spring InvalidConfigurationPropertyNameFailureAnalyzer 源码

  • 2022-08-12
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springboot InvalidConfigurationPropertyNameFailureAnalyzer 代码

文件路径:/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/diagnostics/analyzer/InvalidConfigurationPropertyNameFailureAnalyzer.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.diagnostics.analyzer;

import java.util.stream.Collectors;

import org.springframework.beans.factory.BeanCreationException;
import org.springframework.boot.context.properties.source.InvalidConfigurationPropertyNameException;
import org.springframework.boot.diagnostics.AbstractFailureAnalyzer;
import org.springframework.boot.diagnostics.FailureAnalysis;

/**
 * An {@link AbstractFailureAnalyzer} that performs analysis of failures caused by
 * {@link InvalidConfigurationPropertyNameException}.
 *
 * @author Madhura Bhave
 */
class InvalidConfigurationPropertyNameFailureAnalyzer
		extends AbstractFailureAnalyzer<InvalidConfigurationPropertyNameException> {

	@Override
	protected FailureAnalysis analyze(Throwable rootFailure, InvalidConfigurationPropertyNameException cause) {
		BeanCreationException exception = findCause(rootFailure, BeanCreationException.class);
		String action = String.format("Modify '%s' so that it conforms to the canonical names requirements.",
				cause.getName());
		return new FailureAnalysis(buildDescription(cause, exception), action, cause);
	}

	private String buildDescription(InvalidConfigurationPropertyNameException cause, BeanCreationException exception) {
		StringBuilder description = new StringBuilder(
				String.format("Configuration property name '%s' is not valid:%n", cause.getName()));
		String invalid = cause.getInvalidCharacters().stream().map(this::quote).collect(Collectors.joining(", "));
		description.append(String.format("%n    Invalid characters: %s", invalid));
		if (exception != null) {
			description.append(String.format("%n    Bean: %s", exception.getBeanName()));
		}
		description.append(String.format("%n    Reason: Canonical names should be "
				+ "kebab-case ('-' separated), lowercase alpha-numeric characters and must start with a letter"));
		return description.toString();
	}

	private String quote(Character c) {
		return "'" + c + "'";
	}

}

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