如何在HDFS中将字符串写入文本文件？

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;

import java.io.IOException;
import java.io.OutputStream;

public class WriteStringToHDFS {
    public static void main(String[] args) {
        String hdfsPath = "hdfs://localhost:9000"; // HDFS的地址
        String filePath = "/user/username/output.txt"; // 文件在HDFS中的路径和名称
        String content = "Hello, World!"; // 要写入文件的字符串内容

        Configuration conf = new Configuration();
        conf.set("fs.defaultFS", hdfsPath);

        try {
            FileSystem fs = FileSystem.get(conf);
            Path file = new Path(filePath);

            if (!fs.exists(file)) {
                fs.createNewFile(file);
            }

            OutputStream outputStream = fs.create(file);
            outputStream.write(content.getBytes());
            outputStream.close();

            fs.close();

            System.out.println("字符串已成功写入HDFS文件！");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}