25 lines
794 B
Plaintext
25 lines
794 B
Plaintext
[[validating-command-arguments]]
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= Validation
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Spring Shell integrates with the https://beanvalidation.org/[Bean Validation API] to support
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automatic and self-documenting constraints on command parameters.
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Annotations found on command parameters and annotations at the method level are
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honored and trigger validation prior to the command executing. Consider the following command:
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[source, java]
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----
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@ShellMethod("Change password.")
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public String changePassword(@Size(min = 8, max = 40) String password) {
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return "Password successfully set to " + password;
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}
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----
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From the preceding example, you get the following behavior for free:
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----
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shell:>change-password hello
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The following constraints were not met:
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--password string : size must be between 8 and 40 (You passed 'hello')
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----
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