Filter 설정

1. web.xml 필터 설정

       <filter>
	       <filter-name>MainFilter</filter-name>
	       <filter-class>secretary.common.filter.MainFilter</filter-class>
		</filter>
		<filter-mapping>
		       <filter-name>MainFilter</filter-name>
		       <url-pattern>/*</url-pattern>
		</filter-mapping>

2. Filter Class 생성

package secretary.common.filter;

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 org.apache.log4j.Logger;


public class MainFilter implements Filter {

	/**
	 * 1. 세션에 사용자 정보가 있는지 체크
	 * 2. 세션에 사용자 정보가 없으면 id/pw 화면으로
	 */	
	// DEBUG, INFO, WARN, ERROR, FATAL 
	public Logger logger = Logger.getLogger(this.getClass());	
 
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {       
		// UTF-8로 Response 인코딩
		response.setCharacterEncoding("UTF-8");		
		String requestUri = ((HttpServletRequest)request).getRequestURI();
		String contextPath = ((HttpServletRequest)request).getContextPath();		
		logger.info("contextPath : "+contextPath);
		logger.info("requestUri : "+requestUri);
    	
        chain.doFilter(request, response);
    }
 
    @Override
    public void init(FilterConfig config) throws ServletException {
    	//logger.info("===== init filter =====");
    }    
    @Override
    public void destroy() {
    	//logger.info("===== destroy filter =====");
    }
 
}