自动获取本地IP，通过IP来获取详细的地域信息

package com.test;


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.InetAddress;
import java.net.URL;
import java.net.UnknownHostException;


import com.sun.jmx.snmp.InetAddressAcl;


/**
 * 根据IP地址获取详细的地域信息
 * 
 * @project:Test
 * @class:IpAddress.java
 * @author:xhy 
 * @date：2016-04-05 11:16
 */
public class IpAddress {
/**
* 
* @param content
*            请求的参数 格式为：name=xxx&pwd=xxx
* @param encoding
*            服务器端请求编码。如GBK,UTF-8等
* @return
* @throws UnsupportedEncodingException
*/
public String getAddresses(String content, String encodingString)
throws UnsupportedEncodingException {
// 这里调用pconline的接口
String urlStr = "http://ip.taobao.com/service/getIpInfo.php";
// 从http://whois.pconline.com.cn取得IP所在的省市区信息
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;
}


/**
* @param urlStr
*            请求的地址
* @param content
*            请求的参数 格式为：name=xxx&pwd=xxx
* @param encoding
*            服务器端请求编码。如GBK,UTF-8等
* @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));// 往对端写完数据对端服务器返回数据
// ,以BufferedReader流来读取
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();
}


public static String getIpAddress(InetAddress netAddress){
if(null == netAddress){  
            return null;  
        }  
        String ip = netAddress.getHostAddress(); //get the ip address  
        return ip;  
}


// 测试
public static void main(String[] args) {
//获取当前定义的获取IP工具类
IpAddress addressUtils = new IpAddress();
String ip = "";//定义IP地址
// 1.测试ip 219.136.134.157 中国=华南=广东省=广州市=越秀区=电信,已经定义好ip
// ip = "61.178.19.110";
//2.使用InetAddress.getHostAddress;来获取IP地址
InetAddress netAddress = null;
try {
netAddress = InetAddress.getLocalHost();
} catch (UnknownHostException e1) {
// TODO Auto-generated catch block

e1.printStackTrace();
}
ip = getIpAddress( netAddress);

System.out.println(ip);
String address = "";//当定义一个字符串时，使用空字符串来将其初始化
try {
address = addressUtils.getAddresses("ip=" + ip, "utf-8");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(address);
// 输出结果为：广东省,广州市,越秀区
}
}