我有一个拥有所有业务bean的根上下文(它是根上下文)
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- Root Context: defines shared resources visible to all other web components -->
<context:annotation-config />
<context:component-scan base-package="it.mypack">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
</beans>
和只有控制器bean(它是root的子)的servlet-context
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<!-- Enables the Spring MVC @Controller programming model -->
<mvc:annotation-driven />
<context:annotation-config />
<context:component-scan base-package="it.mypack">
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
</beans>
我想添加一个Configuration类,以便以编程方式创建一些bean。我的问题是:这些bean将成为root-context或servlet-context的一部分?
我的配置:
@Configuration
public class AppConfig {
@Bean
public ArrayList<String> myBean() {
ArrayList<String> std=new ArrayList<String>();
std.add("ciao");
return std;
}
}
我问这个是因为我不想创建重复的bean。如果您读取我的上下文代码,则不允许此问题,根上下文已为所有组件启用了组件扫描,除了控制器和servlet-context已启用仅针对Controller的组件扫描...所以我的问题是bean ArrayList myBean(在我的配置中声明) class)有上下文根或servlet上下文吗?你确定春天不会创建重复的bean吗?拜托,你能解释一下这种行为吗?
答案 0 :(得分:0)
“根上下文已启用除控制器和servlet上下文之外的所有组件的组件扫描,仅为Controller启用组件扫描”
AppConfig具有配置注释,因此将位于根上下文中。因为内部的任何内容都将在根上下文中。