[springframework] - DispatcherServlet and WebApplicationContext

本文介绍了Spring MVC中DispatcherServlet的两种配置方式:通过默认配置文件dispatcherServlet-servlet.xml及自定义配置文件applicationContext.xml。文章详细说明了如何避免因找不到配置文件而引发的异常。

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1. Default context configuration xml, [servlet-name]-servlet.xml

Configure DispatcherServlet in web.xml


	dispatcherServlet
	org.springframework.web.servlet.DispatcherServlet
	1


	dispatcherServlet
	*.htm

It will load a context configuration xml, named as [servlet-name]-servlet.xml. With regard to above example if you don't provide dispatcherServlet-servlet.xml it will create exceptions as below:

SEVERE: Servlet /springmvc threw load() exception
java.io.FileNotFoundException: Could not open ServletContext resource [/WEB-INF/dispatcherServlet-servlet.xml]
	at org.springframework.web.context.support.ServletContextResource.getInputStream(ServletContextResource.java:141)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:329)
	at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:216)
	at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:187)
	at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
	at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
	at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)
	at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:540)


2. Change the location or name of context configuration xml file

Now we are going to use applicationContext.xml


	dispatcherServlet
	org.springframework.web.servlet.DispatcherServlet
	
            contextConfigLocation
            /WEB-INF/applicationContext.xml
  	
	1


	dispatcherServlet
	*.htm

Or we also can put our applicationContext.xml just under classpath root.


	dispatcherServlet
	org.springframework.web.servlet.DispatcherServlet
	
            contextConfigLocation
            classpath:applicationContext.xml
  	
	1


	dispatcherServlet
	*.htm

 


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