四季如風

[codes=java]
/**
*
*/
package cn.org.jock.filter;

import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.FilterChain;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletResponse;

/**
* @author jock
*
*/
public class AuthorizationFilter implements Filter {

 /*
  * (non-Javadoc)
  *
  * @see javax.servlet.Filter#destroy()
  */
 public void destroy() {
   // TODO Auto-generated method stub

 }

 /*
  * (non-Javadoc)
  *
  * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest,
  *      javax.servlet.ServletResponse, javax.servlet.FilterChain)
  */
 public void doFilter(ServletRequest request, ServletResponse response,
     FilterChain chain) throws IOException, ServletException {
   HttpServletRequest req = (HttpServletRequest) request;
   HttpServletResponse res = (HttpServletResponse) response;

   HttpSession session = req.getSession(true);

   String username = (String) session.getAttribute(“username”);

   if (username == null || “”.equals(username)) {
     // 跳转到登陆页面
     res.sendRedirect(“/login.jsp”);
   } else {
     chain.doFilter(request, response);
   }

 }

 /*
  * (non-Javadoc)
  *
  * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
  */
 public void init(FilterConfig arg0) throws ServletException {
   // TODO Auto-generated method stub

 }

}

[/codes]
更多详细内容 »

Tags: filter, 源码

作者：堕落天使

[codes=java]
package cn.org.jock.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.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public final class LogFilter implements Filter {
 private FilterConfig filterConfig = null;

 private static final Log log = LogFactory.getLog(LogFilter.class);

 public void doFilter(ServletRequest request, ServletResponse response,
     FilterChain chain) throws IOException, ServletException {

   final long start = System.currentTimeMillis();
   final String address = request.getServerName();
   
   final String file = ((HttpServletRequest) request).getRequestURI();
   chain.doFilter(request, response);

   log.info(“["+address + "_" + file + "]||[time="
       + (System.currentTimeMillis() - start)+"]“);
 }

 public void destroy() {
 }

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

[/codes]

web.xml的配置 更多详细内容 »

Tags: filter, 源码

作者：堕落天使