基于Spring框架的Shiro配置（转发：http://kdboy.iteye.com/blog/1103794）

一、在web.xml中添加shiro过滤器 

<!-- Shiro filter-->
<filter>
    <filter-name>shiroFilter</filter-name>
    <filter-class>
        org.springframework.web.filter.DelegatingFilterProxy
    </filter-class>
</filter>
<filter-mapping>
    <filter-name>shiroFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

二、在Spring的applicationContext.xml中添加shiro配置 
1、添加shiroFilter定义 

<!-- Shiro Filter -->
<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
    <property name="securityManager" ref="securityManager" />
    <property name="loginUrl" value="/login" />
    <property name="successUrl" value="/user/list" />
    <property name="unauthorizedUrl" value="/login" />
    <property name="filterChainDefinitions">
        <value>
            /login = anon
            /user/** = authc
            /role/edit/* = perms[role:edit]
            /role/save = perms[role:edit]
            /role/list = perms[role:view]
            /** = authc
        </value>
    </property>
</bean>

2、添加securityManager定义 

<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
    <property name="realm" ref="myRealm" />
</bean>

3、添加realm定义 

<bean id=" myRealm" class="com...MyRealm" />

三、实现MyRealm：继承AuthorizingRealm，并重写认证授权方法 

public class MyRealm extends AuthorizingRealm{

    private AccountManager accountManager;
    public void setAccountManager(AccountManager accountManager) {
        this.accountManager = accountManager;
    }

    /**
     * 授权信息
     */
    protected AuthorizationInfo doGetAuthorizationInfo(
                PrincipalCollection principals) {
        String username=(String)principals.fromRealm(getName()).iterator().next();
        if( username != null ){
            User user = accountManager.get( username );
            if( user != null && user.getRoles() != null ){
                SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
                for( SecurityRole each: user.getRoles() ){
                        info.addRole(each.getName());
                        info.addStringPermissions(each.getPermissionsAsString());
                }
                return info;
            }
        }
        return null;
    }

    /**
     * 认证信息
     */
    protected AuthenticationInfo doGetAuthenticationInfo(
                AuthenticationToken authcToken ) throws AuthenticationException {
        UsernamePasswordToken token = (UsernamePasswordToken) authcToken;
        String userName = token.getUsername();
        if( userName != null && !"".equals(userName) ){
            User user = accountManager.login(token.getUsername(),
                            String.valueOf(token.getPassword()));

            if( user != null )
                return new SimpleAuthenticationInfo(
                            user.getLoginName(),user.getPassword(), getName());
        }
        return null;
    }

}