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Spring框架学习之配置文件的整合

当遇到项目需要细化xml配置的分类时,可以通过下面方式完成对配置文件的装配:

1、通过枚举

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>,        <param-value>classpath:applicationContext2.xml</param-value>,
            <param-value>classpath:applicationContext3.xml</param-value>
</context-param>

或通配符

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext*.xml</param-value>,     
</context-param>

2、通过import文件引入实现主分支文件

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
</context-param>
然后在applicationContext.xml路径下通过添加对应的Import引入分支文件
<import resource= "classpath:applicationContext2.xml">
<import resource= "classpath:applicationContext3.xml">

在spring框架中引入配置文件的做法也有不同:

普通java工程中:ApplicationContext ctx = new ClassPathXmlApplicationContext("Beans.xml");

在WEB工程中也可以按照上面的方式引入,但更常见的引入方式为:

ApplicationContext ac1 =WebApplicationContextUtils.getRequiredWebApplicationContext(ServletContext sc)`

原文  https://segmentfault.com/a/1190000022344131
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