在有些时候,你可能需要以你的所有项目进行全局的过滤。
因为你的项目可以设计到互相的依赖和调用 。
修改在tomcat下的conf下的web.xml文件。和在原来的web-inif下的修改一样,添加filter.
然后将你的filter打包成jar,放在tomcat下的lib目录下,如果你知道tomcat的lib目录的作用的话。
<filter> <filter-name>appFilter</filter-name> <filter-class>com.common.AppFilter</filter-class> </filter> <filter-mapping> <filter-name>appFilter</filter-name> <url-pattern>/*</url-pattern> <dispatcher>REQUEST</dispatcher> <dispatcher>FORWARD</dispatcher> <dispatcher>INCLUDE</dispatcher> </filter-mapping>
重启tomcat,一切搞定.
public class PathFilter implements Filter { public void destroy() {} public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletRequest req = (HttpServletRequest)request; HttpServletResponse resp = (HttpServletResponse)response; String uri = req.getRequestURI(); if(uri.endsWith("home.htm")){ resp.sendRedirect("/hdsst/home/index.jsp"); } chain.doFilter(req,resp); } public void init(FilterConfig filterConfig) throws ServletException {} }