如何在Java中通过REST在UTF-8中获得合流页面？

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

import java.nio.charset.StandardCharsets;

public class Main {
    public static void main(String[] args) {
        try {
            // 创建HttpClient对象
            HttpClient httpClient = HttpClientBuilder.create().build();

            // 创建GET请求对象
            HttpGet httpGet = new HttpGet("http://example.com/page");

            // 设置请求头信息
            httpGet.setHeader("Accept", "text/html");

            // 发送GET请求
            HttpResponse response = httpClient.execute(httpGet);

            // 获取服务器响应的内容
            HttpEntity entity = response.getEntity();
            String responseBody = EntityUtils.toString(entity, StandardCharsets.UTF_8);

            // 对获取到的合流页面进行UTF-8编码处理
            String utf8Response = new String(responseBody.getBytes("ISO-8859-1"), StandardCharsets.UTF_8);

            // 打印结果
            System.out.println(utf8Response);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}