spring MethodArgumentResolutionException 源码
spring MethodArgumentResolutionException 代码
文件路径：/spring-messaging/src/main/java/org/springframework/messaging/handler/invocation/MethodArgumentResolutionException.java
/*
* Copyright 2002-2017 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.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.messaging.handler.invocation;
import org.springframework.core.MethodParameter;
import org.springframework.lang.Nullable;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessagingException;
/**
* Common exception resulting from the invocation of
* {@link org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolver}.
*
* @author Juergen Hoeller
* @since 4.3.6
* @see HandlerMethodArgumentResolver
*/
@SuppressWarnings("serial")
public class MethodArgumentResolutionException extends MessagingException {
private final MethodParameter parameter;
/**
* Create a new instance providing the invalid {@code MethodParameter}.
*/
public MethodArgumentResolutionException(Message<?> message, MethodParameter parameter) {
super(message, getMethodParameterMessage(parameter));
this.parameter = parameter;
}
/**
* Create a new instance providing the invalid {@code MethodParameter} and
* a prepared description.
*/
public MethodArgumentResolutionException(Message<?> message, MethodParameter parameter, String description) {
super(message, getMethodParameterMessage(parameter) + ": " + description);
this.parameter = parameter;
}
/**
* Create a new instance providing the invalid {@code MethodParameter},
* prepared description, and a cause.
*/
public MethodArgumentResolutionException(
Message<?> message, MethodParameter parameter, String description, @Nullable Throwable cause) {
super(message, getMethodParameterMessage(parameter) + ": " + description, cause);
this.parameter = parameter;
}
/**
* Return the MethodParameter that was rejected.
*/
public final MethodParameter getMethodParameter() {
return this.parameter;
}
private static String getMethodParameterMessage(MethodParameter parameter) {
return "Could not resolve method parameter at index " + parameter.getParameterIndex() +
" in " + parameter.getExecutable().toGenericString();
}
}
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