Spring MVC Definition Interceptor

Interceptors:

 PackageSy. Interceptor;Importjavax.servlet.http.HttpServletRequest;ImportJavax.servlet.http.HttpServletResponse;ImportOrg.springframework.web.servlet.HandlerInterceptor;ImportOrg.springframework.web.servlet.ModelAndView; Public classMyinterceptorImplementsHandlerinterceptor { Public BooleanPrehandle (HttpServletRequest request, HttpServletResponse response, Object object)throwsException {System.out.println ("Prehandle"); return true; }     Public voidPosthandle (HttpServletRequest request, HttpServletResponse response, Object object, Modelandview Modelandview)throwsException {System.out.println ("Posthandle"); }     Public voidAftercompletion (HttpServletRequest request, HttpServletResponse response, Object object, Exception Exception)throwsException {System.out.println ("Aftercompletion"); }}

To configure the interceptor in the Spring MVC configuration file:

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "Http://www.springframework.org/schema/beans"Xmlns:mvc= "Http://www.springframework.org/schema/mvc"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xmlns:p= "http://www.springframework.org/schema/p"Xmlns:context= "Http://www.springframework.org/schema/context"xsi:schemalocation= "Http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/ Spring-beans-3.0.xsd Http://www.springframework.org/schema/context Http://www.springframework.org/schema/context /spring-context-3.0.xsd Http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/ Spring-mvc-3.0.xsd ">    <!--automatically scans all classes under the controller package to make it think that spring MVC's controllers -    <Context:component-scanBase-package= "Sy.controller" />

　　<!--configuring Interceptors--

    <mvc:interceptors>        <Mvc:interceptor>            <!--The URL path is matched, and if not configured or/**, all controllers will be blocked -            <mvc:mappingPath="/**" />            <Beanclass= "sy." Interceptor.myinterceptor "></Bean>        </Mvc:interceptor>    </mvc:interceptors>    <!--JSON mapping solves Chinese garbled problem -    <BeanID= "Mappingjacksonhttpmessageconverter"class= "Org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">        < Propertyname= "Supportedmediatypes">            <List>                <value>Text/html;charset=utf-8</value>            </List>        </ Property>    </Bean>    <!--start the Spring MVC Annotation feature to complete the mapping of requests and annotations Pojo -    <Beanclass= "Org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">        < Propertyname= "Messageconverters">            <List>                <refBean= "Mappingjacksonhttpmessageconverter" /><!--JSON Converter -            </List>        </ Property>    </Bean>    <!--resolution of the Model view name, that is, adding a prefix to the Model view name -    <Beanclass= "Org.springframework.web.servlet.view.InternalResourceViewResolver"P:prefix= "/web-inf/pages/"P:suffix= ". jsp" />    <BeanID= "Multipartresolver"class= "Org.springframework.web.multipart.commons.CommonsMultipartResolver">        < Propertyname= "Defaultencoding">            <value>UTF-8</value>        </ Property>        < Propertyname= "Maxuploadsize">            <value>32505856</value><!--upload file Size limited to 31m,31*1024*1024 -        </ Property>        < Propertyname= "Maxinmemorysize">            <value>4096</value>        </ Property>    </Bean></Beans>

Spring MVC Definition Interceptor