Spring mvc interceptor配置拦截器

本文主要是介绍Spring mvc interceptor配置拦截器，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

xml代码

<?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>  <!-- 需拦截的地址 -->  <!-- 一级目录 -->  <mvc:mapping path="/*.do" />  <mvc:mapping path="/*.ajax" />  <mvc:mapping path="/*.htm" />  <!-- 二级目录 -->  <mvc:mapping path="/*/*.do" />  <mvc:mapping path="/*/*.ajax" />  <mvc:mapping path="/*/*.htm" />  <!-- 需排除拦截的地址 -->  <mvc:exclude-mapping path="/login.htm"/>  <bean class="com.anxin.msapweb.web.interceptor.SecurityInterceptor" />  </mvc:interceptor>  </mvc:interceptors>  
</beans>

Java代码

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);  // 从session 里面获取用户名的信息  Object obj = session.getAttribute(Config.Passport.SESSION_NAME_LOGIN_RESULT);  // 判断如果没有取到用户信息，就跳转到登陆页面，提示用户进行登陆  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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