如何用Java将文本文件作为一个字符串读入Spark DataFrame

import org.apache.spark.sql.SparkSession;
import org.apache.spark.sql.Dataset;
import org.apache.spark.sql.Row;

SparkSession spark = SparkSession.builder()
        .appName("Java Text File to DataFrame")
        .master("local")
        .getOrCreate();

Dataset<Row> df = spark.read().text("path/to/text/file.txt");

String text = df.collectAsList().get(0).getString(0);

import org.apache.spark.sql.SparkSession;
import org.apache.spark.sql.Dataset;
import org.apache.spark.sql.Row;

public class TextFileToString {
    public static void main(String[] args) {
        SparkSession spark = SparkSession.builder()
                .appName("Java Text File to DataFrame")
                .master("local")
                .getOrCreate();

        Dataset<Row> df = spark.read().text("path/to/text/file.txt");
        String text = df.collectAsList().get(0).getString(0);

        System.out.println("Text content: " + text);
    }
}