java 根据IP地址获取省市区

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

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
*/
public String getAddresses(String content, String encodingString) {
// 这里调用pconline的接口
String urlStr = "http://whois.pconline.sscom.cn/ipJson.jsp";
// 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
int startIndex = returnStr.indexOf("\"pro");
int endIndex = returnStr.indexOf(",\"addr");
if (startIndex > 0 && endIndex > 0 && endIndex > startIndex) {
returnStr = returnStr.substring(startIndex, endIndex);
returnStr = returnStr.replaceAll("\"", "").replace("pro:", "")
.replace("city:", "").replace("region:", "");
}
}
return returnStr;
}

/**
* @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(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;
}

// 测试
public static void main(String[] args) {
AddressUtils addressUtils = new AddressUtils();
// 测试ip
String ip = "219.136.134.157";
String address = addressUtils.getAddresses("ip=" + ip, "gbk");
System.out.println(address);
// 输出结果为：广东省,广州市,越秀区
}
}


乱码解决：
/**
* 根据坐标泛解析出地址
*
* @param itude
* @return
* @throws Exception
*/
private static String getLocationAds(String latitude, String longitude) {
JSONObject json = new JSONObject();
String resultString = "";
/** 这里采用get方法，直接将参数加到URL上 */
String urlString = String.format(
" http://maps.google.cn/maps/geo?key=abcdefg&q=%s,%s",
latitude, longitude);
try {
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
if (conn.getResponseCode() != 200) {
System.out.println("链接失败！");
return "";
}
BufferedReader buffReader = new BufferedReader(new InputStreamReader(
conn.getInputStream(),"utf-8"));
StringBuffer strBuff = new StringBuffer();
String result = null;
while ((result = buffReader.readLine()) != null) {
strBuff.append(result);
}
resultString = strBuff.toString();
System.out.println(resultString);

} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return resultString;

}
public static List<String> pcqLocationAds(String latitude, String longitude)
{
String province;// 省
String cityName;// 市
String region;// 地区
JSONObject data;
List<String> li = new ArrayList<String>();
try
{
String str= ResultUtil.getLocationAds(latitude, longitude);
data = new JSONObject(str);
data = ((JSONArray) data.get("Placemark")).getJSONObject(0);
data = (JSONObject) data.get("AddressDetails");
data = (JSONObject) data.get("Country");
data = (JSONObject) data.get("AdministrativeArea");
province = data.get("AdministrativeAreaName").toString();
data = (JSONObject) data.get("Locality");
cityName = data.get("LocalityName").toString();
data = (JSONObject) data.get("DependentLocality");
region = data.get("DependentLocalityName").toString();
li.add(province);
li.add(cityName);
li.add(region);
System.out.println(province);
System.out.println(cityName);
System.out.println(region);
}
catch (Exception e)
{
e.printStackTrace();
}
return li;
}
public static void main(String[] args) {
String s= ResultUtil.getLocationAds("34.221379", "108.915555");

}