import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

public class IdentityCheck {
/**
* @param httpUrl
* :請求介面
* @param identity
* :身份證號
* @return 返回結果
*/
public boolean Check(String identity){
BufferedReader reader = null;
String result = null;
StringBuffer sbf = new StringBuffer();
String httpUrl = “

    try {
        URL url = new URL(httpUrl);
        HttpURLConnection connection = (HttpURLConnection) url
                .openConnection();
        connection.setRequestMethod("POST");
        // 填入apikey到HTTP header
        connection.setRequestProperty("apikey", "這裡填在百度獲取的apikey");
        connection.connect();
        InputStream is = connection.getInputStream();
        reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        String strRead = null;
        while ((strRead = reader.readLine()) != null) {
            sbf.append(strRead);
            sbf.append("\r\n");
        }
        reader.close();

        result = sbf.toString(); //查詢結果是json返回

       /* JSON返回示例 :
        {
                "errNum": 0,
                "retMsg": "success",
                "retData": {
                "sex": "M", //M-男，F-女，N-未知
                "birthday": "1987-04-20", //出生日期
                "address": "湖北省孝感市漢川市" //身份證歸屬地 市/縣
                  }
        }*/
        JsonParser jP = new JsonParser();
        JsonObject jobj=jP.parse(result).getAsJsonObject(); //解析資料
        String errNum = jobj.get("errNum").getAsString();
        if(errNum.equals("0")){
            //身份證合法返回true
            return true; 
        }else { 
            //不合法返回false
            return false; 
        }

    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }

}
 

}