Define CommandExceptionResolver bean order

- CommandParserExceptionResolver uses default bean
  order -100.
- Backport #634
- Fixes #635

Author: jvalkeal

spring-shell-core/src/main/java/org/springframework/shell/command/CommandExceptionResolver.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2022 the original author or authors.
+ * Copyright 2022-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -15,6 +15,9 @@
  */
 package org.springframework.shell.command;
 
+import org.springframework.core.Ordered;
+import org.springframework.core.annotation.Order;
+
 /**
  * Interface to be implemented by objects that can resolve exceptions thrown
  * during command processing, in the typical case error response. Implementors
@@ -25,6 +28,11 @@
  */
 public interface CommandExceptionResolver {
 
+	/**
+	 * Default precedence related use of {@link Ordered} and {@link Order}.
+	 */
+	int DEFAULT_PRECEDENCE = -100;
+
 	/**
 	 * Try to resolve the given exception that got thrown during command processing.
 	 *

spring-shell-core/src/main/java/org/springframework/shell/result/ResultHandlerConfig.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017-2022 the original author or authors.
+ * Copyright 2017-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,8 +21,10 @@
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.core.annotation.Order;
 import org.springframework.shell.TerminalSizeAware;
 import org.springframework.shell.command.CommandCatalog;
+import org.springframework.shell.command.CommandExceptionResolver;
 import org.springframework.shell.command.CommandParserExceptionResolver;
 import org.springframework.shell.context.ShellContext;
 import org.springframework.shell.jline.InteractiveShellRunner;
@@ -33,7 +35,7 @@
  * @author Eric Bottard
  * @author Janne Valkealahti
  */
-@Configuration
+@Configuration(proxyBeanMethods = false)
 public class ResultHandlerConfig {
 
 	@Bean
@@ -58,6 +60,7 @@ public ParameterValidationExceptionResultHandler parameterValidationExceptionRes
 	}
 
 	@Bean
+	@Order(CommandExceptionResolver.DEFAULT_PRECEDENCE)
 	public CommandParserExceptionResolver commandParserExceptionResolver() {
 		return new CommandParserExceptionResolver();
 	}

spring-shell-docs/src/main/asciidoc/using-shell-commands-exceptionhandling-resolving.adoc

@@ -45,3 +45,11 @@ you want to define exit code there.
 include::{snippets}/ErrorHandlingSnippets.java[tag=my-exception-class]
 ----
 ====
+
+Some build in `CommandExceptionResolver` beans are registered to handle common
+exceptions thrown from command parsing. These are registered with _order_
+presedence defined in `CommandExceptionResolver.DEFAULT_PRECEDENCE`.
+As these beans are used in a given order, `@Order` annotation or `Ordered`
+interface from can be used just like in any other spring app. This
+is generally useful if you need to control your own beans to get used
+either before or after a defaults.