[转]Spring mvc interceptor配置拦截器，没有登录跳到登录页

1. <?xml  version="1.0" encoding="UTF-8"?>
2. <beans xmlns="http://www.springframework.org/schema/beans"
3. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
4. xmlns:mvc="http://www.springframework.org/schema/mvc"
5. xsi:schemaLocation="http://www.springframework.org/schema/beans
6. http://www.springframework.org/schema/beans/spring-beans.xsd
7. http://www.springframework.org/schema/context
8. http://www.springframework.org/schema/context/spring-context.xsd
9. http://www.springframework.org/schema/mvc
10. http://www.springframework.org/schema/mvc/spring-mvc.xsd"
11. default-autowire="byName">
12. <!-- auto register Processor -->
13. <context:annotation-config />
14. <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
15. <property name="basePackage" value="com.anxin.msapweb.db.mybatis.mapper" />
16. </bean>
17. <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
18. <property name="dataSource" ref="db2dataSource" />
19. </bean>
20. <mvc:interceptors>
21. <mvc:interceptor>
22. <!-- 需拦截的地址 -->
23. <!-- 一级目录 -->
24. <mvc:mapping path="/*.do" />
25. <mvc:mapping path="/*.ajax" />
26. <mvc:mapping path="/*.htm" />
27. <!-- 二级目录 -->
28. <mvc:mapping path="/*/*.do" />
29. <mvc:mapping path="/*/*.ajax" />
30. <mvc:mapping path="/*/*.htm" />
31. <!-- 需排除拦截的地址 -->
32. <mvc:exclude-mapping path="/login.htm"/>
33. <bean class="com.anxin.msapweb.web.interceptor.SecurityInterceptor" />
34. </mvc:interceptor>
35. </mvc:interceptors>
36. </beans>

注：不支持<mvc:mapping path="*.do" />

1. package com.anxin.msapweb.web.interceptor;
2. import javax.servlet.http.HttpServletRequest;
3. import javax.servlet.http.HttpServletResponse;
4. import javax.servlet.http.HttpSession;
5. import org.springframework.web.servlet.HandlerInterceptor;
6. import org.springframework.web.servlet.ModelAndView;
7. import com.anxin.msapweb.common.Config;
8. public class SecurityInterceptor implements HandlerInterceptor {
9. private static final String LOGIN_URL = "/login.htm";
10. @Override
11. public boolean preHandle(HttpServletRequest req, HttpServletResponse res, Object handler) throws Exception {
12. HttpSession session = req.getSession(true);
13. // 从session 里面获取用户名的信息
14. Object obj = session.getAttribute(Config.Passport.SESSION_NAME_LOGIN_RESULT);
15. // 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
16. if (obj == null || "".equals(obj.toString())) {
17. res.sendRedirect(LOGIN_URL);
18. }
19. return true;
20. }
21. @Override
22. public void postHandle(HttpServletRequest req, HttpServletResponse res, Object arg2, ModelAndView arg3) throws Exception {
23. }
24. @Override
25. public void afterCompletion(HttpServletRequest req, HttpServletResponse res, Object arg2, Exception arg3) throws Exception {
26. }
27. }

（原文地址：http://qiaolevip.iteye.com/blog/1827676）