SpringMVC 拦截器

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public class LoginIntercetor implements HandlerInterceptor{

    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
        System.out.println("进入拦截器");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
        System.out.println("postHandler");
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
        System.out.println("处理完成");
    }
}

　　

    <!--配置拦截器-->
    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <bean class="com.core.LoginIntercetor"/>
            <!--那些类不进入拦截器-->
            <!--<mvc:exclude-mapping path=""></mvc:exclude-mapping>-->
        </mvc:interceptor>
        <mvc:interceptor>
            <mvc:mapping path="/**"/>
            <bean class="com.core.LoginIntercetor"/>
        </mvc:interceptor>
    </mvc:interceptors>

　　

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