Spring mvc interceptor配置攔截器

原文：http://blog.csdn.net/liyisong2008/article/details/42915715

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xml代碼：

[java]?view plaincopy  
 <?xml??version="1.0"?encoding="UTF-8"?>??
 <beans?xmlns="http://www.springframework.org/schema/beans"??
 ?xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"?xmlns:context="http://www.springframework.org/schema/context"??
 ?xmlns:mvc="http://www.springframework.org/schema/mvc"??
 ?xsi:schemaLocation="http://www.springframework.org/schema/beans????
 ????????http://www.springframework.org/schema/beans/spring-beans.xsd????
 ????????http://www.springframework.org/schema/context????
 ????????http://www.springframework.org/schema/context/spring-context.xsd????
 ????????http://www.springframework.org/schema/mvc????
 ????????http://www.springframework.org/schema/mvc/spring-mvc.xsd"??
 ?default-autowire="byName">??
 ?<!--?auto?register?Processor?-->??
 ?<context:annotation-config?/>??
 ?<bean?class="org.mybatis.spring.mapper.MapperScannerConfigurer">??
 ??<property?name="basePackage"?value="com.anxin.msapweb.db.mybatis.mapper"?/>??
 ?</bean>??
 ??
 ?<bean?id="sqlSessionFactory"?class="org.mybatis.spring.SqlSessionFactoryBean">??
 ??<property?name="dataSource"?ref="db2dataSource"?/>??
 ?</bean>??
 ??
 ?<mvc:interceptors>??
 ??<mvc:interceptor>??
 ???<!--?需攔截的地址?-->??
 ????????????????????????<!--?一級目錄?-->??
 ???<mvc:mapping?path="/*.do"?/>??
 ???<mvc:mapping?path="/*.ajax"?/>??
 ???<mvc:mapping?path="/*.htm"?/>??
 ??
 ????????????????????????<!--?二級目錄?-->??
 ???<mvc:mapping?path="/*/*.do"?/>??
 ???<mvc:mapping?path="/*/*.ajax"?/>??
 ???<mvc:mapping?path="/*/*.htm"?/>??
 ???<!--?需排除攔截的地址?-->??
 ???<mvc:exclude-mapping?path="/login.htm"/>??
 ???<bean?class="com.anxin.msapweb.web.interceptor.SecurityInterceptor"?/>??
 ??</mvc:interceptor>??
 ?</mvc:interceptors>??
 </beans>??
 

Java代碼：

[java]?view plaincopy  
 package?com.anxin.msapweb.web.interceptor;??
 ??
 import?javax.servlet.http.HttpServletRequest;??
 import?javax.servlet.http.HttpServletResponse;??
 import?javax.servlet.http.HttpSession;??
 ??
 import?org.springframework.web.servlet.HandlerInterceptor;??
 import?org.springframework.web.servlet.ModelAndView;??
 ??
 import?com.anxin.msapweb.common.Config;??
 ??
 public?class?SecurityInterceptor?implements?HandlerInterceptor?{??
 ??
 ?private?static?final?String?LOGIN_URL?=?"/login.htm";??
 ??
 ?@Override??
 ?public?boolean?preHandle(HttpServletRequest?req,?HttpServletResponse?res,?Object?handler)?throws?Exception?{??
 ??HttpSession?session?=?req.getSession(true);??
 ??//?從session?里面獲取用戶名的信息??
 ??Object?obj?=?session.getAttribute(Config.Passport.SESSION_NAME_LOGIN_RESULT);??
 ??//?判斷如果沒有取到用戶信息，就跳轉到登陸頁面，提示用戶進行登陸??
 ??if?(obj?==?null?||?"".equals(obj.toString()))?{??
 ???res.sendRedirect(LOGIN_URL);??
 ??}??
 ??return?true;??
 ?}??
 ??
 ?@Override??
 ?public?void?postHandle(HttpServletRequest?req,?HttpServletResponse?res,?Object?arg2,?ModelAndView?arg3)?throws?Exception?{??
 ?}??
 ??
 ?@Override??
 ?public?void?afterCompletion(HttpServletRequest?req,?HttpServletResponse?res,?Object?arg2,?Exception?arg3)?throws?Exception?{??
 ?}??
 ??
 }??
 ??
 ???

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