如何使用 coldfusion 从字符串中删除单词或字符

Question

我是 coldfusion 的新手，我的目标是根据某些单词删除字符串的一部分。

例如：

<cfset myVar = "One of the myths associated with the Great Wall of China is that it is the only man-made structure"/>¨

我怎样才能删除单词“与相关的神话之一”以便有
长城是中国唯一的人造建筑 as string?

我使用了以下函数

RemoveChars(string, start, count)

但我需要使用 RegEx 或本机 coldfusion 函数创建一个函数。

Answer 1

您可以将句子视为由空格分隔的列表。所以如果你想截断你的句子以"Great Wall of China"开头，你可以试试

<cfloop list="#myVar#" index="word" delimiters=" ">
  <cfif word neq "Great">
     <cfset myVar = listRest(#myVar#," ")>
  <cfelse>
     <cfbreak>
  </cfif>
</cfloop>
<cfoutput>#myVar#</cfoutput>

可能有更快捷的方法。这是 cfLib.org 中的一个函数，它可以以类似的方式更改列表：LINK.

Answer 2

我看到这个问题已经有一个可接受的答案，但我想我会添加另一个答案:)

您可以通过查找单词 'Great' 在字符串中的位置来完成。使用现代 CFML，您可以这样做：

<cfscript>
myVar = "One of the myths associated with the Great Wall of China is that it is the only man-made structure";

// where is the word 'Great'?
a = myVar.FindNoCase("Great");

substring = myVar.removeChars(1, a-1);
writeDump(substring);
</cfscript>

如果你想从两端切掉字符，使用 mid 会给你更多的灵活性。

<cfscript>
myVar = "One of the myths associated with the Great Wall of China is that it is the only man-made structure";

// where is the word 'Great'?
a = myVar.FindNoCase("Great");

// get the substring
substring = myVar.mid(a, myVar.len());
writeDump(substring);
</cfscript>

在旧版本的 CF 中将写为：

<cfscript>
myVar = "One of the myths associated with the Great Wall of China is that it is the only man-made structure";

// where is the word 'Great'
a = FindNoCase("Great", myVar);

// get the substring
substring = mid(myVar, a, len(myVar));
writeDump(substring);
</cfscript>

您也可以使用正则表达式来获得相同的结果，您必须决定哪个更适合您的用例：

<cfscript>
myVar = "One of the myths associated with the Great Wall of China is that it is the only man-made structure";

// strip all chars before 'Great'
substring = myVar.reReplaceNoCase(".+(Great)", "");

writeDump(substring);
</cfscript>

如何使用 coldfusion 从字符串中删除单词或字符

How to remove words or chars from a string using coldfusion

coldfusion

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