A small detail to note when using spring and SPRINGMVC to manage beans

have been doing the graduation design recently ... Shiro and Springmvc were used. Friends who have used Shiro know that Shiro need to write realm himself and then inject realm into SecurityManager. and SecurityManager is the class that comes with Shiro. I can not modify the source code, add annotations, so the configuration of this realm bean is the use of XML configuration method. And because the whole project is used to SPRINGMVC, the class I write myself is basically configured with annotations. And then there's the problem ... My question is basically the same as configuring and http://www.oschina.net/question/238156_142131 this article.

In a nutshell, I configured a realm bean in the shiro.xml and then injected the annotation configuration Xxxdao into the Realm class.

Shiro.xml is loaded via spring's contextloaderlistener.

　　When I first started in the Shiro.xml,

<bean id= "Mysqlrealm" class= "Jiang.app.realm.MySQLRealm"/>

And then in this realm,

public class Mysqlrealm extends Authorizingrealm {private static Logger Logger = Logger.getlogger (authorizingrealm.class );    @ResourceRoleDao Roledao, @ResourceUserDao Userdao, ...}

The result is that the xxxdao that I get into realm is null ...

Then I searched the internet for the next ... But the feeling is not very reliable ... And then went to the csdn to ask the great gods.

http://bbs.csdn.net/topics/391014289

Get the revelation of 2L and then go online search the next information ... The discovery is indeed true.

The information is here:

Http://www.dewen.io/q/16682/spring%20mvc%E7%9A%84%E7%88%B6%E5%AD%90%E4%B8%8A%E4%B8%8B%E6%96%87 ( Webapplicationcontext)%e7%9a%84%e4%bd%9c%e7%94%a8%e8%8c%83%e5%9b%b4%ef%bc%8c%e5%8c%ba%e5%88%ab%e3%80%81%e5%bd% b1%e5%93%8d%e9%9d%a2%e6%8f%90%e7%8e%b0%e5%9c%a8%e5%93%aa%e9%87%8c%ef%bc%9f

　　My Xxxdao is configured in the SPRINGMVC configuration (mvc-dispatcher-servlet.xml). The SPRINGMVC is a child context (configured through a servlet, specifying the configuration file location). Shiro is configured in the parent context (loaded by Contextloaderlistener). So I can't read the bean configured in Springmvc ....

When you know the problem, the solution is detailed. Configuring the Xxxdao in the parent environment will be OK .

Like what:

Web. xml

<context-param><param-name>contextconfiglocation</param-name><param-value>classpath: Spring.xmlclasspath:spring-hibernate.xml,classpath:shiro.xml</param-value></context-param>

Shiro.xml is configured as-is.

Configuration in Spring.xml

<context:component-scan base-package= "Jiang"/>

Such annotations read the Bean is in the parent environment (I originally Component-scan is configured in the Mvc-dispatcher-servlet.xml sub-environment) ...

A small detail to note when using spring and SPRINGMVC to manage beans