項目需要使用載入多個xml,方便起見,轉載一篇文章作爲記錄
轉自:http://javapub.iteye.com/blog/751772
Spring中加載xml配置文件的方式,我總結的有6種, xml是最常見的spring 應用系統配置源。Spring中的幾種容器都支持使用xml裝配bean,包括:
XmlBeanFactory,ClassPathXmlApplicationContext,FileSystemXmlApplicationContext,XmlWebApplicationContext
Resource resource = new ClassPathResource("appcontext.xml");
BeanFactory factory = new XmlBeanFactory(resource);
二、ClassPathXmlApplicationContext 編譯路徑
ApplicationContext factory=new ClassPathXmlApplicationContext("classpath:appcontext.xml");
// src目錄下的
ApplicationContext factory=new ClassPathXmlApplicationContext("appcontext.xml");
ApplicationContext factory=new ClassPathXmlApplicationContext(new String[] {"bean1.xml","bean2.xml"});
// src/conf 目錄下的
ApplicationContext factory=new ClassPathXmlApplicationContext("conf/appcontext.xml");
ApplicationContext factory=new ClassPathXmlApplicationContext("file:G:/Test/src/appcontext.xml");
三、用文件系統的路徑
ApplicationContext factory=new FileSystemXmlApplicationContext("src/appcontext.xml");
//使用了 classpath: 前綴,作爲標誌, 這樣,FileSystemXmlApplicationContext 也能夠讀入classpath下的相對路徑
ApplicationContext factory=new FileSystemXmlApplicationContext("classpath:appcontext.xml");
ApplicationContext factory=new FileSystemXmlApplicationContext("file:G:/Test/src/appcontext.xml");
ApplicationContext factory=new FileSystemXmlApplicationContext("G:/Test/src/appcontext.xml");
四、XmlWebApplicationContext是專爲Web工程定製的
ServletContext servletContext = request.getSession().getServletContext();
ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext );
五、使用BeanFactory
BeanDefinitionRegistry reg = new DefaultListableBeanFactory();
XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(reg);
reader.loadBeanDefinitions(new ClassPathResource("bean1.xml"));
reader.loadBeanDefinitions(new ClassPathResource("bean2.xml"));
BeanFactory bf=(BeanFactory)reg;
六、Web 應用啓動時加載多個配置文件
通過ContextLoaderListener 也可加載多個配置文件,在web.xml文件中利用
<context-pararn>元素來指定多個配置文件位置,其配置如下:
<context-param>
<!-- Context Configuration locations for Spring XML files -->
<param-name>contextConfigLocation</param-name>
<param-value>
./WEB-INF/**/Appserver-resources.xml,
classpath:config/aer/aerContext.xml,
classpath:org/codehaus/xfire/spring/xfire.xml,
./WEB-INF/**/*.spring.xml
</param-value>
</context-param>