java通过免费接口获取ip地址的服务商信息

public class YzcPattern {
/**
* ip地址接口
*/
private final static String ipurl ="http://ip.taobao.com/service/getIpInfo.php?ip=";

/**
* 判断ip
* @param text
* @return
*/
public static boolean ipCheck(String text) {
if (text != null && !text.isEmpty()) {
// 定义正则表达式
String regex = "^(1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|[1-9])\\."
+ "(1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)\\."
+ "(1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)\\."
+ "(1\\d{2}|2[0-4]\\d|25[0-5]|[1-9]\\d|\\d)$";
// 判断ip地址是否与正则表达式匹配
if (text.matches(regex)) {
return true;
// 返回判断信息
//return text + "\n是一个合法的IP地址！";
} else {
return false;
// 返回判断信息
//return text + "\n不是一个合法的IP地址！";
}
}
return false;
}


/**
* 读取IP的
* @param getAccessTokenUrl
* @return
*/
public static String getAuth(String getAccessTokenUrl) {
HttpURLConnection connection = null;
try {
URL realUrl = new URL(getAccessTokenUrl);
// 打开和URL之间的连接
connection = (HttpURLConnection) realUrl.openConnection();
connection.setRequestProperty("User-Agent", Const.UserAgent);
connection.setRequestMethod("GET");
connection.setRequestProperty("Charsert", "UTF-8"); //设置请求编码
connection.setRequestProperty("Content-Type", 
"application/json"); 
connection.connect();
// 定义 BufferedReader输入流来读取URL的响应
BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
String result = "";
String line;
while ((line = in.readLine()) != null) {
result += line;
}
/**
* 返回结果示例
*/
return result;
} catch (Exception e) {
e.printStackTrace();
}finally{
if(connection!=null){
connection.disconnect();
}
}
return null;
}

public static void main(String[] args) throws Exception {
String ip="您的ip";
boolean bo = YzcPattern.ipCheck(ip);
if(bo){
String url = ipurl+ip;
String result = getAuth(url);
}

//获得的结果 {"code":0,"data":{"ip":"58.87.124.194","country":"中国","area":"","region":"天津","city":"天津","county":"XX","isp":"电信","country_id":"CN","area_id":"","region_id":"120000","city_id":"120100","county_id":"xx","isp_id":"100017"}}
}
}