string 用 Velocity 模板语言替换字符串的子串
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Replace a Substring of a String in Velocity Template Language
提问by kishore
I want to replace a part of a string in Velocity Template Language with another string.
我想用另一个字符串替换 Velocity 模板语言中字符串的一部分。
For Example:
例如：
#set($a = "Hello")
#set($b = "+")
I want to replace ll in Hello with ++. The output should be He++o
我想用++替换Hello中的ll。输出应该是 He++o
Please help me
请帮我
Thanks Kishore
谢谢基肖尔
回答by Mark McLaren
By default you can use the methods of the Java String object:
默认情况下，您可以使用 Java String 对象的方法：
#set( $a = "Hello" )
#set( $b = $a.replace("l", "+") )
${b}
will produce He++oand you can also use velocity variables as arguments to your method calls, e.g.:
将产生He++o并且您还可以使用速度变量作为方法调用的参数，例如：
#set( $a = "Hello" )
#set( $b = "+" )
#set( $c = $a.replace("l", ${b}) )
${c}
