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：
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<#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
${str?replace('\\b\\d+积分','','r')}
输出：兑换30元优惠券
ps：freemarker的replace功能
替换字符串 replace
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${s?replace(‘ba', ‘XY' )} ${s?replace(‘ba', ‘XY' , ‘规则参数')} |
将s里的所有的ba替换成xy 规则参数包含: i r m s c f 具体含义如下:
· i: 大小写不区分.
· f: 只替换第一个出现被替换字符串的字符串
· r: XY是正则表达式
· 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.
· s: Enables dotall mode for regular expressions (same as Perl singe-line mode). In dotall 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.
