介绍

Users of the Spring Shell project can easily build a full featured shell ( aka command line) application by depending on the Spring Shell jars and adding their own commands (which come as methods on spring beans). Creating a command line application can be useful e.g. to interact with your project's REST API, or to work with local file content.

特性

Spring Shell's features include

• A simple, annotation driven, programming model to contribute custom commands
• Use of Spring Boot auto-configuration functionality as the basis for a command plugin strategy
• Tab completion, colorization, and script execution
• Customization of command prompt, shell history file name, handling of results and errors
• Dynamic enablement of commands based on domain specific criteria
• Integration with the bean validation API
• Already built-in commands, such as clear screen, gorgeous help, exit
• ASCII art Tables, with formatting, alignment, fancy borders, etc.

快速开始

Then to create a simple command that could be invoked as

shell:>translate "hello world!" --from en_US --to fr_FR
bonjour monde!

assuming you'd have access to some kind of translation service that worked with Locales:

package foo;

@ShellComponent
public class TranslationCommands {

    private final TranslationService service;

    @Autowired
    public TranslationCommands(TranslationService service) {
      this.service = service;
    }

    @ShellMethod"Translate text from one language to another.")
    public String translate(
      @ShellOption(mandatory = true) String text,
      @ShellOption(mandatory = true, defaultValue = "en_US") Locale from,
      @ShellOption(mandatory = true) Locate to
    ) {
      // invoke service
      return service.translate(text, from, to);
    }
}