actionfilter.java~56~

一个基于JAVA的BS结构的宠物诊所管理系统.是当年在学校时写的,大家指点一下.

package gxaccp.t07.guoneng_wei.petclinicmanagesystem.filter;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class ActionFilter
    extends HttpServlet implements Filter {
  private FilterConfig filterConfig;
  //Handle the passed-in FilterConfig
  public void init(FilterConfig filterConfig) throws ServletException {
    this.filterConfig = filterConfig;
  }

  //Process the request/response pair
  public void doFilter(ServletRequest request, ServletResponse response,
                       FilterChain filterChain) {
    try {
      HttpServletRequest rq = (HttpServletRequest) request;
      HttpServletResponse rp = (HttpServletResponse) response;

      boolean flag = false;

      String rqURI = rq.getRequestURI();

      if (rqURI.indexOf(".do") != -1) { //请求的是 Action.do
        Enumeration e = rq.getParameterNames();
        if (e == null||!e.hasMoreElements()) {
          flag = true;
        }
      }

      String requestMethod=rq.getMethod();
      //System.out.println(requestMethod);//POST/GET


      if (flag) {
        rq.getRequestDispatcher("/IllegalAccessError.jsp").forward(request, response);
        return ;
      }

       filterChain.doFilter(request, response);

    }
    catch (ServletException sx) {
      filterConfig.getServletContext().log(sx.getMessage());
    }
    catch (IOException iox) {
      filterConfig.getServletContext().log(iox.getMessage());
    }
    System.out.println(">>>>>>>>>>>>>>>>走过ActionFilter>>>>>>>>>>>>>>>>");
  }

  //Clean up resources
  public void destroy() {
  }
}