在 web 中配置过滤器
<!-- 过滤器 --> <filter> <filter-name>a</filter-name> <filter-class>com.filter.fileter</filter-class> </filter> <filter-mapping> <filter-name>a</filter-name> <url-pattern>/a.*</url-pattern> </filter-mapping>
写一个过滤器处理类
public class fileter implements Filter {
public void destroy() {
// TODO Auto-generated method stub
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
// 此处为即将要进行处理的代码
request.getRequestDispatcher("error.jsp").forward(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
// TODO Auto-generated method stub
}