SpringMvc配置拦截器

1. 创建一个类  实现接口 HandlerInterceptor

2.重写接口中的方法

public class adminInterceptoor implements HandlerInterceptor{

    @Override
    public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
            throws Exception {
        // TODO Auto-generated method stub
        
    }

    @Override
    public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
            throws Exception {
        // TODO Auto-generated method stub
        
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object arg2) throws Exception {
        Object admin = request.getSession().getAttribute("admin");
        if(admin!=null) {
            return true;
        }else {
            response.sendRedirect("../login.jsp");
            return false;
        }
    }

 

3. 把创建的类配置到springMVC配置文件中

 

 

1. 拦截器(拦截都是控制层的地址。 filter: )

1. 创建一个类 实现接口 HandlerInterceptor

2. 重写接口的中方法

3. 把创建的类配置到springmvc文件中。