SSM 过滤器的配置 Filter

<!-- 过滤器拦截指定后缀-->  <!-- //localhost:8080/sanzu/test/****都会被拦截 --><filter> <filter-name>SessionFilter</filter-name> <filter-class>com.jk.login.filter.MyFilter</filter-class> <init-param>             <param-name>charset</param-name>               <param-value>UTF-8</param-value>         </init-param>         <init-param>             <param-name>contentType</param-name>             <param-value>text/html;charset=UTF-8</param-value>         </init-param>   </filter><filter-mapping> <filter-name>SessionFilter</filter-name> <!-- 要拦截的哪一级目录 --> <url-pattern>/test/*</url-pattern></filter-mapping><!-- 配置session超时时间，单位分钟 --><session-config><session-timeout>30</session-timeout></session-config>

web-info/web.xml配置，并配置相应的interceptor类

相应的过滤器类

package com.jk.login.filter;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.log4j.Logger;public class MyFilter implements Filter{private static final Logger logger = Logger.getLogger(MyFilter.class);public void destroy() {System.out.println("销毁过滤器方法");logger.info("销毁过滤器方法");}public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)throws IOException, ServletException {HttpServletResponse response = (HttpServletResponse) res;HttpServletRequest  request=(HttpServletRequest) req;        String servletPath = request.getServletPath();        logger.info("请求路径过滤信息路径为：" + servletPath);                //访问login.jsp时，才放过，并且login.jsp的后续操作，继续执行，不拦截        if (servletPath.equals("/login.jsp")  ) {            chain.doFilter(req, res);            return;}else {String contextPath=request.getContextPath();         response.setCharacterEncoding("utf-8");    request.setCharacterEncoding("utf-8");response.setContentType("text/html");PrintWriter pw = response.getWriter();//否则拦截，跳转指定的页面pw.print("<script>window.top.location.href='"+contextPath + "/aa.jsp'"+";</script>");}}public void init(FilterConfig arg0) throws ServletException {System.out.println("初始化过滤器的方法");logger.info("初始化过滤器的方法");}}