java获取ip和地区

String s = HttpUtil.sendPost("http://pv.sohu.com/cityjson");
JSONObject jsonObject = JSONObject.parseObject(s.substring(s.indexOf("{"), s.indexOf("}") + 1));
jsonObject.get("cip");
jsonObject.get("cname");

/**
 * Gets ip.
 *
 * @return the ip
 */
public static String getIp() {
 String ip = null;
 try {
 String chinaz = "http://ip.chinaz.com/?nitmdw=xbnj02";
 StringBuilder builder = new StringBuilder();
 String temp;
 HttpURLConnection urlConnection = (HttpURLConnection) new URL(chinaz).openConnection();
 BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), StandardCharsets.UTF_8));
 while ((temp = reader.readLine()) != null) {
 builder.append(temp).append("
");
 }
 reader.close();
 Pattern p = Pattern.compile(S);
 Matcher m = p.matcher(builder.toString());
 if (m.find()) {
 String ipStr = m.group(1);
 ip = ipStr;
 }
 } catch (IOException e) {
 logger.error("", e);
 }
 return ip;
}

package com.zhuoan.im.webapp.common.util;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
/**
 * @author weixiang.wu
 */
public class HttpUtil {
 private static final CloseableHttpClient httpclient = HttpClients.createDefault();
 /**
 * 发送HttpGet请求
 * @param url
 * @return
 */
 public static String sendGet(String url) {
 HttpGet httpget = new HttpGet(url);
 CloseableHttpResponse response = null;
 try {
 response = httpclient.execute(httpget);
 } catch (IOException e1) {
 e1.printStackTrace();
 }
 String result = null;
 try {
 HttpEntity entity = response.getEntity();
 if (entity != null) {
 result = EntityUtils.toString(entity);
 }
 } catch (ParseException | IOException e) {
 e.printStackTrace();
 } finally {
 try {
 response.close();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }
 return result;
 }
 /**
 * 发送HttpPost请求，参数为map
 * @param url
 * @param map
 * @return
 */
 public static String sendPost(String url, Map<String, String> map) {
 List<NameValuePair> formparams = new ArrayList<NameValuePair>();
 for (Map.Entry<String, String> entry : map.entrySet()) {
 formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
 }
 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, Consts.UTF_8);
 HttpPost httppost = new HttpPost(url);
 httppost.setEntity(entity);
 CloseableHttpResponse response = null;
 try {
 response = httpclient.execute(httppost);
 } catch (IOException e) {
 e.printStackTrace();
 }
 HttpEntity entity1 = response.getEntity();
 String result = null;
 try {
 result = EntityUtils.toString(entity1);
 } catch (ParseException | IOException e) {
 e.printStackTrace();
 }
 return result;
 }
 /**
 * 发送不带参数的HttpPost请求
 * @param url
 * @return
 */
 public static String sendPost(String url) {
 HttpPost httppost = new HttpPost(url);
 CloseableHttpResponse response = null;
 try {
 response = httpclient.execute(httppost);
 } catch (IOException e) {
 e.printStackTrace();
 }
 HttpEntity entity = response.getEntity();
 String result = null;
 try {
 result = EntityUtils.toString(entity);
 } catch (ParseException | IOException e) {
 e.printStackTrace();
 }
 return result;
 }
}