httpclient发送get请求

 /**
      * 获取httpclient的请求url地址
      */
     public static String getUrl(){
         String url = "http://"+map.get("server")+":"+map.get("server_port")+map.get("heartbeat_path");
         System.out.println(url);
         StringBuilder params = new StringBuilder(StringUtils.EMPTY);
         for (String key : map.keySet()) {
             if("timestamp".equals(key)){
                 try {
                     params=params.append(key).append("=").append(URLEncoder.encode(map.get(key).toString(), "UTF-8")).append("&");
                 } catch (UnsupportedEncodingException e) {
                     e.printStackTrace();
                 }
             }else if("heartbeat_path".equals(key)){
                 try {
                     params=params.append(key).append("=").append(URLEncoder.encode(map.get(key).toString(), "utf-8")).append("&");
                 } catch (UnsupportedEncodingException e) {
                     e.printStackTrace();
                 }
             }else if("cmd".equalsIgnoreCase(key)){
                 boolean isEndError=map.get(key).toString().endsWith("error!!!");
                 if("mac error!!!".equalsIgnoreCase(map.get(key).toString())||isEndError){
                     params = params.append(key).append("=").append("")
                             .append("&");
                 }else{
                     params = params.append(key).append("=").append(map.get(key))
                             .append("&");
                 }
             }else{
                 params = params.append(key).append("=").append(map.get(key))
                         .append("&");
             }
         }
         if (!"".equals(params)) {
             url = url + "?" + params.toString();
         }
         url = url.substring(0, url.length() - 1);
         return url;
     }

     /**
      * 发送httpclient请求，并根据服务器端的返回数据更新设备状态
      */
     public static void httpGet(String url) {
         //记录当前状态
         HashMap<String, Object> temp=new HashMap<String,Object>();
         for(Iterator it = map.keySet().iterator() ; it.hasNext();){
             String key = it.next().toString();
             temp.put(key, map.get(key));
         }
         Helper.mapSession=temp;
         CloseableHttpClient httpClient = HttpClients.createDefault();
         RequestConfig requestConfig = RequestConfig.custom()
                 .setSocketTimeout(20000).setConnectTimeout(20000).build();
         HttpGet httpget = new HttpGet(url);
         httpget.addHeader("Accept", "*/*");
         httpget.addHeader("Connection", "keep-alive");
         httpget.addHeader("Accept-Encoding", "gzip, deflate");
         CloseableHttpResponse response;
         try {
             response = httpClient.execute(httpget);
             HttpEntity entity = response.getEntity();
             System.out.println(response.getStatusLine());
             if (entity != null) {
                 String params=EntityUtils.toString(entity);
                 String[] paramsAry=params.split("\\|");
                 if(paramsAry.length==4){

                     map.put("status", paramsAry[3]);
                     String[] cmdAry=paramsAry[2].split("@@");
                     System.out.println("response={"+params+"}");
                     map.put("rt", "");
                     if(!"".equals(cmdAry[0].trim())&&cmdAry[0]!=null){
                         if(cmdAry[0].endsWith("error!!!")){
                             map.put("cmd", "");
                             map.put("status", 0);
                             Helper.flag=false;//没有指令的情况
                             return;
                         }
                         reciveTime=new Date().getTime();
                         //map.put("timestamp", new Date());
                         if(!("".equals(cmdAry[0])||null==cmdAry[0])){
                             Helper.flag=true;//有指令的情况
                         }
                         map.put("cmd", cmdAry[0]);

                         if(cmdAry.length>1){
                             for(int i=1;i<cmdAry.length;i++){
                                 String[] param=cmdAry[i].split("=");
                                 if("sensor_indoor_temp".equalsIgnoreCase(param[0])){
                                     double indoorTemp=Double.parseDouble(map.get("indoor_temp").toString());
                                     double value=Double.parseDouble(param[1]);
                                     map.put("indoor_temp", indoorTemp+value);
                                 }else if("sensor_outdoor_temp".equalsIgnoreCase(param[0])){
                                     double indoorTemp=Double.parseDouble(map.get("outdoor_temp").toString());
                                     double value=Double.parseDouble(param[1]);
                                     map.put("outdoor_temp", indoorTemp+value);
                                 }
                                 map.put(param[0], param[1]);
                             }
                             return;
                         }
                     }else{
                         map.put("cmd", "");
                         map.put("status", 0);
                         Helper.flag=false;//没有指令的情况
                     }
                 }else{
                     System.out.println("response={"+params+"}");
                 }

             }
             response.close();
             httpClient.close();
         } catch (IOException e) {
             Helper.startProgram=false;
             Helper.flag=false;
             runDeviceSimulator();
             //e.printStackTrace();
         }
     }