JAVA爬数据

/**
 * httClient 请求 GET
 * 获取数据测试
 */

    @Test
    public void testDepartmentList(){
        //数据链接
        String url = "https://search-x.jd.com/Search?callback=jQuery1352084&area=22&enc=utf-8&keyword=%E7%AC%94%E8%AE%B0%E6%9C%AC&adType=7&urlcid3=672&page=1&ad_ids=291%3A33&xtest=new_search&_=1585561488653";
        //网页链接
        String referer = "https://search.jd.com/search?keyword=%E7%AC%94%E8%AE%B0%E6%9C%AC&enc=utf-8&qrst=1&rt=1&stop=1&spm=2.1.1&vt=2&cid2=671&cid3=672&ev=exbrand_%E8%81%94%E6%83%B3%EF%BC%88Lenovo%EF%BC%89%5E&uc=0";
        System.out.println("请求url:" + url);
        //http请求
        HttpRequest request = HttpUtil.createGet(url);

        request.header("Referer", referer);
        String str = request.execute().body();
        //获取str的长度
        int length = str.length();
        //indexOf返回某个指定的字符串值在字符串中首次出现的位置
        int i = str.indexOf("(");
        System.out.println(i);
        //截取字符串
        str = str.substring(i + 1, length - 1);
        System.out.println("请求响应:" + str);
        //转换为Obj类型
        JSONObject jsonObject = JSON.parseObject(str);
        System.out.println(jsonObject);
        //获取数组
        JSONArray jsonArray = jsonObject.getJSONArray("291");
        //计算数组的长度
        int size = jsonArray.size();
        //for循环遍历
        for (int j = 0; j < size; j++) {
            JSONObject jsonObject1 = jsonArray.getJSONObject(j);
            String productName = jsonObject1.getString("ad_title");
            Integer productPrice = jsonObject1.getInteger("pc_price");
//            Integer productPrice = Integer.parseInt(productPrice1);
            String imageUrl = jsonObject1.getString("image_url");
            String productBrief = jsonObject1.getString("color");

            Product product = new Product();
            product.setProductName(productName);
            product.setProductPrice(productPrice);
            product.setImageUrl(imageUrl);
            product.setProductBrief(productBrief);
            DateTime dateTime = new DateTime();
            System.out.println(dateTime);
            //product.setCreateTime("dateTime");
            productDao.saveProduct(product);
        }
    }