以速度输出字符串的一部分 [英] Output part of a string in velocity

问题描述

抱歉，如果我胡言乱语或胡言乱语，但我是速度和这些论坛的新手！

apologies if I waffle or talk a bit of jibberish but I'm new to velocity, and these forums!

我需要检查某个字符的字符串内容，如果出现，则输出文本的第二部分.例如:

I need to check the contents of a string for a certain character and output the second part of the text if it appears. For example:

set ($string = "This is a long string *** but I only want to output this on my email").

我想输出 3 个星号后的所有文本.我已经搜索了论坛，但找不到任何可以完全帮助我的东西.

I want to output all text after the 3 Asterisks. I've scoured the forums but cant quite find anything that helps me completely.

推荐答案

Velocity 只是真实 Java 对象的外观，因此您可以访问所有 String 类 的公共方法，包括 indexOf 和 substring.因此，请尝试以下操作:

Velocity is just a façade for real Java objects, so you have access to all the public methods of the String class, including indexOf and substring. So try something like:

#set ($string = "This is a long string *** but I only want to output this on my email")
#set ($index = $string.indexOf('***'))
#set ($index = $index + 3)
#set ($end = $string.substring($index))

如果您对放入上下文的对象有更多控制权，您可以添加一个 StringUtils 作为辅助工具，然后使用 substringAfter 直接.

If you have more control over what objects you put in the context, you could add an instance of StringUtils as a helper tool, and then use substringAfter directly.

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