IP工具类——IpAddress.java

根据IP地址获取详细的地域信息，也可通过 http://whois.pconline.com.cn/ 获取地址信息。

源码如下：(点击下载  IpAddress.java)

 import java.io.BufferedReader;
 import java.io.DataOutputStream;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.UnsupportedEncodingException;
 import java.net.HttpURLConnection;
 import java.net.URL;

 /**
  * 根据IP地址获取详细的地域信息
  *      也可通过 http://whois.pconline.com.cn/ 获取地址信息
  *
  * 作者: zhoubang
  * 日期：2015年8月7日 上午10:25:00
  */
 public class IpAddress {

     /**
      * 获取IP所在地址
      *
      * 作者: zhoubang
      * 日期：2015年8月7日 上午10:26:57
      * @param content
      * @param encodingString
      * @return
      * @throws UnsupportedEncodingException
      */
     public String getAddresses(String content, String encodingString)
             throws UnsupportedEncodingException {
         // 淘宝的接口
         String urlStr = "http://ip.taobao.com/service/getIpInfo.php";
         String returnStr = this.getResult(urlStr, content, encodingString);
         if (returnStr != null) {
             // 处理返回的省市区信息
             System.out.println(returnStr);
             String[] temp = returnStr.split(",");
             if (temp.length < 3) {
                 return "0";// 无效IP，局域网测试
             }
             String region = (temp[5].split(":"))[1].replaceAll("\"", "");
             region = decodeUnicode(region);// 省份

             String country = "";
             String area = "";
             // String region = "";
             String city = "";
             String county = "";
             String isp = "";
             for (int i = 0; i < temp.length; i++) {
                 switch (i) {
                 case 1:
                     country = (temp[i].split(":"))[2].replaceAll("\"", "");
                     country = decodeUnicode(country);// 国家
                     break;
                 case 3:
                     area = (temp[i].split(":"))[1].replaceAll("\"", "");
                     area = decodeUnicode(area);// 地区
                     break;
                 case 5:
                     region = (temp[i].split(":"))[1].replaceAll("\"", "");
                     region = decodeUnicode(region);// 省份
                     break;
                 case 7:
                     city = (temp[i].split(":"))[1].replaceAll("\"", "");
                     city = decodeUnicode(city);// 市区
                     break;
                 case 9:
                     county = (temp[i].split(":"))[1].replaceAll("\"", "");
                     county = decodeUnicode(county);// 地区
                     break;
                 case 11:
                     isp = (temp[i].split(":"))[1].replaceAll("\"", "");
                     isp = decodeUnicode(isp); // ISP公司
                     break;
                 }
             }

             System.out.println(country + "=" + area + "=" + region + "=" + city + "=" + county + "=" + isp);
             return region;
         }
         return null;
     }

     /**
      * 请求接口
      *
      * 作者: zhoubang
      * 日期：2015年8月7日 上午10:27:45
      * @param urlStr
      * @param content
      * @param encoding
      * @return
      */
     private String getResult(String urlStr, String content, String encoding) {
         URL url = null;
         HttpURLConnection connection = null;
         try {
             url = new URL(urlStr);
             connection = (HttpURLConnection) url.openConnection();// 新建连接实例
             connection.setConnectTimeout(10000);// 设置连接超时时间，单位毫秒
             connection.setReadTimeout(10000);// 设置读取数据超时时间，单位毫秒
             connection.setDoOutput(true);// 是否打开输出流 true|false
             connection.setDoInput(true);// 是否打开输入流true|false
             connection.setRequestMethod("POST");// 提交方法POST|GET
             connection.setUseCaches(false);// 是否缓存true|false
             connection.connect();// 打开连接端口
             DataOutputStream out = new DataOutputStream(connection.getOutputStream());// 打开输出流往对端服务器写数据
             out.writeBytes(content);// 写数据,也就是提交你的表单 name=xxx&pwd=xxx
             out.flush();// 刷新
             out.close();// 关闭输出流
             BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), encoding));
             StringBuffer buffer = new StringBuffer();
             String line = "";
             while ((line = reader.readLine()) != null) {
                 buffer.append(line);
             }
             reader.close();
             return buffer.toString();
         } catch (IOException e) {
             e.printStackTrace();
         } finally {
             if (connection != null) {
                 connection.disconnect();// 关闭连接
             }
         }
         return null;
     }

     /**
      * unicode 转换成 中文
      *
      * @author fanhui 2007-3-15
      * @param theString
      * @return
      */
     public static String decodeUnicode(String theString) {
         char aChar;
         int len = theString.length();
         StringBuffer outBuffer = new StringBuffer(len);
         for (int x = 0; x < len;) {
             aChar = theString.charAt(x++);
             if (aChar == '\\') {
                 aChar = theString.charAt(x++);
                 if (aChar == 'u') {
                     int value = 0;
                     for (int i = 0; i < 4; i++) {
                         aChar = theString.charAt(x++);
                         switch (aChar) {
                         case '0':
                         case '1':
                         case '2':
                         case '3':
                         case '4':
                         case '5':
                         case '6':
                         case '7':
                         case '8':
                         case '9':
                             value = (value << 4) + aChar - '0';
                             break;
                         case 'a':
                         case 'b':
                         case 'c':
                         case 'd':
                         case 'e':
                         case 'f':
                             value = (value << 4) + 10 + aChar - 'a';
                             break;
                         case 'A':
                         case 'B':
                         case 'C':
                         case 'D':
                         case 'E':
                         case 'F':
                             value = (value << 4) + 10 + aChar - 'A';
                             break;
                         default:
                             throw new IllegalArgumentException("Malformed      encoding.");
                         }
                     }
                     outBuffer.append((char) value);
                 } else {
                     if (aChar == 't') {
                         aChar = '\t';
                     } else if (aChar == 'r') {
                         aChar = '\r';
                     } else if (aChar == 'n') {
                         aChar = '\n';
                     } else if (aChar == 'f') {
                         aChar = '\f';
                     }
                     outBuffer.append(aChar);
                 }
             } else {
                 outBuffer.append(aChar);
             }
         }
         return outBuffer.toString();
     }

     // 测试
     public static void main(String[] args) {
         IpAddress addressUtils = new IpAddress();
         String ip = "27.54.227.84";
         String address = "";
         try {
             address = addressUtils.getAddresses("ip=" + ip, "utf-8");
         } catch (UnsupportedEncodingException e) {
             e.printStackTrace();
         }
         System.out.println(address);
         // 输出结果为：中国=华东=安徽省=滁州市==
         // 安徽省
     }
 }