HttpClient获取第三方接口数据以及解析获取json

Posted 2021-01-03 hjy4ever

初到公司实习，需要通过http post获取第三方接口返回的json数据并解析json数组获取value

@RequestMapping("/getProductName")
@ResponseBody
public ArrayList getProductName(HttpServletRequest request) throws Exception {

    HttpPost httpPost = new HttpPost("");
    CloseableHttpClient client = HttpClients.createDefault();
    String respContent = null;
    JSONObject jsonParam = new JSONObject();
    StringEntity entity = new StringEntity(jsonParam.toString(),"utf-8");//解决中文乱码问题
    entity.setContentEncoding("UTF-8");
    entity.setContentType("application/json");
    httpPost.setEntity(entity);
    System.out.println();
    ArrayList productList = new ArrayList();

    try{
        HttpResponse resp = client.execute(httpPost);
        if(resp.getStatusLine().getStatusCode() == 200) {
            HttpEntity he = resp.getEntity();
            respContent = EntityUtils.toString(he,"UTF-8");
            System.out.println("本处输出第三方接数据---------------->"+respContent);
            JSONObject jsonObject= JSON.parseObject(respContent);
            String jsonStr =jsonObject.getString("需要获取的json中的属性");  //取出json数组中的某一个属性
            System.out.println("这里输出返回产品名称"+jsonStr);
            JSONArray jsonArray = jsonObject.getJSONArray("需要获取的json中的属性");
            for (int i = 0;i<jsonArray.size();i++){
               // Object list = jsonArray.get(i);
                //System.out.println(list);
            }

            JSONObject jo = JSONObject.parseObject(respContent);
            System.out.println("=============="+jo);
            net.sf.json.JSONObject jsonobj = net.sf.json.JSONObject.fromObject(jo);
            net.sf.json.JSONArray jsonArray1 = jsonobj.getJSONArray("需要获取的json中的属性");
            for(int i=0;i<jsonArray1.size();i++)
            {
                String productName = (String)jsonArray1.getJSONObject(i).get("json数组中某一个属性");
                System.out.println(productName);
                productList.add(productName);
            }

     
        }}catch (Exception e){

        System.out.println("对接第三方接口出现异常");
    }

          return productList;
}