...
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    ...

...
<dependency>
    <groupId>org.springframework.shell</groupId>
    <artifactId>spring-shell-starter</artifactId>
    <version>2.0.1.RELEASE</version>
</dependency>
...

package com.example.demo;

import org.springframework.shell.standard.ShellMethod;
import org.springframework.shell.standard.ShellComponent;

@ShellComponent
public class MyCommands {

    @ShellMethod("Add two integers together.")
    public int add(int a, int b) {
        return a + b;
    }
}

./mvnw clean install -DskipTests
[...]

java -jar target/demo-0.0.1-SNAPSHOT.jar

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.6.RELEASE)

shell:>

shell:>add 1 2
3

        @ShellMethod(value = "Add numbers.", key = "sum")
        public int add(int a, int b) {
                return a + b;
        }

        @ShellMethod("Display stuff.")
        public String echo(int a, int b, int c) {
                return String.format("You said a=%d, b=%d, c=%d", a, b, c);
        }

shell:>echo 1 2 3               (1)
You said a=1, b=2, c=3

shell:>echo --a 1 --b 2 --c 3   (2)
You said a=1, b=2, c=3

shell:>echo --b 2 --c 3 --a 1   (3)
You said a=1, b=2, c=3

shell:>echo --a 1 2 3           (4)
You said a=1, b=2, c=3

shell:>echo 1 --c 3 2           (5)
You said a=1, b=2, c=3

        @ShellMethod("Say hello.")
        public String greet(@ShellOption(defaultValue="World") String who) {
                return "Hello " + who;
        }

shell:>greet
Hello World

        @ShellMethod("Add Numbers.")
        public float add(@ShellOption(arity=3) float[] numbers) {
                return numbers[0] + numbers[1] + numbers[2];
        }

shell:>add 1 2 3.3
6.3
shell:>add --numbers 1 2 3.3
6.3

        @ShellMethod("Prints what has been entered.")
        public String echo(String what) {
                return "You said " + what;
        }

shell:>echo Hello
You said Hello
shell:>echo 'Hello'
You said Hello
shell:>echo 'Hello World'
You said Hello World
shell:>echo "Hello World"
You said Hello World

shell:>echo "I'm here!"
You said I'm here!
shell:>echo 'He said "Hi!"'
You said He said "Hi!"

shell:>echo 'I\'m here!'
You said I'm here!
shell:>echo "He said \"Hi!\""
You said He said "Hi!"
shell:>echo I\'m here!
You said I'm here!

shell:>echo This\ is\ a\ single\ value
You said This is a single value

shell:>register module --type source --name foo  \ (1)
> --uri file:///tmp/bar
Successfully registered module 'source:foo'

shell:>echo "Hello (1)
dquote> World"
You said Hello World

shell:>help
AVAILABLE COMMANDS
        add: Add numbers together.
      * authenticate: Authenticate with the system.
      * blow-up: Blow Everything up.
        clear: Clear the shell screen.
        connect: Connect to the system
        disconnect: Disconnect from the system.
        exit, quit: Exit the shell.
        help: Display help about available commands.
        register module: Register a new module.
        script: Read and execute commands from a file.
        stacktrace: Display the full stacktrace of the last error.

Commands marked with (*) are currently unavailable.
Type `help <command>` to learn more.

外壳：>帮助帮助


姓名
	help - 显示有关可用命令的帮助。

概要
	帮助 [[-C] 字符串]

选项
	-C 或 --command 字符串
		获取帮助的命令。[可选，默认 = <无>]

shell:>

@Component
public class CustomPromptProvider implements PromptProvider {

        private ConnectionDetails connection;

        @Override
        public AttributedString getPrompt() {
                if (connection != null) {
                        return new AttributedString(connection.getHost() + ":>",
                                AttributedStyle.DEFAULT.foreground(AttributedStyle.YELLOW));
                }
                else {
                        return new AttributedString("server-unknown:>",
                                AttributedStyle.DEFAULT.foreground(AttributedStyle.RED));
                }
        }

        @EventListener
        public void handle(ConnectionUpdatedEvent event) {
                this.connection = event.getConnectionDetails();
        }
}

@Order(InteractiveShellApplicationRunner.PRECEDENCE - 100) // Runs before InteractiveShellApplicationRunner
public class ScriptShellApplicationRunner implements ApplicationRunner {

        @Override
        public void run(ApplicationArguments args) throws Exception {
                List<File> scriptsToRun = args.getNonOptionArgs().stream()
                                .filter(s -> s.startsWith("@"))
                                .map(s -> new File(s.substring(1)))
                                .collect(Collectors.toList());

                boolean batchEnabled = environment.getProperty(SPRING_SHELL_SCRIPT_ENABLED, boolean.class, true);

                if (!scriptsToRun.isEmpty() && batchEnabled) {
                        InteractiveShellApplicationRunner.disable(environment);
                        for (File file : scriptsToRun) {
                                try (Reader reader = new FileReader(file);
                                                FileInputProvider inputProvider = new FileInputProvider(reader, parser)) {
                                        shell.run(inputProvider);
                                }
                        }
                }
        }

...

@ShellComponent
class ConversionCommands {

        @ShellMethod("Shows conversion using Spring converter")
        public String conversionExample(DomainObject object) {
                return object.getClass();
        }

}

class DomainObject {
        private final String value;

        DomainObject(String value) {
                this.value = value;
        }

        public String toString() {
                return value;
        }
}

@Component
class CustomDomainConverter implements Converter<String, DomainObject> {

        @Override
        public DomainObject convert(String source) {
                return new DomainObject(source);
        }
}