HttpClient5：Post请求

        //创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //以Post方式访问
        HttpPost httpPost = new HttpPost("http://httpbin.org/post");
        List<NameValuePair> nvps = new ArrayList<>();
        nvps.add(new BasicNameValuePair("username", "vip"));
        nvps.add(new BasicNameValuePair("password", "secret"));
        httpPost.setEntity(new UrlEncodedFormEntity(nvps));

        try {
            //执行
            CloseableHttpResponse response = httpClient.execute(httpPost);

            log.info("状态码: {}\t\t{}", response.getCode(), response.getReasonPhrase());

            HttpEntity entity = response.getEntity();

            //获取响应数据
            String content = EntityUtils.toString(entity);
            log.info("content: {}", content);

            //清理
            EntityUtils.consume(entity);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ParseException e) {
            e.printStackTrace();
        }

引入：

        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>fluent-hc</artifactId>
        </dependency>

代码简写：

       try {
            String content = Request.Post("http://httpbin.org/post")
                    .bodyForm(Form.form().add("username", "vip").add("password", "secret").build())
                    .execute().returnContent().asString();

            log.info("Content: {}", content);
        } catch (IOException e) {
            e.printStackTrace();
        }