public static JSONObject publishDmpCustomAudience() { String access_token = "xxx"; final Long advertiser_id = 0L; // 请求地址 String open_api_url_prefix = "https://ad.oceanengine.com/open_api/2/"; String uri = "dmp/custom_audience/publish/"; // 请求参数 Map data = new HashMap() { { put("advertiser_id", advertiser_id); put("custom_audience_id", 3); } }; // 构造请求 HttpPost httpEntity = new HttpPost(open_api_url_prefix + uri); httpEntity.setHeader("Access-Token", access_token); CloseableHttpResponse response = null; CloseableHttpClient client = null; try { client = HttpClientBuilder.create().build(); httpEntity.setURI(URI.create(open_api_url_prefix + uri)); httpEntity.setEntity(new StringEntity(JSONObject.toJSONString(data), ContentType.APPLICATION_JSON)); response = client.execute(httpEntity); if (response != null && response.getStatusLine().getStatusCode() == 200) { BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); StringBuffer result = new StringBuffer(); String line = ""; while ((line = bufferedReader.readLine()) != null) { result.append(line); } bufferedReader.close(); return JSONObject.parseObject(result.toString()); } } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { try { if (response != null) { response.close(); } client.close(); } catch (IOException e) { e.printStackTrace(); } } return null; }这段代码能简写吗

可以简化这段代码。下面是简化后的代码：

public static JSONObject publishDmpCustomAudience() {
    String access_token = "xxx";
    final Long advertiser_id = 0L;

    // 请求地址
    String open_api_url_prefix = "https://ad.oceanengine.com/open_api/2/";
    String uri = "dmp/custom_audience/publish/";

    // 请求参数
    Map<String, Object> data = new HashMap<>();
    data.put("advertiser_id", advertiser_id);
    data.put("custom_audience_id", 3);

    // 构造请求
    HttpPost httpEntity = new HttpPost(open_api_url_prefix + uri);
    httpEntity.setHeader("Access-Token", access_token);
    httpEntity.setEntity(new StringEntity(JSONObject.toJSONString(data), ContentType.APPLICATION_JSON));

    try (CloseableHttpClient client = HttpClientBuilder.create().build();
         CloseableHttpResponse response = client.execute(httpEntity)) {

        if (response != null && response.getStatusLine().getStatusCode() == 200) {
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
            StringBuilder result = new StringBuilder();
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                result.append(line);
            }
            bufferedReader.close();
            return JSONObject.parseObject(result.toString());
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

这里的改动包括：
- 使用泛型指定 `data` 的类型为 `Map<String, Object>`；
- 使用 try-with-resources 简化关闭资源的代码；
- 使用 `StringBuilder` 替代 `StringBuffer`，因为前者是线程安全的，后者不是；
- 移除了无用的异常捕获。

这样代码会更简洁和易读。