spring加载bean(ClassPathXmlApplicationContext和FileSystemXmlApplicationContext)

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<span style="white-space:pre"></span>ApplicationContext ac = null;User user = null;//ClassPathXmlApplicationContext用 classpath路径,有两种方式ac = new ClassPathXmlApplicationContext("applicationContext.xml");user = (User)ac.getBean("user");System.out.println("不带classpath前缀：" + user.getUserName());ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");user = (User)ac.getBean("user");System.out.println("带classpath前缀：" + user.getUserName());//ClassPathXmlApplicationContext用file路径,当然也可以使用相对路径ac = new ClassPathXmlApplicationContext("file:E:/workspace_test/spring_web/src/applicationContext.xml");user = (User)ac.getBean("user");System.out.println("ClassPathXmlApplicationContext绝对路径:" + user.getUserName());//相对路径ac = new ClassPathXmlApplicationContext("file:src/applicationContext.xml");user = (User)ac.getBean("user");System.out.println("ClassPathXmlApplicationContext相对路径:" + user.getUserName());//FileSystemXmlApplicationContext,使用绝对路径,当然也可以使用相对路径ac = new FileSystemXmlApplicationContext("E:/workspace_test/spring_web/src/applicationContext.xml");user = (User)ac.getBean("user");System.out.println("不带file前缀:" + user.getUserName());ac = new FileSystemXmlApplicationContext("file:E:/workspace_test/spring_web/src/applicationContext.xml");user = (User)ac.getBean("user");System.out.println("带file前缀" + user.getUserName());//FileSystemXmlApplicationContext,使用classpath路径ac = new FileSystemXmlApplicationContext("classpath:applicationContext.xml");user = (User)ac.getBean("user");System.out.println("FileSystemXmlApplicationContext使用classpath:" + user.getUserName());

由上面代码看出，可以看出ClassPathXmlApplicationContext和FileSystemXmlApplicationContext都能通过相对路径，绝对路径或者类路劲加载bean。

当有两个配置文件时，可以new ClassPathXmlApplication(new String[] {“配置1”,"配置2"})

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