Servlet多路径映射使用场景

    <servlet>
        <servlet-name>ServletDemo</servlet-name>  
        <servlet-class>www.hw.web.ServletDemo</servlet-class>  
    </servlet>
    <servlet-mapping>
        <servlet-name>ServletDemo</servlet-name>  
        <url-pattern>/servletDemo/*</url-pattern>   
    </servlet-mapping>

public class ServletDemo extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //
        int money = 100;

        String path = req.getRequestURI();
        path = path.substring(path.lastIndexOf("/"));
        if ("/vip".equals(path)) {
            System.out.println("vip九折" + money * 0.9);
        } else if ("/vvip".equals(path)) {
            System.out.println("vvip五折" + money * 0.59);
        } else {
            System.out.println("其它打骨折" + money * 100);
        }

    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        System.out.println("post请求");
    }

}