Shiro无权限，不进行unauthorizedUr无权限l跳转，而是没有权限的错误

（zlt尼玛银行），原创文章，转发请注明出处：http://write.blog.csdn.net/postedit

源码ShiroFilterFactoryBean.java

private void applyUnauthorizedUrlIfNecessary(Filter filter) {  
        String unauthorizedUrl = getUnauthorizedUrl();  
        if (StringUtils.hasText(unauthorizedUrl) && (filter instanceof AuthorizationFilter)) {  
            AuthorizationFilter authzFilter = (AuthorizationFilter) filter;  
            //only apply the unauthorizedUrl if they haven't explicitly configured one already:  
            String existingUnauthorizedUrl = authzFilter.getUnauthorizedUrl();  
            if (existingUnauthorizedUrl == null) {  
                authzFilter.setUnauthorizedUrl(unauthorizedUrl);  
            }  
        }  
    }  

定义的filter必须满足filter instanceof AuthorizationFilter，只有perms，roles，ssl，rest，port才是属于AuthorizationFilter，而anon，authcBasic，auchc，user是AuthenticationFilter，所以unauthorizedUrl设置后页面不跳转
解决方法要么就使用perms，roles，ssl，rest，port，要不请看如下解决办法

<!-- 没有权限时跳转的url -->

<property name="unauthorizedUrl" value="/Manage/Unauth/unauth.do"></property>

解决办法

自定义异常类Reslover 捕捉异常，如果异常为无权限异常就手动就是转发到无权页面。

/**
 * 
* 类名称：MyExceptionResolver.java
* 类描述： 
* @author lsq
* 作者单位： 
* 联系方式：QQ237442461
* @version 1.0
 */
public class MyExceptionResolver implements HandlerExceptionResolver{

	public ModelAndView resolveException(HttpServletRequest request,
			HttpServletResponse response, Object handler, Exception ex) {
		// TODO Auto-generated method stub
		System.out.println("==============异常开始=============");
		//如果是shiro无权操作，因为shiro 在操作auno等一部分不进行转发至无权限url
		if(ex instanceof UnauthorizedException){
			ModelAndView mv = new ModelAndView("manage/unauth/index");
			return mv;
		}
		ex.printStackTrace();
		System.out.println("==============异常结束=============");
		ModelAndView mv = new ModelAndView("error");
		mv.addObject("exception", ex.toString().replaceAll("\n", "<br/>"));
		return mv;
	}

}

Spring-mvc 配置自定义异常

<!-- 自定义异常处理-->
    <bean id="exceptionResolver" class="com.ljy.manage.resolver.MyExceptionResolver"></bean>