项目中遇到一个请求方式要求：

1 、POST 请求
2 、Content-Type: text/xml; charset=utf-8

项目是Java代码 使用的httpclick发送的请求，接下来让我看下如何实现，本部分只提供核心请求代码，之前分享过httpclick发送请求工具类，有兴趣的小伙伴可以查看下之前文章(●'◡'●)

代码如下：

public static String doPost(String url, JSONObject params) {
        String result = "";
        CloseableHttpResponse response = null;
        try {
            //设置请求地址，创建 URIBuilder
            URIBuilder uriBuilder = new URIBuilder(url);
            if (!params.isEmpty()) {
                List<NameValuePair> nvp = new ArrayList<>();
                for (String key : params.keySet()) {
                    nvp.add(new BasicNameValuePair(key, params.getString(key)));
                }
                uriBuilder.setParameters(nvp);
            }
            HttpPost httpPost = new HttpPost(uriBuilder.build());
            httpPost.setConfig(REQUEST_CONFIG);
            //返回json数据时不需要下面一行header
            httpPost.setHeader("Accept", "text/xml");
            //定义Content-Type
            httpPost.setHeader("Content-Type", "application/x-www-form-urlencoded");

            //发起请求
            response = HTTP_CLIENT.execute(httpPost);
            if (response.getStatusLine().getStatusCode() == CODE) {
                HttpEntity entity = response.getEntity();
                result = EntityUtils.toString(entity, "utf-8");
            } else {
                log.error("\n请求接口错误，请检查接口是否可以正常访问！");
            }
            log.info("\n发起接口请求信息\n地址：{}\n参数：{}\n请求方式：{}\n请求结果：{}", url, params.toJSONString(), httpPost.getMethod(), result);
        } catch (URISyntaxException | IOException e) {
            log.error("\n请求接口错误，请检查接口是否可以正常访问！\n地址：{},\n参数：{}", url, params.toJSONString());
            throw new RuntimeException(e.getMessage());
        } finally {
            try {
                if (response != null) {
                    response.close();
                    log.info("关闭连接请求！");
                }
            } catch (IOException e) {
                log.error("关闭发送请求失败！{}", e.getMessage());
            }
        }
        return result;
    }