    @Test
    public void testSign()
    {

        String appKey = "XXXXXXXX";
        String secret = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
        Map<String, String> paramMap = new HashMap<String, String>();
        paramMap.put("city", "上海");
        paramMap.put("latitude", "31.21524");
        paramMap.put("longitude", "121.420033");
        paramMap.put("category", "美食");
        paramMap.put("region", "长宁区");
        paramMap.put("limit", "20");
        paramMap.put("radius", "2000");
        paramMap.put("offset_type", "0");
        paramMap.put("has_coupon", "1");
        paramMap.put("has_deal", "1");
        paramMap.put("keyword", "泰国菜");
        paramMap.put("sort", "7");
        paramMap.put("format", "json");
        String sign = DemoApiTool.sign(appKey, secret, paramMap);
        LOGGER.info(sign);
        Assert.assertNotNull(sign);
    }