Question

I need to replace references (properties and methods) in the Velocity templates to some other values during template rendering. For example, from the template below:

___
I have $some text $daisy
#foreach ($someElement in $someCollection)
  #$someElement.doSomething()
#end
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我需要获得这样的案文:

___
I have lalala1 text lalala1
lalala2
lalala2
lalala2
___

Besides, the reason is I don t know the names of references and the amount of them beforehand.

在技术上,我确实可以开放模板,进行人工研究,但我希望逃脱。

First of all, I tried to get references names from the template, working with implementation of ReferenceInsertionEventHandler, but the problem was in directives.

For example, with foreach I had exception "Could not determine type of iterator in #foreach loop" I looked through the velocity source code, I can change it as I need, but it will kill future project maintainability.

So the question is: is there any way to get all references names (properties and methods) from template and to change the values of them during rendering?

Answer 1

我不敢肯定,如果我完全理解你的问题,但如果你想要把一个变数与其他变量(实际上,要作一个前后一致的变数重新命名)相替代,那么你仍然需要知道什么变数将用其他变数取代。

你可以像你一样经常操作速度模板。例如,在第一张通行证中,你可以用其他美元取代某些美元,在第二张通行证中,用你真正想要的最终价值替代其他美元。

然而,为了始终如一地把所有变量(例如宏观变量)纳入模板,我认为,依靠大鼠的工具通常会使用经过修改的版本。例如,在这种情况下,你需要从模板中挑选出一名来访者,并收集ASTVariable ,但我认为这不是一件容易的任务。

例如,outdated example 。

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