如何编写一个没有输入参数的 FreeMarker 模板 function

Question

Is it possible to write a FTL function with no input parameters?

Like in Java where you can write void test() {} , which takes no arguments and returns nothing.

I have read the documentation . But could not find much information on this particular topic.

Answer 1

Not taking any arguments is just like <#function f>...</#function> .

Not returning a value is also possible by simply not calling <#return someValue> , and reaching </#function> . However, a function that returns nothing is generally a bad idea. Then it's more likely that what you want is a macro (see the macro directive). In FTL functions are about returning a value, while macros are about side-effects (like printing to the output, or launching a rocket).