Java uses regular expressions to implement string template instances in the form of ${name}
preface
I believe you may have encountered this situation. We often use string templates when developing requirements similar to station letters, such as
The ${name} inside can be replaced by the user's user name.
The following is a simple implementation of this function using regular expressions:
The key value pairs are stored in the map, then the collection of key value pairs is obtained, and the collection is traversed to render the string
Example test:
Two variables need to be replaced, name and six. The corresponding values are Java and 6 respectively. At the same time, name is called twice.
result:
summary
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