1. //读取一个文件
ApplicationContext context= new ClassPathXmlApplicationContext("applicationContext.xml"); UserDAO userDAO= (UserDAO )context.getBean("userDAO");
2.//读取多个文件
ClassPathXmlApplicationContext resource= new ClassPathXmlApplicationContext(new String[] {"applicationContextconfig.xml","applicationContext.xml","applicationContext-data.xml"}); BeanFactory factory= resource; UserDAO userDAO= (UserDAO ) factory.getBean("userDAO ");
<2>、利用ClassPathResource,可以从classpath中读取XML文件
Resource resource= new ClassPathResource("applicationContext.xml"); BeanFactory bf=new XmlBeanFactory(resource ); UserDAO userDAO= (UserDAO )bf.getBean("userDAO ");
<3>、利用XmlWebApplicationContext读取
XmlWebApplicationContext xmlctx = new XmlWebApplicationContext(); xmlctx.setConfigLocations(new String[] {"/WEB-INF/ applicationContext.xml"); xmlctx.setServletContext(pageContext.getServletContext()); xmlctx.refresh(); UserDAO userDAO= (UserDAO ) xmlctx.getBean("userDAO ");
<4>、利用FileSystemResource读取
Resource resource= new FileSystemResource("E:/Java/spring/WebRoot/WEB-INF/classes/ applicationContext.xml"); BeanFactory factory= new XmlBeanFactory(resource ); UserDAO userDAO= (UserDAO )factory.getBean("userDAO ");
注意:利用FileSystemResource,则配置文件必须放在project直接目录下,或者写明绝对路径,否则就会抛出找不到文件的异常
<5>、利用FileSystemXmlApplicationContext读取,可以指定XML定义文件的相对路径或者绝对路径来读取定义文件。
String[] path={"WebRoot/WEB-INF/applicationContext.xml","WebRoot/WEB-INF/applicationContext_config.xml"}; ApplicationContext context = new FileSystemXmlApplicationContext(path); String path="WebRoot/WEB-INF/applicationContext*.xml"; ApplicationContext context = new FileSystemXmlApplicationContext(path);ApplicationContext ctx = new FileSystemXmlApplicationContext("classpath:地址");