checklogin.java

Can tell the new comer whether is the right user,and checks the information from Database.

package grant;

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.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class CheckLogin implements Filter {
	protected FilterConfig filterConfig = null;

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

	public FilterConfig getFilterConfig() {
		return filterConfig;
	}

	public void init(FilterConfig filterConfig) throws ServletException {
		this.filterConfig = filterConfig;
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		System.out.println("杩囨护鍣ㄦ