我需要一个RegEx来表示一个数值,最多两个小数位大于零,并且在一列中可能有也可能没有零。我还应该补充....整数都很好。请参阅下面的内容,但可能有前导或尾随空格
Good values:
.1
0.1
1.12
123.12
92
092
092.13
Error values:
0
0.0
0.00
00
1.234
-1
-1.2
Anything less than zero
答案 0 :(得分:49)
这个怎么样:
^\s*(?=.*[1-9])\d*(?:\.\d{1,2})?\s*$
<强>解释强>
^ # Start of string
\s* # Optional whitespace
(?=.*[1-9]) # Assert that at least one digit > 0 is present in the string
\d* # integer part (optional)
(?: # decimal part:
\. # dot
\d{1,2} # plus one or two decimal digits
)? # (optional)
\s* # Optional whitespace
$ # End of string
用Python测试:
>>> import re
>>> test = [".1", "0.1", "1.12", "123.12", "92", "092", "092.13", "0", "0.0", "0.00", "00", "1.234", "-1", "-1.2"]
>>> r = re.compile(r"^\s*(?=.*[1-9])\d*(?:\.\d{1,2})?\s*$")
>>> for item in test:
... print(item, "matches" if r.match(item) else "doesn't match")
...
.1 matches
0.1 matches
1.12 matches
123.12 matches
92 matches
092 matches
092.13 matches
0 doesn't match
0.0 doesn't match
0.00 doesn't match
00 doesn't match
1.234 doesn't match
-1 doesn't match
-1.2 doesn't match
答案 1 :(得分:1)
[0-9]+\.[0-9]{1,2}
那会找到:
答案 2 :(得分:1)
/^[0-9]*(\.{1})?([0-91-9][1-9])?$/
试试这会传递你的所有案件
答案 3 :(得分:1)
以下代码同时允许,
和.
。
^(?=.*[1-9])[0-9]*[.,]?[0-9]{1,2}$
答案 4 :(得分:-3)
此表达式不允许在开头和最后一个空格
foreach (var handler in this.preRequestHandlers)
{
await handler.Handle(request);
}