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接著上一章節(jié)的內容，我們來分析當new一個FileSystemXmlApplicationContext對象的時候，spring到底做了那些事。FileSystemXmlApplicationContext類的內容主要是定義了若干重載的構造方法，核心構造方法如下：
/**
* Create a new FileSystemXmlApplicationContext with the given parent,
* loading the definitions from the given XML files.
*
* loading all bean definitions and creating all singletons.
* Alternatively, call refresh manually after further configuring the context.
*
*/
public FileSystemXmlApplicationContext(
String[] configLocations, boolean refresh, @Nullable ApplicationContext parent) throws BeansException { super(parent);
setConfigLocations(configLocations); if (refresh) {
refresh();
}
}
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