apache http客户端发送url编码的post请求

Question

我有一个dropwizard服务，我实现了一个使用APPLICATION_FORM_URLENCODED媒体类型并使用@FormParam注释的帖子请求

然后在我的客户端我正在使用Apache HttpClient发出这样的帖子请求：

public void sendPost(String path, JsonObject params) throws Exception {

                String url = "http://" + TS_API_HOST + ":" + TS_API_PORT + "/" + path;

                CloseableHttpClient httpClient = HttpClients.createDefault();
                HttpPost httpPost = new HttpPost(url);
                httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");
                List<NameValuePair> nvps = new ArrayList<NameValuePair>();

                Iterator<String> keys = params.keySet().iterator();
                while(keys.hasNext()){
                    String currentKey = keys.next();
                    nvps.add(new BasicNameValuePair(currentKey, params.get(currentKey).toString()));
                }
                System.out.println(nvps.toString());
                httpPost.setEntity(new UrlEncodedFormEntity(nvps));

                CloseableHttpResponse response = httpClient.execute(httpPost);

                try {
                    System.out.println(response.getStatusLine());
                    HttpEntity entity2 = response.getEntity();
                    // do something useful with the response body
                    // and ensure it is fully consumed
                    EntityUtils.consume(entity2);
                } finally {
                    response.close();
                }

            }

我传递的url和params是正确的，但我仍然收到400个不良请求作为回复。

在邮递员中它运作良好......