The head of the spring configuration file xmls

<Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"
XMLNS:AOP= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"Xmlns:tx= "Http://www.springframework.org/schema/tx"
Xmlns:context= "Http://www.springframework.org/schema/context"Xmlns:mvc= "Http://www.springframework.org/schema/mvc"
Xmlns:task= "Http://www.springframework.org/schema/task"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-        3.1.xsd Http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd        HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP http://www.springframework.org/schema/aop/spring-aop-3.1.xsd Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/ Spring-context-3.1.xsd Http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/s Pring-mvc-3.1.xsd Http://www.springframework.org/schema/task Http://www.springframework.org/schema/task/spri Ng-task-3.1.xsd ">

One:

xmlns= "Http://www.springframework.org/schema/beans" xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"

This is a necessary part of each configuration file, which is the root of spring.

Declares the default namespace for the XML file, which represents the default namespace for all labels that do not use other namespaces.

Declare an XML SCHEMA instance and declare it to use the SchemaLocation property.

Two:

xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"

This is the spring configuration file that requires the use of an AOP tag, declaring a namespace prefixed with AOP, and the URL used to indicate the namespace is not used by the parser to find information. Its only function is to give the namespace a unique name. When a namespace is defined in the start tag of an element, all child elements with the same prefix are associated with the same namespace. Then other things like context (for component tags), MVC (for MVC tags), TX (for transaction labels) all mean the same.

force the use of Cglib agents <  proxy-target-class= "true"/>

Three:

Xsi:schemalaction part: http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/ Spring-beans-3.1.xsd

is to specify the XSD specification file for the namespace configured above, so that you will be given the following specific configuration of the XSD specification files according to the corresponding hints, such as how each label is written, and some of the properties can be smart hints, in order to prevent errors in the configuration is not easy to troubleshoot, The configuration is also validated against the XSD specification when the service is started. However, it is necessary to configure the XSD specification file for the MVC, AOP, TX, and so on that you configure in the xmlns above.

The head of the spring configuration file xmls