springboot日志文件名称为什么叫logback-spring.xml

如题，为什么springboot日志配置文件叫logback-spring.xml？

在整个项目中搜索 logback-spring.xml 并没有搜索到。

先看一下

org.springframework.boot.context.logging.LoggingApplicationListener#initialize

	protected void initialize(ConfigurableEnvironment environment, ClassLoader classLoader) {// 省略initializeSystem(environment, this.loggingSystem, this.logFile);// ... 省略}

 会走到

org.springframework.boot.logging.AbstractLoggingSystem#initializeWithConventions

如下代码完成 日志配置文件的定位，最终获取到 logback-spring.xml日志配置文件咯

@Overrideprotected String[] getStandardConfigLocations() {return new String[] { "logback-test.groovy", "logback-test.xml", "logback.groovy", "logback.xml" };}	protected String[] getSpringConfigLocations() {String[] locations = getStandardConfigLocations();for (int i = 0; i < locations.length; i++) {String extension = StringUtils.getFilenameExtension(locations[i]);locations[i] = locations[i].substring(0, locations[i].length() - extension.length() - 1) + "-spring."+ extension;}return locations;}