@Test
    public void testWendu() throws Exception {
        String[] parameters = {"北京", "上海", "深圳", "广州"};
        ArrayList<String> list = new ArrayList();
        for (int i = 0; i < parameters.length; i++) {
            httpclient httpGet = new httpclient();
            JSONObject jsonObject = httpGet.sendGet(Url, "city=" + parameters[i]);
//            String wenduOfYestoday = json.getJSONObject("data").getJSONObject("yesterday").getString("high");
            JsonPath json = new JsonPath();
            String expression = "$..yesterday.high";
            String wenduOfYestoday = json.JsonPath(jsonObject.toString(), expression);
            System.out.println(wenduOfYestoday);

            wenduOfYestoday = wenduOfYestoday.split("( )|(℃)")[1];
            list.add(wenduOfYestoday);
            sleep(5000);
        }

//        Collections.sort(list);
//        System.out.println(list.toString());

        boolean flag = true;
        for (int i = 0; i < list.size(); i++) {
            flag = false;
            for (int j = 0; j < list.size() - 1; j++) {
                float value1 = Float.parseFloat(list.get(j));
                float value2 = Float.parseFloat(list.get(j + 1));
                if (value1 > value2) {
                    list.set(j, String.valueOf(value2));
                    list.set(j + 1, String.valueOf(value1));
                    flag = true;
                }
            }
            if (flag == false) {
                break;
            }
        }
        System.out.println("排序后：" + list.toString());


    }

xclient 了解一下？