springmvc接口接收参数与请求参数格式的整理

    public static String post(HttpClient httpClient, String url, Map<String, String> params,
            Map<String, String> headers) throws ClientProtocolException, IOException {
        logger.info("Ready Post Request Url[{}]", url);
        HttpPost post = new HttpPost(url);
        setHttpHeaders(post, headers);
        List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>();
        for (Map.Entry<String, String> entry : params.entrySet()) {
            nameValuePairList.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
        }
        UrlEncodedFormEntity entity = new UrlEncodedFormEntity(nameValuePairList, Consts.UTF_8);
        post.setEntity(entity);
        HttpResponse response = httpClient.execute(post);
        if (null == response || response.getStatusLine() == null) {
            logger.info("Post Request For Url[{}] is not ok. Response is null", url);
            return null;
        } else if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
            logger.info("Post Request For Url[{}] is not ok. Response Status Code is {}", url,
                    response.getStatusLine().getStatusCode());
            return null;
        }
        return EntityUtils.toString(response.getEntity());
    }

@RequestBody User user

{
    "id": 1,
    "userName": "bryant",
    "password": "123456",
    "name": "kobe",
    "Date": "1990-02-27"
}

    public static String post(HttpClient httpClient, String url, String content, Map<String, String> headers)
            throws ClientProtocolException, IOException {
        logger.info("Ready Post Request Url[{}]", url);
        url = url.replaceAll(" ", "%20");
        HttpPost post = new HttpPost(url);
        setHttpHeaders(post, headers);
        StringEntity entity = new StringEntity(content, Constants.CHARSET_UTF8);
        post.setEntity(entity);
        HttpResponse response = httpClient.execute(post);
        if (null == response || response.getStatusLine() == null) {
            logger.info("Post Request For Url[{}] is not ok. Response is null", url);
            return null;
        } else if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
            logger.info("Post Request For Url[{}] is not ok. Response Status Code is {}", url,
                    response.getStatusLine().getStatusCode());
            return null;
        }
        return EntityUtils.toString(response.getEntity(), "utf-8");
    }
    public static void main(String[] args) throws IOException {
        Map<String, Object> map = new HashMap<>();
        map.put("empId", "1");
        map.put("empName", "测试用户");
        map.put("empEmail", "test@qq.com");
        Map<String, String> head = new HashMap<>();
        // 一定要设置参数格式
        head.put("Content-Type", "application/json;charset=UTF-8");
        System.out.println(HttpCaller.post(HttpClients.createDefault(), "http://localhost:8080/user/add",
                JsonUtil.toJson(map), head));
    }