从Java EE5.0开始,<servlet-mapping>标签就可以配置多个<url-pattern>。例如可以同时将urlServlet配置一下多个映射方式:
<servlet> <servlet-name>servletName</servlet-name> <servlet-class>com.copy.project.UrlServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>servletName</servlet-name> <url-pattern>/servlet/urlServlet</url-pattern> <url-pattern>/servlet/urlServlet.asp</url-pattern> <url-pattern>/servlet/urlServlet.jsp</url-pattern> <url-pattern>/servlet/urlServlet.php</url-pattern> </servlet-mapping>
这时,不加后缀和加.asp/.jsp/.php访问,都会正常显示。
项目中
web.xml中配置
<servlet> <servlet-name>JSP Protect</servlet-name> <servlet-class>com.companyname.web.JspProtect</servlet-class> <init-param> <param-name>prefix</param-name> <param-value>/wp</param-value> </init-param> <init-param> <param-name>suffix</param-name> <param-value>.shtm</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>JSP Protect</servlet-name> <url-pattern>*.shtm</url-pattern> </servlet-mapping>
JspProtect类
1 private static final long serialVersionUID = -6821655106461234567L; 2 3 private String contextPath; 4 private String prefix; 5 private String suffix; 6 7 public void init(ServletConfig config) throws ServletException { 8 super.init(config); 9 contextPath = config.getServletContext().getContextPath(); 10 prefix = StringUtils.defaultIfEmpty( 11 config.getInitParameter("prefix"), ""); 12 suffix = StringUtils.defaultIfEmpty( 13 config.getInitParameter("suffix"), ".htm"); 14 } 15 //项目中其他的类调用此方法会进行处理 16 public void execute(RequestContext context) throws Exception { 17 String toUrl = context.getRequest().getRequestURI(); 18 toUrl = toUrl.replaceFirst(contextPath, prefix); 19 toUrl = toUrl.replace(suffix, ".jsp"); 20 21 context.getRequest().getRequestDispatcher(toUrl).forward(context.getRequest(), context.getResponse()); 22 23 }