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需要对字符串后四位脱敏,正则表达式要怎么写?
若字符串长度不固定,想要对后面4位字符脱敏,可通过设置下面正则表达式实现:
正则表达式:([\w\W]*)([\w\W]{4})
脱敏字符:$1****
效果:
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