Spring Boot 技术知识点：如何理解@PropertySource注解

package com.fm.property.source; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.CommandLineRunner; import org.springframework.stereotype.Component; /** * @author 未来码匠 */ @Component public class OutputPropsRunner implements CommandLineRunner { private static final Logger LOGGER = LoggerFactory.getLogger(OutputPropsRunner.class); @Autowired private ReadByPropertySourceAndValueYaml readByPropertySourceAndValueYaml; @Autowired private ReadByPropertySourceAndValueYml readByPropertySourceAndValueYml; @Autowired private ReadByPropertySourceAndValueProperties readByPropertySourceAndValueProperties; @Autowired private ReadByPropertySourceAndValueXml readByPropertySourceAndValueXml; @Autowired private ReadByPropertySourceAndValueManyYml readByPropertySourceAndValueManyYml; @Autowired private ReadByPropertySourceAndConfYml readByPropertySourceAndConfYml; @Autowired private ReadByPropertySourceAndConfYaml readByPropertySourceAndConfYaml; @Autowired private ReadByPropertySourceAndConfProperties readByPropertySourceAndConfProperties; @Autowired private ReadByPropertySourceAndConfXml readByPropertySourceAndConfXml; @Autowired private ReadByPropertySourceAndConfManyYml readByPropertySourceAndConfManyYml; @Override public void run(String... args){ LOGGER.info(readByPropertySourceAndValueYaml.toString()); LOGGER.info(readByPropertySourceAndValueYml.toString()); LOGGER.info(readByPropertySourceAndValueProperties.toString()); LOGGER.info(readByPropertySourceAndValueXml.toString()); LOGGER.info(readByPropertySourceAndConfYml.toString()); LOGGER.info(readByPropertySourceAndConfYaml.toString()); LOGGER.info(readByPropertySourceAndConfProperties.toString()); LOGGER.info(readByPropertySourceAndConfXml.toString()); LOGGER.info(readByPropertySourceAndValueManyYml.toString()); LOGGER.info(readByPropertySourceAndConfManyYml.toString()); } }