Consistent API between spring-web and spring-messaging HandlerMethod infrastructure

Issue: SPR-13929

spring-messaging/src/main/java/org/springframework/messaging/handler/invocation/HandlerMethodArgumentResolverComposite.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -32,6 +32,7 @@ import org.springframework.util.Assert;
  * for faster lookups.
  *
  * @author Rossen Stoyanchev
+ * @author Juergen Hoeller
  * @since 4.0
  */
 public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgumentResolver {
@@ -42,6 +43,39 @@ public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgu
 			new ConcurrentHashMap<MethodParameter, HandlerMethodArgumentResolver>(256);
 
 
+	/**
+	 * Add the given {@link HandlerMethodArgumentResolver}.
+	 */
+	public HandlerMethodArgumentResolverComposite addResolver(HandlerMethodArgumentResolver argumentResolver) {
+		this.argumentResolvers.add(argumentResolver);
+		return this;
+	}
+
+	/**
+	 * Add the given {@link HandlerMethodArgumentResolver}s.
+	 * @since 4.3
+	 */
+	public HandlerMethodArgumentResolverComposite addResolvers(HandlerMethodArgumentResolver... resolvers) {
+		if (resolvers != null) {
+			for (HandlerMethodArgumentResolver resolver : resolvers) {
+				this.argumentResolvers.add(resolver);
+			}
+		}
+		return this;
+	}
+
+	/**
+	 * Add the given {@link HandlerMethodArgumentResolver}s.
+	 */
+	public HandlerMethodArgumentResolverComposite addResolvers(List<? extends HandlerMethodArgumentResolver> argumentResolvers) {
+		if (argumentResolvers != null) {
+			for (HandlerMethodArgumentResolver resolver : argumentResolvers) {
+				this.argumentResolvers.add(resolver);
+			}
+		}
+		return this;
+	}
+
 	/**
 	 * Return a read-only list with the contained resolvers, or an empty list.
 	 */
@@ -56,6 +90,7 @@ public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgu
 		this.argumentResolvers.clear();
 	}
 
+
 	/**
 	 * Whether the given {@linkplain MethodParameter method parameter} is supported by any registered
 	 * {@link HandlerMethodArgumentResolver}.
@@ -94,24 +129,4 @@ public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgu
 		return result;
 	}
 
-	/**
-	 * Add the given {@link HandlerMethodArgumentResolver}.
-	 */
-	public HandlerMethodArgumentResolverComposite addResolver(HandlerMethodArgumentResolver argumentResolver) {
-		this.argumentResolvers.add(argumentResolver);
-		return this;
-	}
-
-	/**
-	 * Add the given {@link HandlerMethodArgumentResolver}s.
-	 */
-	public HandlerMethodArgumentResolverComposite addResolvers(List<? extends HandlerMethodArgumentResolver> argumentResolvers) {
-		if (argumentResolvers != null) {
-			for (HandlerMethodArgumentResolver resolver : argumentResolvers) {
-				this.argumentResolvers.add(resolver);
-			}
-		}
-		return this;
-	}
-
 }

spring-messaging/src/main/java/org/springframework/messaging/handler/invocation/InvocableHandlerMethod.java

@@ -34,8 +34,7 @@ import org.springframework.util.ReflectionUtils;
  * Provides a method for invoking the handler method for a given message after resolving its
  * method argument values through registered {@link HandlerMethodArgumentResolver}s.
  *
- * <p>Use {@link #setMessageMethodArgumentResolvers(HandlerMethodArgumentResolver)}
- * to customize the list of argument resolvers.
+ * <p>Use {@link #setMessageMethodArgumentResolvers} to customize the list of argument resolvers.
  *
  * @author Rossen Stoyanchev
  * @author Juergen Hoeller
@@ -43,7 +42,7 @@ import org.springframework.util.ReflectionUtils;
  */
 public class InvocableHandlerMethod extends HandlerMethod {
 
-	private HandlerMethodArgumentResolver argumentResolvers = new HandlerMethodArgumentResolverComposite();
+	private HandlerMethodArgumentResolverComposite argumentResolvers = new HandlerMethodArgumentResolverComposite();
 
 	private ParameterNameDiscoverer parameterNameDiscoverer = new DefaultParameterNameDiscoverer();
 
@@ -79,7 +78,7 @@ public class InvocableHandlerMethod extends HandlerMethod {
 	/**
 	 * Set {@link HandlerMethodArgumentResolver}s to use to use for resolving method argument values.
 	 */
-	public void setMessageMethodArgumentResolvers(HandlerMethodArgumentResolver argumentResolvers) {
+	public void setMessageMethodArgumentResolvers(HandlerMethodArgumentResolverComposite argumentResolvers) {
 		this.argumentResolvers = argumentResolvers;
 	}
 
@@ -199,7 +198,8 @@ public class InvocableHandlerMethod extends HandlerMethod {
 		}
 		catch (IllegalArgumentException ex) {
 			assertTargetBean(getBridgedMethod(), getBean(), args);
-			throw new IllegalStateException(getInvocationErrorMessage(ex.getMessage(), args), ex);
+			String message = (ex.getMessage() != null ? ex.getMessage() : "Illegal argument");
+			throw new IllegalStateException(getInvocationErrorMessage(message, args), ex);
 		}
 		catch (InvocationTargetException ex) {
 			// Unwrap for HandlerExceptionResolvers ...