spring的 配置文件在启动时，加载的是web-info目录下的applicationContext.xml,
运行时使用的是web-info/classes目录下的applicationContext.xml。
配置web.xml使这2个路径一致：
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/classes/applicationContext.xml</param-value>
</context-param> 多个配置文件的加载
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:conf/spring/applicationContext_core*.xml,
classpath*:conf/spring/applicationContext_dict*.xml,
classpath*:conf/spring/applicationContext_hibernate.xml,
classpath*:conf/spring/applicationContext_staff*.xml,
classpath*:conf/spring/applicationContext_security.xml
classpath*:conf/spring/applicationContext_modules*.xml
classpath*:conf/spring/applicationContext_cti*.xml
classpath*:conf/spring/applicationContext_apm*.xml
</param-value>
</context-param> contextConfigLocation 参数定义了要装入的 Spring 配置文件。
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