Spring MVC+mybatis实现注册登录功能

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance  http://www.springmodules.org/schema/cache/springmodules-cache.xsd  http://www.springmodules.org/schema/cache/springmodules-ehcache.xsd"  xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee  http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd   "><filter> <filter-name>encoding</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param></filter> <filter-mapping> <filter-name>encoding</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <!-- 前端控制器 --><servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 在tomcat启动时初始化servlet的优先级，这个数字只能整数，正整数才会初始化servlet --> <load-on-startup>1</load-on-startup> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/config/spring.xml</param-value> </init-param></servlet><servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>*.action</url-pattern></servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list></web-app>