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Java中uuid在替换中划线的时候为什么要用两个反斜线？
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PHP中文网 2017-04-18 09:37:03
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巴扎黑
巴扎黑2017-04-18 09:39:03 3 floor

The replacement here is to use Java’s regular expression, and Java’s regular expression is very messed up. The underscore in the regular expression must be escaped with a backslash. In Java, the backslash is a special character and must also be escaped. That’s why there are two backslashes

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刘奇
刘奇2017-04-18 09:39:03 2 floor

Java replaceAll split and the like use regular expressions by default

For solutions without escaping, please refer to my previous answer:

https://segmentfault.com/q/10...

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左手右手慢动作
左手右手慢动作2017-04-18 09:39:03 1 floor

You can do it directly, I just replaced it directly

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