import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

import org.apache.log4j.Logger;

import net.sf.json.JSONObject;

public class JuHeChatUtil {

 static Logger logger = Logger.getLogger(JuHeChatUtil.class);

 public static final String DEF_CHATSET = "UTF-8";
 public static final int DEF_CONN_TIMEOUT = 30000;
 public static final int DEF_READ_TIMEOUT = 30000;
 public static String userAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36";
 // 配置您申請的KEY
 public static final String APPKEY = "2c*********************************";

 public static String get(String url) {
 return null;
 }

  public static void main(String[] args) {
 String a = JuHeChatUtil.getRequest1("今天天氣如何？");
 logger.info(a);
 }
 
 // 1.問答
 public static String getRequest1(String msg) {
 String result = null;
 String url = "http://op.juhe.cn/robot/index";// 請求接口地址
 Map params = new HashMap();// 請求參數
 params.put("key", APPKEY);// 您申請到的本接口專用的APPKEY
 params.put("info", msg);// 要發送給機器人的內容，不要超過30個字符
 params.put("dtype", "json");// 返回的數據的格式，json或xml，默認為json
 params.put("loc", "");// 地點，如北京中關村
 params.put("lon", "");// 經度，東經116.234632（小數點后保留6位），需要寫為116234632
 params.put("lat", "");// 緯度，北緯40.234632（小數點后保留6位），需要寫為40234632
 params.put("userid", "");// 1~32位，此userid針對您自己的每一個用戶，用于上下文的關聯

 try {
  result = net(url, params, "GET");
  logger.info(result);
  JSONObject object = JSONObject.fromObject(result);
  if (object.getInt("error_code") == 0) {
  result = object.getJSONObject("result").getString("text");
  } else {
  result = object.get("error_code") + ":" + object.get("reason");
  }
 } catch (Exception e) {
  e.printStackTrace();
 }
 return result;
 }

 // 2.數據類型
 public static void getRequest2() {
 String result = null;
 String url = "http://op.juhe.cn/robot/code";// 請求接口地址
 Map params = new HashMap();// 請求參數
 params.put("dtype", "");// 返回的數據格式，json或xml，默認json
 params.put("key", APPKEY);// 您申請本接口的APPKEY，請在應用詳細頁查詢

 try {
  result = net(url, params, "GET");
  JSONObject object = JSONObject.fromObject(result);
  if (object.getInt("error_code") == 0) {
  logger.info(object.get("result"));
  } else {
  logger.info(object.get("error_code") + ":" + object.get("reason"));
  }
 } catch (Exception e) {
  e.printStackTrace();
 }
 }

 /**
 *
 * @param strUrl 請求地址
 * @param params 請求參數
 * @param method 請求方法
 * @return 網絡請求字符串
 * @throws Exception
 */
 public static String net(String strUrl, Map params, String method) throws Exception {
 HttpURLConnection conn = null;
 BufferedReader reader = null;
 String rs = null;
 try {
  StringBuffer sb = new StringBuffer();
  if (method == null || method.equals("GET")) {
  strUrl = strUrl + "?" + urlencode(params);
  }
  URL url = new URL(strUrl);
  conn = (HttpURLConnection) url.openConnection();
  if (method == null || method.equals("GET")) {
  conn.setRequestMethod("GET");
  } else {
  conn.setRequestMethod("POST");
  conn.setDoOutput(true);
  }
  conn.setRequestProperty("User-agent", userAgent);
  conn.setUseCaches(false);
  conn.setConnectTimeout(DEF_CONN_TIMEOUT);
  conn.setReadTimeout(DEF_READ_TIMEOUT);
  conn.setInstanceFollowRedirects(false);
  conn.connect();
  if (params != null && method.equals("POST")) {
  try {
   DataOutputStream out = new DataOutputStream(conn.getOutputStream());
   out.writeBytes(urlencode(params));
  } catch (Exception e) {
   e.printStackTrace();
  }
  }
  InputStream is = conn.getInputStream();
  reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
  String strRead = null;
  while ((strRead = reader.readLine()) != null) {
  sb.append(strRead);
  }
  rs = sb.toString();
 } catch (IOException e) {
  e.printStackTrace();
 } finally {
  if (reader != null) {
  reader.close();
  }
  if (conn != null) {
  conn.disconnect();
  }
 }
 return rs;
 }

 // 將map型轉為請求參數型
 public static String urlencode(Map<String, Object> data) {
 StringBuilder sb = new StringBuilder();
 for (Map.Entry i : data.entrySet()) {
  try {
  sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue() + "", "UTF-8")).append("&");
  } catch (UnsupportedEncodingException e) {
  e.printStackTrace();
  }
 }
 return sb.toString();
 }
}