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Freemaker Replace函数的正则表达式运用
网友分享于:Jan 1, 1970 8:00:00 AM    来源: IT货架   

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replace(param1,param2,param3)

param1 正则表达式;param2 将匹配的字符替换成指定字符;param3 模式

param3 参数如下

 模式  i   r   m   s   c   f 
replace 支持  支持  只和r 组合 只和r 组合 只和r 组合 支持

 

 

模式解释:

i: Case insensitive: 忽略大小写

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

r: The substring to find is a regular expression.标准正则表达式(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.在正则表达式中允许空格和注释。

范例如下:

<#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)}  

输出结果:

foo bAr XYar
i: foo XYr XYar
if: foo XYr baar
r: foo XYAr XYr
ri: foo XYr XYr
rif: foo XYr baar 

更多范例:

原文:str = 2积分兑换30元优惠券
${str?replace(\\b\\d+积分,‘‘,r)} 
输出:兑换30元优惠券

更多信息可以参考:

http://freemarker.org/docs/ref_builtins_string.html#ref_builtin_replace

Freemaker Replace函数的正则表达式运用

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