spring IgnoreTopLevelConverterNotFoundBindHandler 源码

2022-08-12
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springboot IgnoreTopLevelConverterNotFoundBindHandler 代码

文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/context/properties/bind/handler/IgnoreTopLevelConverterNotFoundBindHandler.java

/*
 * Copyright 2012-2019 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.
 * 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.bind.handler;

import org.springframework.boot.context.properties.bind.AbstractBindHandler;
import org.springframework.boot.context.properties.bind.BindContext;
import org.springframework.boot.context.properties.bind.BindHandler;
import org.springframework.boot.context.properties.bind.Bindable;
import org.springframework.boot.context.properties.source.ConfigurationPropertyName;
import org.springframework.core.convert.ConverterNotFoundException;

/**
 * {@link BindHandler} that can be used to ignore top-level
 * {@link ConverterNotFoundException}s.
 *
 * @author Madhura Bhave
 * @since 2.0.1
 */
public class IgnoreTopLevelConverterNotFoundBindHandler extends AbstractBindHandler {

	/**
	 * Create a new {@link IgnoreTopLevelConverterNotFoundBindHandler} instance.
	 */
	public IgnoreTopLevelConverterNotFoundBindHandler() {
	}

	/**
	 * Create a new {@link IgnoreTopLevelConverterNotFoundBindHandler} instance with a
	 * specific parent.
	 * @param parent the parent handler
	 */
	public IgnoreTopLevelConverterNotFoundBindHandler(BindHandler parent) {
		super(parent);
	}

	@Override
	public Object onFailure(ConfigurationPropertyName name, Bindable<?> target, BindContext context, Exception error)
			throws Exception {
		if (context.getDepth() == 0 && error instanceof ConverterNotFoundException) {
			return null;
		}
		throw error;
	}

}

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所属分类： 后端技术
本文标签： Spring Boot Java Spring
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