如何使用RegEx从以下响应中提取userId值

Question

如何使用RegEx从代码响应中提取userId值

{"errorId":0,"errorLongDesc":"Data Successfully saved","errorDesc":"success","user":{"userId":3706}}

Answer 1

不建议通过正则表达式进行，但如果找不到其他选项：

(?<="userId":)\d+

演示：https://regex101.com/r/kZ4tQ7/2