117笔记问答在Java中，可以使用URLConnection或HttpClient来设置请求头参数。
- 使用
URLConnection：
URL url = new URL("your_url");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
// 设置请求方式
connection.setRequestMethod("GET");
// 设置请求头参数
connection.setRequestProperty("header1", "value1");
connection.setRequestProperty("header2", "value2");
- 使用
HttpClient：
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpGet httpGet = new HttpGet("your_url");
// 设置请求头参数
httpGet.setHeader("header1", "value1");
httpGet.setHeader("header2", "value2");
CloseableHttpResponse response = httpClient.execute(httpGet);
请注意，以上代码仅为示例，具体使用方法可能会因具体情况而异。