request中取得一些常用参数

request.getRemoteAddr();//访问者IP  
request.getRequestURI();//访问页IP  
  
  
String Agent = request.getHeader("User-Agent");
StringTokenizer st = new StringTokenizer(Agent,";");
st.nextToken(); 
st.nextToken();//得到访问者的浏览器名
System.getProperty("os.name");//得到访问者的操作系统名       
request.getAttribute("title");//得到标题
if(visitpagetitle==null||visitpagetitle.equals("")){
       visitpagetitle="无标题";
}
String backIP=req.getHeader("Referer");//得到父页面
if(backIP==null||backIP.equals("")){
       backIP="用户直接访问";
} 
 

FROM:http://blog.youkuaiyun.com/zwhfyy/archive/2007/05/16/1611564.aspx