Hacktoberfest 2026：メンテナが10月に向けて印を付けた、オープンで初心者向けの issue。 Hacktoberfest の issue を見る

Options validation error messages in non-interactive mode

オープン
  • 何か問題がありますか？
#1,390 コメント 2 件 リアクション 0 件 担当者 0 名 GitHub で見る

@czpilar がすでに取り組んでいます。

2026年10月5日 から。

  • #1392 @czpilar による — オープン

評価

難易度
3/5
見積もり時間
1〜2日
初心者へのやさしさ
65/100
issue の種類
機能追加
明瞭さ
おおむね明確
活発さ
活発
技術スタック
java, spring-boot
領域
cli

調査の方向性

Start with NonInteractiveShellRunner, which appears in the reported stack trace, and inspect how validation failures become CommandExecutionException messages. The related customization points named in the issue are CommandExceptionResolver and CommandCatalogCustomizer; done means non-interactive validation exposes the validator's message instead of only USAGE_ERROR, with stack-trace suppression considered separately.

索引モデルが issue の本文から書いたものです。

説明

Using Spring Shell 4.0.3 with Spring Boot 4.0.8, non-interactive mode (spring.shell.interactive.enabled=false).

When I add Bean Validation constraints to my @Options, and I start my application by specifying an argument which does not satisfy them, I get a very generic message, which does not explain at all what went wrong:

2026-10-02T16:45:29.372+02:00 ERROR 15460 --- [MyApp] [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.shell.core.command.CommandExecutionException: Unable to execute command plan -n testGen -c 0: USAGE_ERROR
	at org.springframework.shell.core.NonInteractiveShellRunner.executeCommand(NonInteractiveShellRunner.java:162) ~[spring-shell-core-4.0.3.jar:4.0.3]
	at org.springframework.shell.core.NonInteractiveShellRunner.run(NonInteractiveShellRunner.java:95) ~[spring-shell-core-4.0.3.jar:4.0.3]
	at org.springframework.shell.core.autoconfigure.ShellRunnerAutoConfiguration.lambda$springShellApplicationRunner$0(ShellRunnerAutoConfiguration.java:39) ~[spring-shell-core-autoconfigure-4.0.3.jar:4.0.3]
	at org.springframework.boot.SpringApplication.lambda$callRunner$0(SpringApplication.java:788) ~[spring-boot-4.0.8.jar:4.0.8]
	at org.springframework.util.function.ThrowingConsumer$1.acceptWithException(ThrowingConsumer.java:82) ~[spring-core-7.0.9.jar:7.0.9]
	at org.springframework.util.function.ThrowingConsumer.accept(ThrowingConsumer.java:60) ~[spring-core-7.0.9.jar:7.0.9]
	at org.springframework.util.function.ThrowingConsumer$1.accept(ThrowingConsumer.java:86) ~[spring-core-7.0.9.jar:7.0.9]
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:800) ~[spring-boot-4.0.8.jar:4.0.8]
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:788) ~[spring-boot-4.0.8.jar:4.0.8]
	at org.springframework.boot.SpringApplication.lambda$callRunners$0(SpringApplication.java:776) ~[spring-boot-4.0.8.jar:4.0.8]
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184) ~[na:na]
	at java.base/java.util.stream.SortedOps$SizedRefSortingSink.end(SortedOps.java:357) ~[na:na]
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:510) ~[na:na]
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na]
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151) ~[na:na]
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174) ~[na:na]
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na]
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596) ~[na:na]
	at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:776) ~[spring-boot-4.0.8.jar:4.0.8]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:328) ~[spring-boot-4.0.8.jar:4.0.8]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1365) ~[spring-boot-4.0.8.jar:4.0.8]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1354) ~[spring-boot-4.0.8.jar:4.0.8]
	at example.MyApp.main(MyApp.java:31) ~[classes/:na]

In this case, I was specifying -c 0 while that option has @Min(1).
I would expect in some way to get the contents of the validation error message, as specified on the @Min annotation. Or, more generically, the error message supplied by the validator (in case custom error messages are built by my custom validator).

Asking AI, it suggests a quite complex customization through either CommandCatalogCustomizer or CommandExceptionResolver, which anyway requires to unwrap and inspect the ConstraintViolationException. Isn't there a built-in way to do this?
The default behavior I'm seeing seems to fully defeat the purpose of using the Bean Validation API.

Also suppressing the full stack trace would be nice, however, at least seeing the actual message (even if buried in the stack trace) would be better than nothing. What I'm trying to do is to write a command-line interface fro my Spring Boot app. Thanks!

主要言語
Java
スター
826
フォーク
404
平均マージ
6日 9時間
マージ済み PR（30日）
1

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