spring ValidationAutoConfiguration 源码

springboot ValidationAutoConfiguration 代码

文件路径：/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/validation/ValidationAutoConfiguration.java

/*
 * Copyright 2012-2022 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.autoconfigure.validation;

import jakarta.validation.Validator;
import jakarta.validation.executable.ExecutableValidator;

import org.springframework.beans.factory.ObjectProvider;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnResource;
import org.springframework.boot.autoconfigure.condition.SearchStrategy;
import org.springframework.boot.validation.MessageInterpolatorFactory;
import org.springframework.boot.validation.beanvalidation.FilteredMethodValidationPostProcessor;
import org.springframework.boot.validation.beanvalidation.MethodValidationExcludeFilter;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.Lazy;
import org.springframework.context.annotation.Role;
import org.springframework.core.env.Environment;
import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
import org.springframework.validation.beanvalidation.MethodValidationPostProcessor;

/**
 * {@link EnableAutoConfiguration Auto-configuration} to configure the validation
 * infrastructure.
 *
 * @author Stephane Nicoll
 * @author Madhura Bhave
 * @since 1.5.0
 */
@AutoConfiguration
@ConditionalOnClass(ExecutableValidator.class)
@ConditionalOnResource(resources = "classpath:META-INF/services/jakarta.validation.spi.ValidationProvider")
@Import(PrimaryDefaultValidatorPostProcessor.class)
public class ValidationAutoConfiguration {

	@Bean
	@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
	@ConditionalOnMissingBean(Validator.class)
	public static LocalValidatorFactoryBean defaultValidator(ApplicationContext applicationContext,
			ObjectProvider<ValidationConfigurationCustomizer> customizers) {
		LocalValidatorFactoryBean factoryBean = new LocalValidatorFactoryBean();
		factoryBean.setConfigurationInitializer((configuration) -> customizers.orderedStream()
				.forEach((customizer) -> customizer.customize(configuration)));
		MessageInterpolatorFactory interpolatorFactory = new MessageInterpolatorFactory(applicationContext);
		factoryBean.setMessageInterpolator(interpolatorFactory.getObject());
		return factoryBean;
	}

	@Bean
	@ConditionalOnMissingBean(search = SearchStrategy.CURRENT)
	public static MethodValidationPostProcessor methodValidationPostProcessor(Environment environment,
			@Lazy Validator validator, ObjectProvider<MethodValidationExcludeFilter> excludeFilters) {
		FilteredMethodValidationPostProcessor processor = new FilteredMethodValidationPostProcessor(
				excludeFilters.orderedStream());
		boolean proxyTargetClass = environment.getProperty("spring.aop.proxy-target-class", Boolean.class, true);
		processor.setProxyTargetClass(proxyTargetClass);
		processor.setValidator(validator);
		return processor;
	}

}

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