根据外网ip地址定位用户所在城市

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package com.henu.controller;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;import net.sf.json.JSONObject;import org.junit.Test;/**
* 根据IP地址获取详细的地域信息
* 淘宝API : http://ip.taobao.com/service/getIpInfo.php?ip=218.192.3.42
* 新浪API : http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=218.192.3.42
* @File AddressUtils.java
* @Package org.gditc.weicommunity.util
* @Description TODO
* @Copyright Copyright © 2014
* @Site https://github.com/Cryhelyxx
* @Blog http://blog.csdn.net/Cryhelyxx
* @Email cryhelyxx@gmail.com
* @Company GDITC
* @Date 2014年11月6日下午1:46:37
* @author Cryhelyxx
* @version 1.0
*/
public class AddressUtils {
/**
*
* @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 static String getAddresses(String content, String encodingString)
throws UnsupportedEncodingException {
// 这里调用淘宝API
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 = getResult(urlStr, content, encodingString);
if (returnStr != null) {
// 处理返回的省市区信息
System.out.println("(1) unicode转换成中文前的returnStr : " + returnStr);
returnStr = decodeUnicode(returnStr);
System.out.println("(2) unicode转换成中文后的returnStr : " + returnStr);
String[] temp = returnStr.split(",");
if(temp.length<3){
return "0";//无效IP，局域网测试
}
return returnStr;
}
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 static 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(2000);// 设置连接超时时间，单位毫秒
connection.setReadTimeout(2000);// 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();
}
// 测试
public static void main(String[] args) {
AddressUtils addressUtils = new AddressUtils();
// 测试ip 219.136.134.157 中国=华南=广东省=广州市=越秀区=电信
String ip = "122.49.20.247";
String address = "";
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
} @Test
public void getAddressByIp() throws Exception {
// 参数ip
String ip = "219.136.134.157";
// json_result用于接收返回的json数据
String json_result = null;
try {
json_result = AddressUtils.getAddresses("ip=" + ip, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
JSONObject json = JSONObject.fromObject(json_result);
System.out.println("json数据： " + json);
String country = JSONObject.fromObject(json.get("data")).get("country").toString();
String region = JSONObject.fromObject(json.get("data")).get("region").toString();
String city = JSONObject.fromObject(json.get("data")).get("city").toString();
String county = JSONObject.fromObject(json.get("data")).get("county").toString();
String isp = JSONObject.fromObject(json.get("data")).get("isp").toString();
String area = JSONObject.fromObject(json.get("data")).get("area").toString();
System.out.println("国家： " + country);
System.out.println("地区： " + area);
System.out.println("省份: " + region);
System.out.println("城市： " + city);
System.out.println("区/县： " + county);
System.out.println("互联网服务提供商： " + isp); String address = country + "/";
address += region + "/";
address += city + "/";
address += county;
System.out.println(address);
}
}

运行结果：

(1) unicode转换成中文前的returnStr : {"code":0,"data":{"country":"\u4e2d\u56fd","country_id":"CN","area":"\u534e\u5357","area_id":"800000","region":"\u5e7f\u4e1c\u7701","region_id":"440000","city":"\u5e7f\u5dde\u5e02","city_id":"440100","county":"\u8d8a\u79c0\u533a","county_id":"440104","isp":"\u7535\u4fe1","isp_id":"100017","ip":"219.136.134.157"}}
(2) unicode转换成中文后的returnStr : {"code":0,"data":{"country":"中国","country_id":"CN","area":"华南","area_id":"800000","region":"广东省","region_id":"440000","city":"广州市","city_id":"440100","county":"越秀区","county_id":"440104","isp":"电信","isp_id":"100017","ip":"219.136.134.157"}}
json数据： {"code":0,"data":{"country":"中国","country_id":"CN","area":"华南","area_id":"800000","region":"广东省","region_id":"440000","city":"广州市","city_id":"440100","county":"越秀区","county_id":"440104","isp":"电信","isp_id":"100017","ip":"219.136.134.157"}}
国家：中国
地区：华南
省份: 广东省
城市：广州市
区/县：越秀区
互联网服务提供商：电信
中国/广东省/广州市/越秀区