我在请求中获得的ID具有特定格式的日期，并且没有他们尝试在我的API上获得的匹配，如果它是当天的最后匹配，则以字符串形式结束。 我的变量是
@Pattern(regexp = "^\\d{8}_.*", message = "Field 'batchId' invalid.please provide in format yyyyMMdd_<digit/end>")
private String batch Id;
for example 20200509_001 for the first try or 20200509_9999999 for 9999999 hits ie format yyyyMMdd_no_of_tries
or 20200509_end ie yyyyMMdd_end for the last hit of the day (this end can be case insensitive.)
but 1 of them must be there, either no_of_tries or end 20200509_ this is invalid.
I need to prepare a pattern for this., so far I have come up "^\\d{8}_.*" it matches up to 8 digits, but I am not able to match digits or string after the _.
