spring BeanInstantiationException 源码

spring BeanInstantiationException 代码

文件路径：/spring-beans/src/main/java/org/springframework/beans/BeanInstantiationException.java

/*
 * Copyright 2002-2018 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.beans;

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;

import org.springframework.lang.Nullable;

/**
 * Exception thrown when instantiation of a bean failed.
 * Carries the offending bean class.
 *
 * @author Juergen Hoeller
 * @since 1.2.8
 */
@SuppressWarnings("serial")
public class BeanInstantiationException extends FatalBeanException {

	private final Class<?> beanClass;

	@Nullable
	private final Constructor<?> constructor;

	@Nullable
	private final Method constructingMethod;


	/**
	 * Create a new BeanInstantiationException.
	 * @param beanClass the offending bean class
	 * @param msg the detail message
	 */
	public BeanInstantiationException(Class<?> beanClass, String msg) {
		this(beanClass, msg, null);
	}

	/**
	 * Create a new BeanInstantiationException.
	 * @param beanClass the offending bean class
	 * @param msg the detail message
	 * @param cause the root cause
	 */
	public BeanInstantiationException(Class<?> beanClass, String msg, @Nullable Throwable cause) {
		super("Failed to instantiate [" + beanClass.getName() + "]: " + msg, cause);
		this.beanClass = beanClass;
		this.constructor = null;
		this.constructingMethod = null;
	}

	/**
	 * Create a new BeanInstantiationException.
	 * @param constructor the offending constructor
	 * @param msg the detail message
	 * @param cause the root cause
	 * @since 4.3
	 */
	public BeanInstantiationException(Constructor<?> constructor, String msg, @Nullable Throwable cause) {
		super("Failed to instantiate [" + constructor.getDeclaringClass().getName() + "]: " + msg, cause);
		this.beanClass = constructor.getDeclaringClass();
		this.constructor = constructor;
		this.constructingMethod = null;
	}

	/**
	 * Create a new BeanInstantiationException.
	 * @param constructingMethod the delegate for bean construction purposes
	 * (typically, but not necessarily, a static factory method)
	 * @param msg the detail message
	 * @param cause the root cause
	 * @since 4.3
	 */
	public BeanInstantiationException(Method constructingMethod, String msg, @Nullable Throwable cause) {
		super("Failed to instantiate [" + constructingMethod.getReturnType().getName() + "]: " + msg, cause);
		this.beanClass = constructingMethod.getReturnType();
		this.constructor = null;
		this.constructingMethod = constructingMethod;
	}


	/**
	 * Return the offending bean class (never {@code null}).
	 * @return the class that was to be instantiated
	 */
	public Class<?> getBeanClass() {
		return this.beanClass;
	}

	/**
	 * Return the offending constructor, if known.
	 * @return the constructor in use, or {@code null} in case of a
	 * factory method or in case of default instantiation
	 * @since 4.3
	 */
	@Nullable
	public Constructor<?> getConstructor() {
		return this.constructor;
	}

	/**
	 * Return the delegate for bean construction purposes, if known.
	 * @return the method in use (typically a static factory method),
	 * or {@code null} in case of constructor-based instantiation
	 * @since 4.3
	 */
	@Nullable
	public Method getConstructingMethod() {
		return this.constructingMethod;
	}

}

相关信息

spring 源码目录

相关文章

spring AbstractNestablePropertyAccessor 源码

spring AbstractPropertyAccessor 源码

spring BeanInfoFactory 源码

spring BeanMetadataAttribute 源码

spring BeanMetadataAttributeAccessor 源码

spring BeanMetadataElement 源码

spring BeanUtils 源码

spring BeanWrapper 源码

spring BeanWrapperImpl 源码

spring BeansException 源码