pyspark jdbc连接到SQL Server时出错

我正在尝试使用下面的代码将存储在Azure Data Lake Gen2上的json文档导入到SQL Server数据库，但是遇到以下错误。但是，当我从SQL Server读取数据时，jdbc连接有效。

错误信息： The driver could not open a JDBC connection.

码：

df = spark.read.format('json').load("wasbs://<file_system>@<storage-account-name>.blob.core.windows.net/empDir/data";)
val blobStorage = "<blob-storage-account-name>.blob.core.windows.net"
val blobContainer = "<blob-container-name>"
val blobAccessKey =  "<access-key>"
val empDir = "wasbs://" + blobContainer + "@" + blobStorage +"/empDir"
val acntInfo = "fs.azure.account.key."+ blobStorage
sc.hadoopConfiguration.set(acntInfo, blobAccessKey)
val dwDatabase = "<database-name>"
val dwServer = "<database-server-name>"
val dwUser = "<user-name>"
val dwPass = "<password>"
val dwJdbcPort =  "1433"
val sqlDwUrl = "jdbc:sqlserver://" + dwServer + ":" + dwJdbcPort + ";database=" + dwDatabase + ";user=" + dwUser+";password=" + dwPass
spark.conf.set("spark.sql.parquet.writeLegacyFormat","true")
df.write.format("com.microsoft.sqlserver.jdbc.SQLServerDriver").option("url", sqlDwUrl).option("dbtable", "Employee").option( "forward_spark_azure_storage_credentials","True").option("tempdir", empDir).mode("overwrite").save()

还有如何将empDir目录中的所有json文档插入employee表中？