Spring配置文件命名空间

 

 xmlns

xml namespace的缩写,也就是XML命名空间,xmlns 属性可以在文档中定义一个或多个可供选择的命名空间

<?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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/aop
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context2.5.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

	<aop:aspectj-autoproxy/>

	<!--使用注解的方式AOP注入-->
	
	<bean class="org.springframework.aop.aspectj.annotation.AnnotationAwareAspectJAutoProxyCreator"/>
	<bean id="person" class="hb.dao.imp.PersonImp"/>
	<bean id="aop" class="hb.aop.Aop"/>
	
</beans>

 命名空间的内容可以从对应的jar包中找到,这里以AOP为例子说明,如图

打开spring.schemas文件,可以查看到对应命名空间内容,然后输入到配置文件中(这里要保证版本对应)

http\://www.springframework.org/schema/aop/spring-aop-2.0.xsd=org/springframework/aop/config/spring-aop-2.0.xsd

http\://www.springframework.org/schema/aop/spring-aop-2.5.xsd=org/springframework/aop/config/spring-aop-2.5.xsd

http\://www.springframework.org/schema/aop/spring-aop.xsd=org/springframework/aop/config/spring-aop-2.5.xsd

在配置文件中的xsi:schemaLocation标签的内容有顺序,例如

http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd

必须保证http://www.springframework.org/schema/aop

在 http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
前面,否则不会正确的解析

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转载自hbiao68.iteye.com/blog/1609994