java - A number within quotes - Regex

Question

I would like a regular expression that matches this: word,"number",word

Where number is something like: 100,000.00

So far I have this but I'm not sure how to check for quotes around a number.

(w+)(,)\\(d+)(,)(d+)(.)(d+)(,)\\(w+)(,)

Answer 1

只需添加带有转义字符的引号，如下所示：

\\w+,\\"\\d+,\\d+\\.\\d+\\",\\w+

我删除了最后一个昏迷......因为不是模式的一部分。

Answer 2

如果您的号码后面可以有很少（或没有）分号和树数字，或者精度部分可以是可选的，您可以使用这个正则表达式：

String regex=
        "\\w+,\"" +     // word, semicolon, quote mark
        "\\d{1,3}" +    // number in form d, dd, or ddd
        "(,\\d{3})*" +  // optional (* means 0 or more times) part of numbers in format ",ddd"  
        "(\\.\\d{2})?" +// optional (? means 0 or 1 time) part ".dd" 
        "\",\\w+";      // quote mark, semicolon, word

这将接受：

-precision part is optional
d
d.dd 

-number of semicolons can change, but every semicolon MUST have 3 digits after it
dd,ddd
d,ddd,ddd
d,ddd,ddd.dd