Spring对象的创建和属性的赋值的简单例子

最新推荐文章于 2024-07-17 22:18:31 发布

原创最新推荐文章于 2024-07-17 22:18:31 发布 · 442 阅读

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本文探讨了Spring框架中如何从不同路径加载配置文件，并通过Spring容器创建对象的过程。包括从类路径、文件系统和根目录加载配置，以及获取容器中创建的对象数量。

创建对象并赋值

@Test
public void fromSrc() {
	String path = "applicationContext.xml";
	ApplicationContext ac = new ClassPathXmlApplicationContext(path);
	TestService ts = (TestService) ac.getBean("testService");
	ts.interfaceOne();
}
@Test
public void fromRoute() {
	String path = "e:" + File.separator + "path" + File.separator + "eclipsepathOfdljdfuxi" + File.separator
			+ "applicationContext.xml";
	ApplicationContext ac = new FileSystemXmlApplicationContext(path);

	TestService ts = (TestService) ac.getBean("testService");
	ts.interfaceOne();
}

/**
 * 配置文件放置根目录下
 */
@Test
public void fromRootDirectory() {
	String path = "applicationContext.xml";
	ApplicationContext ac = new FileSystemXmlApplicationContext(path);

	TestService ts = (TestService) ac.getBean("testService");
	ts.interfaceOne();
}

/**
 * 对象是在什么时候创建的
 */
@Test
public void fromMakeObject() {
	String path = "applicationContext.xml";
	ApplicationContext ac = new FileSystemXmlApplicationContext(path);
	TestService ts = (TestService) ac.getBean("testService");
	ts.interfaceOne();
}

/**
 * 获取容器创建的个数
 */
@Test
public void fromObjectNum() {
	String path = "applicationContext.xml";
	ApplicationContext ac = new FileSystemXmlApplicationContext(path);
	int count = ac.getBeanDefinitionCount();
	System.out.println("容器创建的个数：" + count);
	String[] names = ac.getBeanDefinitionNames();
	for (String string : names) {
		System.out.println("容器对象是：" + string);
	}
}