Spring中的ClassPathXmlApplicationContext源码详解

public class DaoOperationMain {
	public static void main(String[] args) {
		ApplicationContext appCtx = new ClassPathXmlApplicationContext("applicationContext.xml");
	}
}

/**
 * 并没有太多具体的操作，主要是初始化构造函数，主要的操作都在父类中
 */
public class ClassPathXmlApplicationContext extends AbstractXmlApplicationContext {
	private Resource[] configResources;
	public ClassPathXmlApplicationContext() {
	}
	public ClassPathXmlApplicationContext(ApplicationContext parent) {
		super(parent);
	}
	public ClassPathXmlApplicationContext(String configLocation) throws BeansException {
		this(new String[] {configLocation}, true, null);
	}
	public ClassPathXmlApplicationContext(String... configLocations) throws BeansException {
		this(configLocations, true, null);
	}
	public ClassPathXmlApplicationContext(String[] configLocations, ApplicationContext parent) throws BeansException {
		this(configLocations, true, parent);
	}
	public ClassPathXmlApplicationContext(String[] configLocations, boolean refresh) throws BeansException {
		this(configLocations, refresh, null);
	}
	public ClassPathXmlApplicationContext(String[] configLocations, boolean refresh, ApplicationContext parent)
			throws BeansException {
		super(parent);
		//设置spring的配置文件
		setConfigLocations(configLocations);
		if (refresh) {
			//调用父类的refresh函数，进行一系列初始化
			refresh();
		}
	}
	public ClassPathXmlApplicationContext(String path, Class<?> clazz) throws BeansException {
		this(new String[] {path}, clazz);
	}
	public ClassPathXmlApplicationContext(String[] paths, Class<?> clazz) throws BeansException {
		this(paths, clazz, null);
	}
	public ClassPathXmlApplicationContext(String[] paths, Class<?> clazz, ApplicationContext parent)
			throws BeansException {
		super(parent);
		Assert.notNull(paths, "Path array must not be null");
		Assert.notNull(clazz, "Class argument must not be null");
		this.configResources = new Resource[paths.length];
		for (int i = 0; i < paths.length; i++) {
			this.configResources[i] = new ClassPathResource(paths[i], clazz);
		}
		//调用父类的refresh函数，进行一系列初始化
		refresh();
	}
	@Override
	protected Resource[] getConfigResources() {
		return this.configResources;
	}
}