通过HTTP访问接口，工具方法

/*
 *  通过HTTP访问接口，
 * 详情，返回一个Map对象
 */
public static Map<String,Object> callByHTTP(String URL,String data,String RequestMethod,boolean encrypt) throws Exception{
		StringBuffer returnData=new StringBuffer();
		InputStream in = null;
		//网络连接
		logger.info("url:url："+URL);
		try {
			 URL url = new URL(URL);
			 HttpURLConnection conn = (HttpURLConnection) url.openConnection();  
			 conn.setDoOutput(true);  
		     conn.setUseCaches(false);  
		     conn.setRequestMethod(RequestMethod);
		     conn.setRequestProperty("Cache-Control", "no-cache");  
		     conn.setRequestProperty("Charsert", "UTF-8");
		     conn.setConnectTimeout(30000);
		     conn.setReadTimeout(30000);
		     conn.connect();
		     if(data!=null&&!data.equals("")){
		    	OutputStream outputStream = conn.getOutputStream();
				outputStream.write(data.getBytes("UTF-8"));
				outputStream.flush();
				outputStream.close();	
		     }
		     in = conn.getInputStream();
		} catch (Exception e) {
			e.printStackTrace();
			logger.error("接口连接超时！");
		} 
		//解析数据
		try{  
			if (in != null) {
				BufferedReader bufferIn = new BufferedReader(new InputStreamReader(in,"UTF-8"));
				String temp=null;
				while((temp=bufferIn.readLine())!=null){
					returnData.append(temp); 
				}
				bufferIn.close();
				in.close();
				if (encrypt) {
					logger.info(returnData.toString());
					return  (Map<String,Object>)JSON.parse(DesEncrypt.getInstance().decrypt(returnData.toString()));
				} else {
					logger.info(returnData.toString());
					return  (Map<String,Object>)JSON.parse(returnData.toString());
				}
			}
		} catch (ApplicationException e) {
			e.printStackTrace();
			logger.error("系统接口运行失败！");
			throw new ApplicationException();
		}
		logger.error("系统接口连接失败！");
		return null;
	}