如何在java中使用restapi从sharepoint列表中获取文件内容

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;

public class SharePointFileReader {
    public static void main(String[] args) {
        String sharePointUrl = "https://your-sharepoint-site-url";
        String listName = "your-list-name";
        String fileId = "your-file-id";

        // 构建REST API的URL
        String apiUrl = sharePointUrl + "/_api/web/lists/getbytitle('" + listName + "')/items(" + fileId + ")/File";

        // 创建HTTP客户端
        HttpClient httpClient = HttpClientBuilder.create().build();

        try {
            // 创建GET请求对象
            HttpGet request = new HttpGet(apiUrl);

            // 添加请求头
            request.setHeader("Accept", "application/json;odata=verbose");

            // 发送HTTP请求并接收响应
            HttpResponse response = httpClient.execute(request);

            // 从响应中提取文件内容
            HttpEntity entity = response.getEntity();
            String fileContent = EntityUtils.toString(entity);

            // 处理文件内容
            System.out.println(fileContent);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}