Spring/spring-framework
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Polishing

Browse Source
This commit is contained in:
Juergen Hoeller
2019-07-30 16:59:01 +02:00
parent 74658789ee
commit 215caedd30
11 changed files with 145 additions and 137 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
spring-messaging/src/main/java/org/springframework/messaging/handler/invocation/HandlerMethodArgumentResolverComposite.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2018 the original author or authors.
* Copyright 2002-2019 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.
@@ -28,8 +28,8 @@ import org.springframework.messaging.Message;
/**
* Resolves method parameters by delegating to a list of registered
* {@link HandlerMethodArgumentResolver}. Previously resolved method parameters are cached
* for faster lookups.
* {@link HandlerMethodArgumentResolver HandlerMethodArgumentResolvers}.
* Previously resolved method parameters are cached for faster lookups.
*
* @author Rossen Stoyanchev
* @author Juergen Hoeller
@@ -52,28 +52,24 @@ public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgu
}
/**
* Add the given {@link HandlerMethodArgumentResolver}s.
* Add the given {@link HandlerMethodArgumentResolver HandlerMethodArgumentResolvers}.
* @since 4.3
*/
public HandlerMethodArgumentResolverComposite addResolvers(@Nullable HandlerMethodArgumentResolver... resolvers) {
if (resolvers != null) {
for (HandlerMethodArgumentResolver resolver : resolvers) {
this.argumentResolvers.add(resolver);
}
Collections.addAll(this.argumentResolvers, resolvers);
}
return this;
}
/**
* Add the given {@link HandlerMethodArgumentResolver}s.
* Add the given {@link HandlerMethodArgumentResolver HandlerMethodArgumentResolvers}.
*/
public HandlerMethodArgumentResolverComposite addResolvers(
@Nullable List<? extends HandlerMethodArgumentResolver> argumentResolvers) {
if (argumentResolvers != null) {
for (HandlerMethodArgumentResolver resolver : argumentResolvers) {
this.argumentResolvers.add(resolver);
}
this.argumentResolvers.addAll(argumentResolvers);
}
return this;
}
@@ -94,8 +90,8 @@ public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgu
/**
* Whether the given {@linkplain MethodParameter method parameter} is supported by any registered
* {@link HandlerMethodArgumentResolver}.
* Whether the given {@linkplain MethodParameter method parameter} is
* supported by any registered {@link HandlerMethodArgumentResolver}.
*/
@Override
public boolean supportsParameter(MethodParameter parameter) {
@@ -103,21 +99,26 @@ public class HandlerMethodArgumentResolverComposite implements HandlerMethodArgu
}
/**
* Iterate over registered {@link HandlerMethodArgumentResolver}s and invoke the one that supports it.
* @throws IllegalStateException if no suitable {@link HandlerMethodArgumentResolver} is found.
* Iterate over registered
* {@link HandlerMethodArgumentResolver HandlerMethodArgumentResolvers}
* and invoke the one that supports it.
* @throws IllegalStateException if no suitable
* {@link HandlerMethodArgumentResolver} is found.
*/
@Override
@Nullable
public Object resolveArgument(MethodParameter parameter, Message<?> message) throws Exception {
HandlerMethodArgumentResolver resolver = getArgumentResolver(parameter);
if (resolver == null) {
throw new IllegalStateException("Unknown parameter type [" + parameter.getParameterType().getName() + "]");
throw new IllegalArgumentException("Unsupported parameter type [" +
parameter.getParameterType().getName() + "]. supportsParameter should be called first.");
}
return resolver.resolveArgument(parameter, message);
}
/**
* Find a registered {@link HandlerMethodArgumentResolver} that supports the given method parameter.
* Find a registered {@link HandlerMethodArgumentResolver} that supports
* the given method parameter.
*/
@Nullable
private HandlerMethodArgumentResolver getArgumentResolver(MethodParameter parameter) {