ColdFusion中的正则表达式

Question

如何使用rereplace修剪前导零和尾随零？

它与一个插入符号和一个星星和一个美元符号有关。

和0。

这里有一个备忘单： http://www.petefreitag.com/cheatsheets/regex/

Answer 1

reReplace(string, "^0*(.*?)0*$", "$1", "ALL") 

即：

^ = starting with 
0* = the character "0", zero or more times 
() = capture group, referenced later as $1 
.* = any character, zero or more times 
*? = zero or more, but lazy matching; try not to match the next character 
0* = the character "0", zero or more times, this time at the end 
$ = end of the string 

Answer 2

<cfset newValue = REReplace(value, "^0+|0+$", "", "ALL")> 

Answer 3

我不是一个ColdFusion的专家，但像，更换所有^ 0 + 0 + $的空字符串，例如：

REReplace("000xyz000","^0+|0+$","") 

Answer 4

这似乎工作..会检查你的用例。

<cfset sTest= "0001" /> 
<cfset sTest= "leading zeros? 0001" /> 
<cfset sTest= "leading zeros? 0001.02" /> 
<cfset sTest= "leading zeros? 0001." /> 
<cfset sTest= "leading zeros? 0001.2" /> 

<cfset sResult= reReplace(sTest , "0+([0-9]+(\.[0-9]+)?)" , "\1" , "all") /> 

Answer 5

以上根本不起作用，除了布拉德利的回答！

在ColdFusion中，为了引用捕获组，您需要\而不是$，例如， \1而不是$1。

所以正确答案是：

reReplace(string, "^0*(.*?)0*$", "\1", "ALL") 

即：

^ = starting with 
0* = the character "0", zero or more times 
() = capture group, referenced later as $1 
.* = any character, zero or more times 
*? = zero or more, but lazy matching; try not to match the next character 
0* = the character "0", zero or more times, this time at the end 
$ = end of the string 

和：

\1 reference to capture group 1 (see above, introduced by () 

Answer 6

这个职位是很老，但我张贴的情况下，任何人发现它很有用。我发现自己需要多次修剪自定义字符，所以我想分享一下我写的最近的帮手，如果您觉得它有用，可以使用rereplace修剪任何自定义字符。它和普通修剪一样工作，但可以传递任何自定义字符串作为第二参数，它将修剪所有前导/尾随字符。

/** 
    * Trims leading and trailing characters using rereplace 
    * @param string - string to trim 
    * @param string- custom character to trim 
    * @return string - result 
    */ 
    function $trim(required string, string customChar=" "){ 
     var result = arguments.string; 

     var char = len(arguments.customChar) ? left(arguments.customChar, 1) : ' '; 

     char = reEscape(char); 

     result = REReplace(result, "#char#+$", "", "ALL"); 
     result = REReplace(result, "^#char#+", "", "ALL"); 

     return result; 
    } 

你的情况，你可以使用这个帮手做这样的事情：

string = "0000foobar0000"; 
string = $trim(string, "0"); 
//string now "foobar" 

希望这可以帮助别人:)