spring NotConstructorBoundInjectionFailureAnalyzer 源码
springboot NotConstructorBoundInjectionFailureAnalyzer 代码
文件路径:/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/NotConstructorBoundInjectionFailureAnalyzer.java
/*
* Copyright 2012-2021 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.boot.context.properties;
import java.lang.reflect.Constructor;
import org.springframework.beans.factory.InjectionPoint;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.UnsatisfiedDependencyException;
import org.springframework.boot.context.properties.ConfigurationPropertiesBean.BindMethod;
import org.springframework.boot.diagnostics.FailureAnalysis;
import org.springframework.boot.diagnostics.analyzer.AbstractInjectionFailureAnalyzer;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.MergedAnnotation;
import org.springframework.core.annotation.MergedAnnotations;
/**
* An {@link AbstractInjectionFailureAnalyzer} for
* {@link ConfigurationProperties @ConfigurationProperties} that are intended to use
* {@link ConstructorBinding constructor binding} but did not.
*
* @author Andy Wilkinson
*/
class NotConstructorBoundInjectionFailureAnalyzer
extends AbstractInjectionFailureAnalyzer<NoSuchBeanDefinitionException> implements Ordered {
@Override
public int getOrder() {
return 0;
}
@Override
protected FailureAnalysis analyze(Throwable rootFailure, NoSuchBeanDefinitionException cause, String description) {
InjectionPoint injectionPoint = findInjectionPoint(rootFailure);
if (isConstructorBindingConfigurationProperties(injectionPoint)) {
String simpleName = injectionPoint.getMember().getDeclaringClass().getSimpleName();
String action = String.format("Update your configuration so that " + simpleName + " is defined via @"
+ ConfigurationPropertiesScan.class.getSimpleName() + " or @"
+ EnableConfigurationProperties.class.getSimpleName() + ".", simpleName);
return new FailureAnalysis(
simpleName + " is annotated with @" + ConstructorBinding.class.getSimpleName()
+ " but it is defined as a regular bean which caused dependency injection to fail.",
action, cause);
}
return null;
}
private boolean isConstructorBindingConfigurationProperties(InjectionPoint injectionPoint) {
if (injectionPoint != null && injectionPoint.getMember() instanceof Constructor) {
Constructor<?> constructor = (Constructor<?>) injectionPoint.getMember();
Class<?> declaringClass = constructor.getDeclaringClass();
MergedAnnotation<ConfigurationProperties> configurationProperties = MergedAnnotations.from(declaringClass)
.get(ConfigurationProperties.class);
return configurationProperties.isPresent()
&& BindMethod.forType(constructor.getDeclaringClass()) == BindMethod.VALUE_OBJECT;
}
return false;
}
private InjectionPoint findInjectionPoint(Throwable failure) {
UnsatisfiedDependencyException unsatisfiedDependencyException = findCause(failure,
UnsatisfiedDependencyException.class);
if (unsatisfiedDependencyException == null) {
return null;
}
return unsatisfiedDependencyException.getInjectionPoint();
}
}
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