1、百度搜索ip，提取ip接口

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https://sp0.baidu.com/8aQDcjqpAAV3otqbppnN2DJv/api.php?query=IP地址&co=&resource_id=6006&t=1566808140314&ie=utf8&oe=gbk&format=json&tn=baidu

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2、使用qqwry.dat

鏈接：https://pan.baidu.com/s/1H6Vj_Pid_rrHY0-HqH00YQ?
提取碼：zsva?

工具類：

import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.RandomAccessFile; import java.nio.ByteOrder; import java.nio.MappedByteBuffer; import java.nio.channels.FileChannel; import java.nio.channels.FileChannel.MapMode; import java.util.ArrayList; import java.util.Hashtable; import java.util.List;public class IPSeeker {private static String IP_FILE;private static final int IP_RECORD_LENGTH = 7;private static final byte AREA_FOLLOWED = 1;private static final byte NO_AREA = 2;private Hashtable ipCache = new Hashtable();private RandomAccessFile ipFile;private MappedByteBuffer mbb;private static IPSeeker instance = new IPSeeker();private long ipBegin;private long ipEnd;private IPSeeker.IPLocation loc = new IPSeeker.IPLocation();private byte[] buf = new byte[100];private byte[] b4 = new byte[4];private byte[] b3 = new byte[3];private IPSeeker() {try {InputStream ipFileStream = IPSeeker.class.getResourceAsStream("/qqwry.dat");this.ipFile = toRandomAccessFile(ipFileStream);} catch (Exception var3) {var3.printStackTrace();System.out.println(IP_FILE);System.out.println("IP地址信息文件沒有找到，IP顯示功能將無法使用");this.ipFile = null;}if(this.ipFile != null) {try {this.ipBegin = this.readLong4(0L);this.ipEnd = this.readLong4(4L);if(this.ipBegin == -1L || this.ipEnd == -1L) {this.ipFile.close();this.ipFile = null;}} catch (IOException var4) {System.out.println("IP地址信息文件格式有錯(cuò)誤，IP顯示功能將無法使用");this.ipFile = null;}}}public static RandomAccessFile toRandomAccessFile(InputStream is) throws IOException {RandomAccessFile raf = new RandomAccessFile(File.createTempFile("isc", "tmp"), "rwd");byte[] buffer = new byte[2048];boolean var3 = false;int tmp;while((tmp = is.read(buffer)) != -1) {raf.write(buffer, 0, tmp);}raf.seek(0L);return raf;}public static IPSeeker getInstance() {return instance;}public List getIPEntriesDebug(String s) {List ret = new ArrayList();long endOffset = this.ipEnd + 4L;for(long offset = this.ipBegin + 4L; offset <= endOffset; offset += 7L) {long temp = this.readLong3(offset);if(temp != -1L) {IPSeeker.IPLocation loc = this.getIPLocation(temp);if(loc.country.indexOf(s) != -1 || loc.area.indexOf(s) != -1) {IPEntry entry = new IPEntry();entry.country = loc.country;entry.area = loc.area;this.readIP(offset - 4L, this.b4);entry.beginIp = Utils.getIpStringFromBytes(this.b4);this.readIP(temp, this.b4);entry.endIp = Utils.getIpStringFromBytes(this.b4);ret.add(entry);}}}return ret;}public List getIPEntries(String s) {ArrayList ret = new ArrayList();try {if(this.mbb == null) {FileChannel fc = this.ipFile.getChannel();this.mbb = fc.map(MapMode.READ_ONLY, 0L, this.ipFile.length());this.mbb.order(ByteOrder.LITTLE_ENDIAN);}int endOffset = (int)this.ipEnd;for(int offset = (int)this.ipBegin + 4; offset <= endOffset; offset += 7) {int temp = this.readInt3(offset);if(temp != -1) {IPSeeker.IPLocation loc = this.getIPLocation(temp);if(loc.country.indexOf(s) != -1 || loc.area.indexOf(s) != -1) {IPEntry entry = new IPEntry();entry.country = loc.country;entry.area = loc.area;this.readIP(offset - 4, this.b4);entry.beginIp = Utils.getIpStringFromBytes(this.b4);this.readIP(temp, this.b4);entry.endIp = Utils.getIpStringFromBytes(this.b4);ret.add(entry);}}}} catch (IOException var8) {System.out.println(var8.getMessage());}return ret;}private int readInt3(int offset) {this.mbb.position(offset);return this.mbb.getInt() & 16777215;}private int readInt3() {return this.mbb.getInt() & 16777215;}public String getCountry(byte[] ip) {if(this.ipFile == null) {return "錯(cuò)誤的IP數(shù)據(jù)庫文件";} else {String ipStr = Utils.getIpStringFromBytes(ip);IPSeeker.IPLocation loc;if(this.ipCache.containsKey(ipStr)) {loc = (IPSeeker.IPLocation)this.ipCache.get(ipStr);return loc.country;} else {loc = this.getIPLocation(ip);this.ipCache.put(ipStr, loc.getCopy());return loc.country;}}}public String getCountry(String ip) {return this.getCountry(Utils.getIpByteArrayFromString(ip));}public String getArea(byte[] ip) {if(this.ipFile == null) {return "錯(cuò)誤的IP數(shù)據(jù)庫文件";} else {String ipStr = Utils.getIpStringFromBytes(ip);IPSeeker.IPLocation loc;if(this.ipCache.containsKey(ipStr)) {loc = (IPSeeker.IPLocation)this.ipCache.get(ipStr);return loc.area;} else {loc = this.getIPLocation(ip);this.ipCache.put(ipStr, loc.getCopy());return loc.area;}}}public String getArea(String ip) {return this.getArea(Utils.getIpByteArrayFromString(ip));}private IPSeeker.IPLocation getIPLocation(byte[] ip) {IPSeeker.IPLocation info = null;long offset = this.locateIP(ip);if(offset != -1L) {info = this.getIPLocation(offset);}if(info == null) {info = new IPSeeker.IPLocation();info.country = "未知國家";info.area = "未知地區(qū)";}return info;}private long readLong4(long offset) {long ret = 0L;try {this.ipFile.seek(offset);ret |= (long)(this.ipFile.readByte() & 255);ret |= (long)(this.ipFile.readByte() << 8 & '\uff00');ret |= (long)(this.ipFile.readByte() << 16 & 16711680);ret |= (long)(this.ipFile.readByte() << 24 & -16777216);return ret;} catch (IOException var6) {return -1L;}}private long readLong3(long offset) {long ret = 0L;try {this.ipFile.seek(offset);this.ipFile.readFully(this.b3);ret |= (long)(this.b3[0] & 255);ret |= (long)(this.b3[1] << 8 & '\uff00');ret |= (long)(this.b3[2] << 16 & 16711680);return ret;} catch (IOException var6) {return -1L;}}private long readLong3() {long ret = 0L;try {this.ipFile.readFully(this.b3);ret |= (long)(this.b3[0] & 255);ret |= (long)(this.b3[1] << 8 & '\uff00');ret |= (long)(this.b3[2] << 16 & 16711680);return ret;} catch (IOException var4) {return -1L;}}private void readIP(long offset, byte[] ip) {try {this.ipFile.seek(offset);this.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 var5) {System.out.println(var5.getMessage());}}private void readIP(int offset, byte[] ip) {this.mbb.position(offset);this.mbb.get(ip);byte temp = ip[0];ip[0] = ip[3];ip[3] = temp;temp = ip[1];ip[1] = ip[2];ip[2] = temp;}private int compareIP(byte[] ip, byte[] beginIp) {for(int i = 0; i < 4; ++i) {int r = this.compareByte(ip[i], beginIp[i]);if(r != 0) {return r;}}return 0;}private int compareByte(byte b1, byte b2) {return (b1 & 255) > (b2 & 255)?1:((b1 ^ b2) == 0?0:-1);}private long locateIP(byte[] ip) {long m = 0L;this.readIP(this.ipBegin, this.b4);int r = this.compareIP(ip, this.b4);if(r == 0) {return this.ipBegin;} else if(r < 0) {return -1L;} else {long i = this.ipBegin;long j = this.ipEnd;while(i < j) {m = this.getMiddleOffset(i, j);this.readIP(m, this.b4);r = this.compareIP(ip, this.b4);if(r > 0) {i = m;} else {if(r >= 0) {return this.readLong3(m + 4L);}if(m == j) {j -= 7L;m = j;} else {j = m;}}}m = this.readLong3(m + 4L);this.readIP(m, this.b4);r = this.compareIP(ip, this.b4);if(r <= 0) {return m;} else {return -1L;}}}private long getMiddleOffset(long begin, long end) {long records = (end - begin) / 7L;records >>= 1;if(records == 0L) {records = 1L;}return begin + records * 7L;}private IPSeeker.IPLocation getIPLocation(long offset) {try {this.ipFile.seek(offset + 4L);byte b = this.ipFile.readByte();if(b == 1) {long countryOffset = this.readLong3();this.ipFile.seek(countryOffset);b = this.ipFile.readByte();if(b == 2) {this.loc.country = this.readString(this.readLong3());this.ipFile.seek(countryOffset + 4L);} else {this.loc.country = this.readString(countryOffset);}this.loc.area = this.readArea(this.ipFile.getFilePointer());} else if(b == 2) {this.loc.country = this.readString(this.readLong3());this.loc.area = this.readArea(offset + 8L);} else {this.loc.country = this.readString(this.ipFile.getFilePointer() - 1L);this.loc.area = this.readArea(this.ipFile.getFilePointer());}return this.loc;} catch (IOException var6) {return null;}}private IPSeeker.IPLocation getIPLocation(int offset) {this.mbb.position(offset + 4);byte b = this.mbb.get();if(b == 1) {int countryOffset = this.readInt3();this.mbb.position(countryOffset);b = this.mbb.get();if(b == 2) {this.loc.country = this.readString(this.readInt3());this.mbb.position(countryOffset + 4);} else {this.loc.country = this.readString(countryOffset);}this.loc.area = this.readArea(this.mbb.position());} else if(b == 2) {this.loc.country = this.readString(this.readInt3());this.loc.area = this.readArea(offset + 8);} else {this.loc.country = this.readString(this.mbb.position() - 1);this.loc.area = this.readArea(this.mbb.position());}return this.loc;}private String readArea(long offset) throws IOException {this.ipFile.seek(offset);byte b = this.ipFile.readByte();if(b != 1 && b != 2) {return this.readString(offset);} else {long areaOffset = this.readLong3(offset + 1L);return areaOffset == 0L?"未知地區(qū)":this.readString(areaOffset);}}private String readArea(int offset) {this.mbb.position(offset);byte b = this.mbb.get();if(b != 1 && b != 2) {return this.readString(offset);} else {int areaOffset = this.readInt3();return areaOffset == 0?"未知地區(qū)":this.readString(areaOffset);}}private String readString(long offset) {try {this.ipFile.seek(offset);int i = 0;for(this.buf[i] = this.ipFile.readByte(); this.buf[i] != 0; this.buf[i] = this.ipFile.readByte()) {++i;}if(i != 0) {return Utils.getString(this.buf, 0, i, "GBK");}} catch (IOException var4) {System.out.println(var4.getMessage());}return "";}private String readString(int offset) {try {this.mbb.position(offset);int i = 0;for(this.buf[i] = this.mbb.get(); this.buf[i] != 0; this.buf[i] = this.mbb.get()) {++i;}if(i != 0) {return Utils.getString(this.buf, 0, i, "GBK");}} catch (IllegalArgumentException var3) {System.out.println(var3.getMessage());}return "";}public String getAddress(String ip) {String country = this.getCountry(ip).equals(" CZ88.NET")?"":this.getCountry(ip);String area = this.getArea(ip).equals(" CZ88.NET")?"":this.getArea(ip);String address = country + " " + area;return address.trim();}private class IPLocation {public String country;public String area;public IPLocation() {this.country = this.area = "";}public IPSeeker.IPLocation getCopy() {IPSeeker.IPLocation ret = IPSeeker.this.new IPLocation();ret.country = this.country;ret.area = this.area;return ret;}} }

使用：

IPSeeker.getInstance().getCountry(ip);

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