Spring之ClassPathXmlApplicationContext

最新推荐文章于 2025-01-13 14:04:05 发布

天明少侠

最新推荐文章于 2025-01-13 14:04:05 发布

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分类专栏： spring Spring源码跟读文章标签： ClassPathXmlApplicationContext Spring 源码

本文链接：https://blog.youkuaiyun.com/thebigdipperbdx/article/details/86711792

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本文详细解析了Spring框架中ClassPathXmlApplicationContext类的功能与使用方法，包括构造函数、资源加载、配置刷新等核心机制，为开发者提供深入理解与实践指导。

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源码

package org.springframework.context.support;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.util.Assert;

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);
	}
	// JDK5可变参数（Varargs）
	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);
		// 传入String数组configLocations
		setConfigLocations(configLocations);
		if (refresh) {
			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);
		}
		refresh();
	}


	@Override
	protected Resource[] getConfigResources() {
		return this.configResources;
	}

}