java中的字符串替换，类似于velocity模板 [英] String replacement in java, similar to a velocity template

问题描述

Java 中是否有任何 String 替换机制，我可以在其中传递带有文本的对象，并在字符串出现时替换它.
例如，文字是:

Is there any String replacement mechanism in Java, where I can pass objects with a text, and it replaces the string as it occurs.
For example, the text is :

Hello ${user.name},
    Welcome to ${site.name}. 

我拥有的对象是 "user" 和 "site".我想用对象中的等效值替换 ${} 中给出的字符串.这与我们替换速度模板中的对象相同.

The objects I have are "user" and "site". I want to replace the strings given inside ${} with its equivalent values from the objects. This is same as we replace objects in a velocity template.

推荐答案

使用 Apache Commons Text 中的 StringSubstitutor.

Use StringSubstitutor from Apache Commons Text.

https://commons.apache.org/proper/commons-text/

它会为你做这件事(以及它的开源......)

It will do it for you (and its open source...)

 Map<String, String> valuesMap = new HashMap<String, String>();
 valuesMap.put("animal", "quick brown fox");
 valuesMap.put("target", "lazy dog");
 String templateString = "The ${animal} jumped over the ${target}.";
 StringSubstitutor sub = new StringSubstitutor(valuesMap);
 String resolvedString = sub.replace(templateString);

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