shiro配置文件如下
```
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
<!--start：shiro相关配置-->
<!-- Shiro 的Web过滤器 -->
<bean id="shiroFilter" class="org.apache.shiro.spring.web.ShiroFilterFactoryBean">
<property name="securityManager" ref="securityManager" />
<!-- loginUrl认证提交地址，如果没有认证将会请求此地址进行认证，请求此地址将由formAuthenticationFilter进行表单认证 -->
<property name="loginUrl" value="/login.action" />
<!--认证成功统一跳转到first.action,建议不配置-->
<property name="successUrl" value="/index.action"/>
<!-- 通过unauthorizedUrl指定没有权限操作时跳转页面-->
<property name="unauthorizedUrl" value="/refuse.jsp" />
<!-- 过虑器链定义，从上向下顺序执行，一般将/**放在最下边 -->
<property name="filterChainDefinitions">
<value>
<!-- 退出拦截，请求logout.action执行退出操作 -->
/logout.action = logout
<!-- 无权访问页面 -->
/refuse.jsp = anon
<!--静态资源可以匿名方位-->
/css/** = anon
/font-awesome/** = anon
/images/** = anon
/img/** = anon
/js/** = anon
/My97DatePicker/** = anon
<!-- user表示身份认证通过或通过记住我认证通过的可以访问 -->
/** = authc
</value>
</property>
</bean>
<!-- 安全管理器 -->
<bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
<property name="realm" ref="customRealm" />
</bean>
<!-- 自定义 realm -->
<bean id="customRealm" class="com.hebeu.keyan.shiro.CustomRealm">
</bean>
<!--shiro配置结束-->
</beans>
```
web.xml配置如下：
```
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
<display-name>keyan</display-name>
<!--springMVC前端控制器-->
<servlet>
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- contextConfigLocation配置springmvc加载的配置文件（配置处理器映射器、适配器等等）
如果不配置contextConfigLocation，默认加载的是/WEB-INF/servlet名称-serlvet.xml（springmvc-servlet.xml） -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
<!-- 加载spring容器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml,classpath:applicationContext-shiro.xml</param-value>
</context-param>
<!--post乱码过虑器-->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- shiro过虑器，DelegatingFilterProxy通过代理模式将spring容器中的bean和filter关联起来 -->
<filter>
<filter-name>shiroFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
<!-- 设置true由servlet容器控制filter的生命周期 -->
<init-param>
<param-name>targetFilterLifecycle</param-name>
<param-value>true</param-value>
</init-param>
<!-- 设置spring容器filter的bean id，如果不设置则找与filter-name一致的bean-->
<init-param>
<param-name>targetBeanName</param-name>
<param-value>shiroFilter</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>shiroFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--欢迎页设置-->
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
```
loginController如下：
```
// 用户登陆提交
@RequestMapping("login.action")
public String loginsubmit(Model model, HttpServletRequest request)
throws Exception {
// shiro在认证过程中出现错误后将异常类路径通过request返回
String exceptionClassName = (String) request
.getAttribute("shiroLoginFailure");
if(exceptionClassName!=null){
if (UnknownAccountException.class.getName().equals(exceptionClassName)) {
throw new CustomException("账号不存在");
} else if (IncorrectCredentialsException.class.getName().equals(
exceptionClassName)) {
throw new CustomException("用户名/密码错误");
} else if("randomCodeError".equals(exceptionClassName)){
throw new CustomException("验证码错误");
} else{
throw new Exception();//最终在异常处理器生成未知错误
}
}
model.addAttribute("loginResult","认证失败");
return "login";
}
``
调试了很久始终不能调用自定义realm，一直是认证失败，跪求大神帮助，如能解决不胜感激