• map调用接口方式：

    /**
     * 发送post请求，dataform方式
     * @param url
     * @param map
     * @param encoding
     * @return
     */
    public static JsonResult sendPostReqByFormData(String url, Map<String,Object> map, String encoding){
        HttpClient client= HttpClients.createDefault();
        HttpPost request = new HttpPost(url);
        // 装填参数
        List<NameValuePair> nameValuePairs = new ArrayList<>();
        if (map != null) {
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                nameValuePairs.add(new BasicNameValuePair(entry.getKey(), entry.getValue().toString()));
            }
        }
        try {
            request.setEntity(new UrlEncodedFormEntity(nameValuePairs ));
            HttpResponse resp = client.execute(request);
            HttpEntity entity = resp.getEntity();
            if(entity!=null){
                String result = EntityUtils.toString(entity,encoding);//解析返回数据
                if(result != null && !"".equals(result)){
                    return new JsonResult(result);
                }else{
                    return new JsonResult("1","获取返回参数信息为空 .");
                }
            }else{
                return new JsonResult("1","请求返回会话实体为空 .");
            }
        } catch (Exception e) {
            logger.info("request post url by form data error {}",e.getMessage());
            return new JsonResult("1","请求url"+url+ " 异常");
        }
    }

• json调用接口方式：

    /**
     * post请求传输json数据
     *
     * @param url
     * @param json
     * @param encoding
     * @return
     * @throws ClientProtocolException
     * @throws IOException
     */
    public static JsonResult sendPostDataByJson(String url, String json, String encoding) throws ClientProtocolException, IOException {
        // 创建httpclient对象
        HttpClient httpClient = HttpClients.createDefault();
        // 创建post方式请求对象
        HttpPost httpPost = new HttpPost(url);
        // 设置参数到请求对象中
        StringEntity stringEntity = new StringEntity(json, ContentType.DEFAULT_TEXT);
        stringEntity.setContentEncoding("utf-8");
        httpPost.setEntity(stringEntity);

        try {
            HttpResponse resp = httpClient.execute(httpPost);
            HttpEntity entity = resp.getEntity();
            if(entity != null){
                String result = EntityUtils.toString(entity,encoding);//解析返回数据
                if(result != null && !"".equals(result)){
                    return new JsonResult(result);
                }else{
                    return new JsonResult("1","获取返回参数信息为空 .");
                }
            }else{
                return new JsonResult("1","请求返回会话实体为空 .");
            }
        } catch (Exception e) {
            logger.info("request post url by form data error {}",e.getMessage());
            return new JsonResult("1","请求url"+url+ " 异常");
        }
    }