spring中有哪几种加载ApplicationContext.xml的方式呢?
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转发:
http://www.java265.com/JavaFramework/Spring/202205/3284.html
下文笔者讲述Spring中加载ApplicationContext.xml的方法分享,如下所示:
xml是spring最早期的配置方式之一,
目前市面上很多SpringMVC任然采用这种配置方式,那么Spring如何加载xml呢?
下文笔者将一一道来,如下所示
spring 中加载xml配置文件的方式 有4种,分别为: XmlBeanFactory, ClassPathXmlApplicationContext, FileSystemXmlApplicationContext, XmlWebApplicationContext
一:XmlBeanFactory 引用资源
Resource resource = new ClassPathResource("applicationContext.xml"); BeanFactory factory = new XmlBeanFactory(resource);
二:ClassPathXmlApplicationContext 编译路径
ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml"); ApplicationContext ac = new ClassPathXmlApplicationContext(new String[]{"applicationContext.xml","dao.xml"}); ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:/*.xml"); ApplicationContext factory=new ClassPathXmlApplicationContext("classpath:appcontext.xml"); ApplicationContext factory=new ClassPathXmlApplicationContext("appcontext.xml"); // src目录下的 ApplicationContext factory=new ClassPathXmlApplicationContext("conf/appcontext.xml"); // src/conf 目录下的 ApplicationContext factory=new ClassPathXmlApplicationContext("file:G:/Test/src/appcontext.xml"); RegisterDAO registerDAO = (RegisterDAO)ac.getBean("RegisterDAO");
三:用文件系统的路径
ApplicationContext factory=new FileSystemXmlApplicationContext("src/appcontext.xml"); //使用classpath:前缀,作为标志FileSystemXmlApplicationContext 也能够读入classpath下的相对路径 ApplicationContext factory=new FileSystemXmlApplicationContext("classpath:appcontext.xml"); ApplicationContext factory=new FileSystemXmlApplicationContext("file:D:/Test/src/appcontext.xml"); ApplicationContext factory=new FileSystemXmlApplicationContext("D:/Test/src/appcontext.xml");
四: XmlWebApplicationContext 是专为Web工程定制的
ServletContext servletContext = request.getSession().getServletContext(); ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext ); classpath:前缀是不需要的 默认就是指项目的classpath路径下面 如果要使用绝对路径,需要加上file:前缀表示这是绝对路径;
标签:xml,ApplicationContext,spring,appcontext,factory,ClassPathXmlApplicationContext, 来源: https://www.cnblogs.com/java265/p/16223518.html