What is the process used by Freemarker?

The general process used in Freemarker is as follows:

1. Introducing the Freemarker library: To introduce the Freemarker library into the project, you can do so either through Maven or by manually adding the dependencies.
2. To create a Configuration object, you first need to create an instance of Configuration to configure the properties and parameters of Freemarker. You can set the template file path, encoding, and other attributes of Freemarker.
3. Load template file: Use the getTemplate() method of the Configuration object to load the template file, which accepts the path of the template file as a parameter and returns a Template object.
4. Create data models: Prepare data models. These are the data that will be used in the template, and can take the form of Java objects, maps, lists, and so on.
5. Merge the data model and template: combine the data model and template using the process() method of the Template object to generate the final output.
6. Output the merged results to a destination location, which can be a file, string, HTTP response, etc.

The above is the general process of using Freemarker, which can be adjusted and expanded according to specific needs and scenarios.