diff --git a/tz/user/user-service/src/main/java/com/tz/platform/user/api/biz/ApiUserLoginBiz.java b/tz/user/user-service/src/main/java/com/tz/platform/user/api/biz/ApiUserLoginBiz.java
index 2b2be57..0a2f920 100644
--- a/tz/user/user-service/src/main/java/com/tz/platform/user/api/biz/ApiUserLoginBiz.java
+++ b/tz/user/user-service/src/main/java/com/tz/platform/user/api/biz/ApiUserLoginBiz.java
@@ -10,6 +10,7 @@ import com.tz.platform.repository.LoginLogDao;
 import com.tz.platform.repository.UserDao;
 import com.tz.platform.user.api.bo.UserLoginPasswordBO;
 import com.tz.platform.user.api.dto.UserLoginDTO;
+import com.tz.platform.user.chunzhen.IPSeeker;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.stereotype.Component;
@@ -77,6 +78,7 @@ public class ApiUserLoginBiz {
         loginLog.setLoginDate(new Date());
         loginLog.setClientType(clientType);
         loginLog.setLoginStatus(loginStatusEnum.getCode());
+        loginLog.setLocation( IPSeeker.getInstance().getAddress(ip));
         loginLogDao.save(loginLog);
     }
 }
diff --git a/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPEntry.java b/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPEntry.java
new file mode 100644
index 0000000..be25121
--- /dev/null
+++ b/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPEntry.java
@@ -0,0 +1,21 @@
+package com.tz.platform.user.chunzhen;
+
+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 = "";
+    }
+
+    @Override
+    public String toString() {
+        return this.area + "  " + this.country + "IP范围:" + this.beginIp + "-" + this.endIp;
+    }
+}
diff --git a/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPLocation.java b/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPLocation.java
new file mode 100644
index 0000000..bd14c9d
--- /dev/null
+++ b/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPLocation.java
@@ -0,0 +1,17 @@
+package com.tz.platform.user.chunzhen;
+
+public 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;
+    }
+}
diff --git a/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPSeeker.java b/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPSeeker.java
new file mode 100644
index 0000000..f26df30
--- /dev/null
+++ b/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/IPSeeker.java
@@ -0,0 +1,584 @@
+package com.tz.platform.user.chunzhen;
+
+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;
+
+public class IPSeeker {
+    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 <= 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IP
+                    readIP(offset - 4, b4);
+                    entry.beginIp = Utils.getIpStringFromBytes(b4);
+                    // 得到结束IP
+                    readIP(temp, b4);
+                    entry.endIp = Utils.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IP
+                        readIP(offset - 4, b4);
+                        entry.beginIp = Utils.getIpStringFromBytes(b4);
+                        // 得到结束IP
+                        readIP(temp, b4);
+                        entry.endIp = Utils.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 = Utils.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(Utils.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 = Utils.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(Utils.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;}
+        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) {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;
+                } else
+                 {j = m;}
+            } else
+             { return 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;}
+        else { return -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[i] = ipFile.readByte(); buf[i] != 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[i] = mbb.get(); buf[i] != 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();
+    }
+    public static void main(String args[]) {
+//        List list=IPSeeker.getInstance().getIPEntriesDebug("浙江省杭州市");
+//        System.out.println(list.size());
+        String address = IPSeeker.getInstance().getAddress("39.156.66.18");
+        System.out.println(address);
+    }
+}
diff --git a/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/Utils.java b/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/Utils.java
new file mode 100644
index 0000000..82c3c99
--- /dev/null
+++ b/tz/user/user-service/src/main/java/com/tz/platform/user/chunzhen/Utils.java
@@ -0,0 +1,42 @@
+package com.tz.platform.user.chunzhen;
+
+import java.io.UnsupportedEncodingException;
+import java.util.StringTokenizer;
+
+public class Utils {
+    private static StringBuilder sb = new StringBuilder();
+
+    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);
+        }
+    }
+    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);
+            e.printStackTrace();
+        }
+        return ret;
+    }
+
+    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();
+    }
+}