public static void main(String[] args) {
		Map<String, Object> params = new HashMap<>(16);
		params.put("location", "121.447518,37.519286");
		params.put("day", "0");
		String requestUrl = "https://api.foreocean.com/travel/universal";
		String response = get(requestUrl, params);
		System.out.println(response);
	}

	public static String get(String url, Map<String, Object> params) {
		try {
			CloseableHttpClient httpClient = HttpClients.createDefault();
			url = url + "?";
			for (Iterator<String> iterator = params.keySet().iterator(); iterator.hasNext();) {
				String key = iterator.next();
				String temp = key + "=" + params.get(key) + "&";
				url = url + temp;
			}
			url = url.substring(0, url.length() - 1);
			HttpGet httpGet = new HttpGet(url);
			httpGet.addHeader("Token","API调用令牌");
			CloseableHttpResponse response = httpClient.execute(httpGet);
			try {
				HttpEntity entity = response.getEntity();
				if (entity != null) {
					String str = EntityUtils.toString(entity, CHARSET);
					return str;
				}
			} finally {
				response.close();
				httpClient.close();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}