将正则表达式从java转换为.Net [英] Converting regular expression from java to .Net

问题描述

我正在将项目从java转换为C＃。我不知道下面的正则表达式在C＃中的等价性是什么。

Hi,

I'm converting a project from java to C#. I have no idea what the equivalence of following regular expression would be in C#.

The regular expression : Customer rating (?<rating>\d.\d)/5.0
The java string : "Customer rating (?<rating>\\d.\\d)/5.0"

这是java代码：

This is the java code:

private static final Pattern ratingPattern = Pattern.compile("Customer rating (?<rating>\\d.\\d)/5.0");
...
m = Retriever.ratingPattern.matcher(X);
if (m.matches()) {
...
}

，适用于（X =客户评级1.0 / 5.0）。但这是C＃代码：

and it works for ( X=Customer rating 1.0/5.0 ). But this is the C# code:

static Regex rx = new Regex(@"Customer rating (?<rating>\\d.\\d)/5.0");
...
MatchCollection matches = rx.Matches(X);
if (matches.Count > 0)
{
...
}

并且它不起作用（X =客户评级1.0 /5.0）。我的意思是（Matches.count）总是0（X =客户评级1.0 / 5.0）



如果您有任何想法，请帮助我。



谢谢

Saman

and it doesn't work for ( X=Customer rating 1.0/5.0 ).I mean (Matches.count) is always 0 for ( X=Customer rating 1.0/5.0 )

Please help me if you have any ideas.

Thank you
Saman

推荐答案

正式表达式 [ ^ ]不要换另一种语言。



它的表格中的当前正则表达式也应该在C＃中工作。

Regular Expressions[^] do not change for a different language.

The current regular expression in it's form should work in C# as well.

试试这个：

Try this:

string pattern = @"Customer rating (\d.\d)/5.0"

常规表达语言 - 快速参考 [ ^ ]

正则表达式语法 [ ^ ]

http://www.regular-expressions.info/reference.html [ ^ ] - 非常好的网站，有大量的例子！

Regular Expression Language - Quick Reference[^]
Regular Expression Syntax[^]
http://www.regular-expressions.info/reference.html[^] - very good site with tons of examples!

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