Question

我是coldfusion的新手，我的目标是根据某些词语删除部分字符串。

例如：

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

如何删除单词＆＃34; 与＆＃34;相关的其中一个神话？为了有 中国的长城是它是唯一的人造结构如弦？

我使用了以下功能

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

我看到这个问题已经有了一个可以接受的答案，但我想我还要添加另一个答案：）

你可以通过查找单词＆＃39; Great＆＃39;的位置来实现。在字符串中。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>

如果你想削减两端的字符，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，可写为：

<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)", "\1");

writeDump(substring);
</cfscript>

Answer 2

您可以将句子视为以空格分隔的列表。所以，如果你想切断你的句子，开始使用＆＃34;中国长城＆＃34;，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>

可能有更快的方法来做到这一点。这是cfLib.org上的一个功能，它可以以类似的方式更改列表：LINK。

如何使用coldfusion从字符串中删除单词或字符

2 个答案: