restful Interface Example parse call

This example provides a core code only, with reference to the case of using the

public static String request(String path, Map<String, Object> queryMap,
			String entity, String method, int timeout) {
		String queryString = RESTfulUtils.queryMap2String(queryMap);
		if (StringUtils.isNotBlank(queryString)) {
			if (path.contains("?")) {
				path += "&" + queryString;
			} else {
				path += "?" + queryString;
			}
		}
		InputStream is = null;
		InputStreamReader isr = null;
		BufferedReader in = null;
		HttpURLConnection http = null;
		StringBuffer result = new StringBuffer();
		try {
			URL url = new URL(path);
			http = (HttpURLConnection) url.openConnection();
			http.setConnectTimeout(timeout);
			http.setReadTimeout(timeout);
			http.setRequestMethod(method);
			http.setRequestProperty("Proxy-Connection", "Keep-Alive");
			http.setRequestProperty("Content-Type", "application/json");
			http.setDoOutput(true);
			http.setDoInput(true);
			http.connect();
			if (StringUtils.isNotBlank(entity)) {
				OutputStreamWriter wr = new OutputStreamWriter(http
						.getOutputStream(), "utf-8");
				wr.write(entity);
				wr.flush();
				wr.close();
			}
			is = http.getInputStream();
			isr = new InputStreamReader(is, "utf-8");
			in = new BufferedReader(isr);
			for (String line; (line = in.readLine()) != null;) {
				result.append(line + "\n");
			}
		} catch (Exception e) {
			e.printStackTrace();
			result.setLength(0);
			result.append(error);
		} finally {
			RESTfulUtils.close(http, is, isr, in);
		}
		return result.toString().trim();
	}









private static void close(HttpURLConnection http, InputStream is,
			InputStreamReader isr, BufferedReader in) {
		if (http != null) {
			http.disconnect();
		}
		if (in != null) {
			try {
				in.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		if (isr != null) {
			try {
				isr.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		if (is != null) {
			try {
				is.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}