validitycheckfilter.java

java实现的可配置的工作流引擎,采用jsp+javabean实现

package com.hongsoft.res.dispatcher;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;

public class ValidityCheckFilter extends HttpServlet implements Filter {

    private static final long serialVersionUID = 944623501989684290L;

    private FilterConfig filterConfig;

    // Handle the passed-in FilterConfig
    public void init(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
    }

    // Process the request/response pair
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain) {
        try {
            // HttpServletRequest req = (HttpServletRequest) request;
            // HttpServletResponse res = (HttpServletResponse) response;
            // HttpSession session = req.getSession(false);
            filterChain.doFilter(request, response);
        } catch (ServletException sx) {
            filterConfig.getServletContext().log(sx.getMessage());
        } catch (IOException iox) {
            filterConfig.getServletContext().log(iox.getMessage());
        }
    }

    public void setFilterConfig(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
    }

    public FilterConfig getFilterConfig() {
        return this.filterConfig;
    }

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