SpringMVC - 拦截器Interceptor

MyInterceptor

public class MyInterceptor implements HandlerInterceptor {
    
    

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    
    

        System.out.println(request.getRequestURI());

        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
    
    

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
    
    

    }
}

 
 

配置文件 - dispatcher-servlet.xml

    <!--5. 拦截器（作用时机：已经被中心servlet分配到具体的控制器，但还未进入控制器）-->
    <mvc:interceptors>
        <mvc:interceptor>
            <!--需要被拦截的请求-->
            <mvc:mapping path="/**"/>  
            
            <!--不需被拦截的请求 - 静态资源-->
            <mvc:exclude-mapping path="/static/**"/> 
            <bean class="top.linruchang.interceptor.MyInterceptor"/>
        </mvc:interceptor>
    </mvc:interceptors>