如何在scala中通过表创建数据帧

import org.apache.spark.sql.{SparkSession, DataFrame}
import org.apache.spark.sql.types.{StructType, StructField, StringType, IntegerType}

val spark = SparkSession.builder()
  .appName("Create DataFrame")
  .master("local")
  .getOrCreate()

val schema = StructType(Seq(
  StructField("name", StringType, nullable = false),
  StructField("age", IntegerType, nullable = false)
))

val data = Seq(
  ("Alice", 25),
  ("Bob", 30),
  ("Charlie", 35)
)

val df = spark.createDataFrame(data).toDF("name", "age")