amyhang
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发表于:2008-5-9 08:35
标题：用来读取QQwry.dat的java代码
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从lumaQQ中抄来的。：）
Utils.java
代码:/*
* Created on 2004-8-4
*
*/
package com.bupticet.ip;
import java.io.UnsupportedEncodingException;
/**
* @author LJ-silver
*/
public class Utils {
/**
* 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];
java.util.StringTokenizer st = new java.util.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) {
System.out.println(e.getMessage());
}
return ret;
}
/**
* 对原始字符串进行编码转换，如果失败，返回原始的字符串
* @param s 原始字符串
* @param srcEncoding 源编码方式
* @param destEncoding 目标编码方式
* @return 转换编码后的字符串，失败返回原始字符串
*/
public static String getString(String s, String srcEncoding, String destEncoding) {
try {
return new String(s.getBytes(srcEncoding), destEncoding);
} catch (UnsupportedEncodingException e) {
return s;
}
}
/**
* 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 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, String encoding) {
try {
return new String(b, encoding);
} catch (UnsupportedEncodingException e) {
return new String(b);
}
}
/**
* 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);
}
}
/**
* @param ip ip的字节数组形式
* @return 字符串形式的ip
*/
public static String getIpStringFromBytes(byte[] ip) {
StringBuffer sb = new StringBuffer();
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();
}
}
代码:/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma
*
* 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.bupticet.ip;
/**
*
* 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
*
*
* @author 马若劼
*/
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 = "";
}
public String toString(){
return this.area+" "+this.country+" IP范围:"+this.beginIp+"-"+this.endIp;
}
}
代码:/*
* LumaQQ - Java QQ Client
*
* Copyright (C) 2004 luma
*
* 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.bupticet.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;
/**
*
* 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. "结束地址/国家/区域"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. "起始地址/结束地址偏移"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
*
*
* @author 马若劼
*/
public class IPSeeker {
/**
*
* 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
*
*
* @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 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 IPLocation loc;
private byte[] buf;
private byte[] b4;
private byte[] b3;
/**
* 私有构造函数
*/
private IPSeeker() {
ipCache = new Hashtable();
loc = new IPLocation();
buf = new byte[100];
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 (b2 & 0xFF)) // 比较是否大于
return 1;
else if((b1 ^ b2) == 0)// 判断是否相等
return 0;
else
return -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)
i = m;
else if(r >= 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ip
ipFile.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);
} else
loc.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ip
mbb.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);
} else
loc.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";
else
return readString(areaOffset);
} else
return 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";
else
return readString(areaOffset);
} else
return 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 = ipFile.readByte(); buf != 0; buf[++i] = ipFile.readByte());
if(i != 0)
return Utils.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 = mbb.get(); buf != 0; buf[++i] = mbb.get());
if(i != 0)
return Utils.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();
}
}［注意：这个class和上面的３个class的package不同，请对应修改。］
代码:/**
* @author LJ-silver
*/
public class Test {
public static void main(String[] args) {
com.ljsilver.ip2address.IPSeeker seeker = com.ljsilver.ip2address.IPSeeker.getInstance();
if(args.length==2){
if("ip".equals(args[0])){
System.out.println(args[0]+"的所在地址是:"+seeker.getAddress(args[1]));
}else if("address".equals(args[0])){
List a = seeker.getIPEntries(args[1]);
System.out.println(args[0]+":");
for(int i=0;i
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