这个地方仍然可能是个重定向b = ipFile.readByte();if (b == NO_AREA) {loc.country = readString(readLong3());ipFile.seek(countryOffset + 4);} elseloc.country = readString(countryOffset);// 读取地区标志loc.area = readArea(ipFile.getFilePointer());} else if (b == NO_AREA) {loc.country = readString(readLong3());loc.area = readArea(offset + 8);} else {loc.country = readString(ipFile.getFilePointer() - 1);loc.area = readArea(ipFile.getFilePointer());}return loc;} catch (IOException e) {return null;}}/*** @param offset* @return*/private IPLocation getIPLocation(int offset) {// 跳过4字节ipmbb.position(offset + 4);// 读取第一个字节判断是否标志字节byte b = mbb.get();if (b == AREA_FOLLOWED) {// 读取国家偏移int countryOffset = readInt3();// 跳转至偏移处mbb.position(countryOffset);// 再检查一次标志字节，因为这个时候这个地方仍然可能是个重定向b = mbb.get();if (b == NO_AREA) {loc.country = readString(readInt3());mbb.position(countryOffset + 4);} elseloc.country = readString(countryOffset);// 读取地区标志loc.area = readArea(mbb.position());} else if (b == NO_AREA) {loc.country = readString(readInt3());loc.area = readArea(offset + 8);} else {loc.country = readString(mbb.position() - 1);loc.area = readArea(mbb.position());}return loc;}/*** 从offset偏移开始解析后面的字节，读出一个地区名* * @param offset* @return 地区名字符串* @throws IOException*/private String readArea(long offset) throws IOException {ipFile.seek(offset);byte b = ipFile.readByte();if (b == 0x01 || b == 0x02) {long areaOffset = readLong3(offset + 1);if (areaOffset == 0)return "未知地区";elsereturn readString(areaOffset);} elsereturn readString(offset);}/*** @param offset* @return*/private String readArea(int offset) {mbb.position(offset);byte b = mbb.get();if (b == 0x01 || b == 0x02) {int areaOffset = readInt3();if (areaOffset == 0)return "未知地区";elsereturn readString(areaOffset);} elsereturn readString(offset);}/*** 从offset偏移处读取一个以0结束的字符串* * @param offset* @return 读取的字符串，出错返回空字符串*/private String readString(long offset) {try {ipFile.seek(offset);//int i;//for (i = 0, buf[i] = ipFile.readByte(); buf[i] != 0; buf[++i] = ipFile.readByte());//上面的写法读取数据如果超过100个字节就会报数组越界异常int i = 0;byte[] buf = new byte[256];while ((buf[i] = ipFile.readByte()) != 0) {++ i;if (i >= buf.length) {byte[] tmp = new byte[i + 100];System.arraycopy(buf, 0, tmp, 0, i);buf = tmp;}}/if (i != 0)return Util.getString(buf, 0, i, "GBK");} catch (IOException e) {System.out.println(e.getMessage());}return "";}/*** 从内存映射文件的offset位置得到一个0结尾字符串* * @param offset* @return*/private String readString(int offset) {try {mbb.position(offset);//int i;//for (i = 0, buf[i] = mbb.get(); buf[i] != 0; buf[++i] = mbb.get());int i = 0;byte[] buf = new byte[256];while ((buf[i] = mbb.get()) != 0) {++ i;if (i >= buf.length) {byte[] tmp = new byte[i + 100];System.arraycopy(buf, 0, tmp, 0, i);buf = tmp;}}if (i != 0)return Util.getString(buf, 0, i, "GBK");} catch (IllegalArgumentException e) {System.out.println(e.getMessage());}return "";}public String getAddress(String ip) {String country = getCountry(ip).equals(" CZ88.NET") ? "": getCountry(ip);String area = getArea(ip).equals(" CZ88.NET") ? "" : getArea(ip);String address = country + " " + area;return address.trim();      }public static void main(String[] args) {IPSeeker ipseeker = IPSeeker.getInstance();   String sip[] = { "60.177.69.138", "124.91.62.239", "124.91.62.239",   "59.40.87.8", "221.222.73.88", "60.51.114.120",   "222.212.223.146", "60.51.114.120", "60.51.114.120",   "60.51.114.120", "60.51.114.120", "211.99.23.121",   "58.45.85.107", "58.45.85.107", "121.32.94.204",   "117.22.46.178", "218.19.2.195", "58.218.23.10",   "58.218.23.10", "202.173.10.2", "60.178.167.241",   "58.213.137.5", "58.38.165.221", "58.38.165.221",   "61.150.15.25", "58.45.82.76", "218.8.200.210", "59.33.24.233",   "60.176.240.196", "60.9.86.85", "60.51.114.120",   "60.51.114.120", "125.120.155.45", "219.140.61.180",   "219.140.61.180", "59.49.158.100", "59.49.158.100",   "58.218.23.10", "221.220.25.54", "222.71.176.119",   "220.168.115.124", "58.38.165.221", "218.3.251.246",   "58.213.137.5", "218.3.251.246", "121.33.219.235",   "222.130.195.225", "60.51.114.120", "218.3.251.246",   "219.140.61.180", "219.140.61.180", "125.120.155.45",   "60.9.97.186", "124.228.44.177", "218.19.2.195",   "222.70.225.180", "58.38.165.221", "58.38.165.221",   "60.168.67.99", "58.38.165.221", "58.38.165.221",   "61.29.214.76", "220.234.156.254", "60.51.114.120",   "60.51.114.120", "60.51.114.120", "222.168.148.111",   "117.24.28.13", "59.49.158.100", "60.209.253.61",   "61.150.15.83", "60.208.156.110", "124.227.192.131",   "125.120.155.90", "218.83.58.250", "60.191.89.102",   "222.71.176.119", "60.178.167.241", "60.208.111.203",   "222.74.231.66", "58.221.253.118", "122.89.146.55",   "60.51.114.120", "58.221.253.118", "59.49.158.100",   "218.10.158.162", "220.160.38.98", "124.227.192.131",   "219.245.44.214", "211.158.41.214", "219.245.44.185",   "218.0.113.43", "211.158.41.214", "218.68.82.73",   "125.120.144.14", "125.120.155.90", "60.171.169.251",   "124.78.165.8", "124.78.165.8", "218.22.186.125","202.98.224.68","218.21.40.190","218.202.208.0","58.18.118.0","218.21.68.175"};for (int i = 0; i < sip.length; i++) {//较详细的信息：
//          System.out.println(ipseeker.getAddress(sip[i]));//只打印国家省份信息:System.out.println(ipseeker.getCountry(sip[i]));}   }
}

2 IPEntry.java

/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma <stubma@163.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.worthtech.app.util.ip;/*** <pre>* 一条IP范围记录，不仅包括国家和区域，也包括起始IP和结束IP* </pre>* * @author luma*/
public class IPEntry {public String beginIp;public String endIp;public String country;public String area;/*** 构造函数*/public IPEntry() {beginIp = endIp = country = area = "";}
}

3 Util.java

package com.worthtech.app.util.ip;import java.io.UnsupportedEncodingException;
import java.util.StringTokenizer;import org.apache.log4j.Level;import  com.showtime.util.LogFactory;/*** 工具类，提供一些方便的方法*/
public class Util {private static StringBuilder sb = new StringBuilder();/*** 从ip的字符串形式得到字节数组形式* @param ip 字符串形式的ip* @return 字节数组形式的ip*/public static byte[] getIpByteArrayFromString(String ip) {byte[] ret = new byte[4];StringTokenizer st = new StringTokenizer(ip, ".");try {ret[0] = (byte)(Integer.parseInt(st.nextToken()) & 0xFF);ret[1] = (byte)(Integer.parseInt(st.nextToken()) & 0xFF);ret[2] = (byte)(Integer.parseInt(st.nextToken()) & 0xFF);ret[3] = (byte)(Integer.parseInt(st.nextToken()) & 0xFF);} catch (Exception e) {LogFactory.log("从ip的字符串形式得到字节数组形式报错", Level.ERROR, e);}return ret;}/*** @param ip ip的字节数组形式* @return 字符串形式的ip*/public static String getIpStringFromBytes(byte[] ip) {sb.delete(0, sb.length());sb.append(ip[0] & 0xFF);sb.append('.');    sb.append(ip[1] & 0xFF);sb.append('.');       sb.append(ip[2] & 0xFF);sb.append('.');       sb.append(ip[3] & 0xFF);return sb.toString();}/*** 根据某种编码方式将字节数组转换成字符串* @param b 字节数组* @param offset 要转换的起始位置* @param len 要转换的长度* @param encoding 编码方式* @return 如果encoding不支持，返回一个缺省编码的字符串*/public static String getString(byte[] b, int offset, int len, String encoding) {try {return new String(b, offset, len, encoding);} catch (UnsupportedEncodingException e) {return new String(b, offset, len);}}
}

网上还有许多人在改进它，可以参照：

http://code.google.com/p/lumaqq4j/source/browse/trunk/lumaqq/src/edu/tsinghua/lumaqq/IPSeeker.java?r=4

http://kenai.com/projects/ipseeker/sources/subversion/show/IPSeeker

等，可以在google上输入ipseeker.java搜索它们来，改进上也没改进多少，可能就是一些小的地方。

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