Spring Boot 配置文件application加載順序

 

1.Spring Boot啓動會掃描以下位置的application.properties或者application.yml文件作爲Spring Boot 的默認配置文件

①: - file(項目文件):./config/

②: - file(項目文件):./

③: - classpath(resources類路徑):/config/

④: - classpath(resources類路徑):/

優先級按①②③④從高到低的順序,所有位置的文件都會被加載,高優先級配置內容會覆蓋低優先級配置的內容

spring 源碼如下：

public class ConfigFileApplicationListener
		implements EnvironmentPostProcessor, SmartApplicationListener, Ordered {

	private static final String DEFAULT_PROPERTIES = "defaultProperties";

	// Note the order is from least to most specific (last one wins)
	private static final String DEFAULT_SEARCH_LOCATIONS = "classpath:/,classpath:/config/,file:./,file:./config/";

	private static final String DEFAULT_NAMES = "application";

	private static final Set<String> NO_SEARCH_NAMES = Collections.singleton(null);

	/**
	 * The "active profiles" property name.
	 */
	public static final String ACTIVE_PROFILES_PROPERTY = "spring.profiles.active";

可以通過@value 來讀取配置了