如何将spark scala map字段合并到BQ中？

import com.google.cloud.spark.bigquery._
import org.apache.spark.sql.SparkSession

val spark = SparkSession.builder()
  .appName("Spark BQ Integration")
  .config("spark.master", "local")
  .config("spark.bigquery.project.id", "your_project_id")
  .config("spark.bigquery.dataset.location", "your_dataset_location")
  .config("spark.bigquery.dataset.name", "your_dataset_name")
  .config("spark.bigquery.table.name", "your_table_name")
  .getOrCreate()

val data = Seq(
  (1, Map("key1" -> "value1", "key2" -> "value2")),
  (2, Map("key3" -> "value3", "key4" -> "value4"))
)

val df = spark.createDataFrame(data).toDF("id", "map_field")
df.createOrReplaceTempView("temp_table")

spark.sql("INSERT INTO your_table_name SELECT * FROM temp_table")