使用scala替换spark dataframe列中多次出现的字符串的正则表达式

我有一个列，其中一个特定字符串多次出现。发生的次数不是固定的。我可以多次得到这样的字符串

例如： 列描述包含以下数据

已为该帐户和该帐户取消该帐户

这里基本上我想用单个帐户替换多个并发帐户

预期产出：

已为该帐户取消该帐户，并且已与该帐户一起取消该帐户

您可以使用regex模式（源代码：）和

regexp\u replace

替换重复的单词：

val df = spark.sql("select 'The account account has been cancelled for the account account account and with the account' col")

df.show(false)
+-------------------------------------------------------------------------------------------+
|col                                                                                        |
+-------------------------------------------------------------------------------------------+
|The account account has been cancelled for the account account account and with the account|
+-------------------------------------------------------------------------------------------+

val df2 = df.withColumn("col", regexp_replace(col("col"), "\\b(\\w+)(\\b\\W+\\b\\1\\b)*", "$1"))

df2.show(false)
+-------------------------------------------------------------------+
|col                                                                |
+-------------------------------------------------------------------+
|The account has been cancelled for the account and with the account|
+-------------------------------------------------------------------+