Use the regular expression of the Freemaker Replace function.

Use the regular expression of the Freemaker Replace function.

Replace (param1, param2, param3)

Param1 regular expression; param2 replaces matched characters with specified characters; param3 Mode

Param3 parameters:

Mode	I	R	M	S	C	F
Replace	Supported	Supported	Only combined with r	Only combined with r	Only combined with r	Supported

 

 

Mode description:

I: Case insensitive

F: First only. That is, replace/find/etc. only the first occurrence of something.

R: The substring to find is a regular expression. Standard regular expression (http://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html)

M: Multi-line mode for regular expressions. in multi-line mode the expressions ^ and $ match just after or just before, respectively, a line terminator or the end of the string. by default these expressions only match at the beginning and the end of the entire string. note that ^ and $ doesn' t match the line-break character itself.

S: Enables dot-all mode for regular expressions (same as Perl singe-line mode ). in dot-all mode, the expression. matches any character, including a line terminator. by default this expression does not match line terminators.

C: Permits whitespace and comments in regular expressions. Spaces and comments are allowed in regular expressions.

Example:

<#assign s = 'foo bAr baar'>${s?replace('ba', 'XY')}i: ${s?replace('ba', 'XY', 'i')}if: ${s?replace('ba', 'XY', 'if')}r: ${s?replace('ba*', 'XY', 'r')}ri: ${s?replace('ba*', 'XY', 'ri')}rif: ${s?replace('ba*', 'XY', 'rif')}  

Output result:

foo bAr XYari: foo XYr XYarif: foo XYr baarr: foo XYAr XYrri: foo XYr XYrrif: foo XYr baar 

More examples:

Original article: str = 2 points for 30 yuan coupon $ {str? Replace ('\ B \ d + credit', ', 'R')} output: redeem a 30 yuan coupon