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正则捕捉中(.*?)和(.*)的区别

Java使用正则匹配捕捉
1 Pattern p = Pattern.compile("name="sign" value="(.*)"/>");
2 Pattern p = Pattern.compile("name="sign" value=*"(.?)**"/>");
第二个比第一个多了一个?号,请问其中区别是什么


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贪婪和非贪婪的区别。

简单来说,非贪婪是匹配到就停,不管后面还有没有,贪婪是只要后面还符合,就不会停。


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