jsp中打印log日志

[html]  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
    pageEncoding="UTF-8"%>  
<%@ page import="org.apache.log4j.Logger" %>  
<%@ page import="java.util.*,java.io.*,java.text.*,java.net.*" %>  
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">  
<html>  
<head>  
<title>打印日志</title>  
  
</head>  
  
<body>  
<%! public static final String QUERY_PARAM = "queryParam";%>  
    <%  
        Logger log = Logger.getLogger(this.getClass());  
        // public static final String QUERY_PARAM = "queryParam";  
        Map parameterMap = request.getParameterMap();  
          
        StringBuilder sb = new StringBuilder();  
        boolean and = false;  
        String queryParam = null;  
        for (Iterator iter = parameterMap.keySet().iterator(); iter.hasNext();) {  
            String name = (String) iter.next();  
            String[] values = (String[]) parameterMap.get(name);  
            String valueStr = "";  www.zzzyk.com
            for (int i = 0; i < values.length; i++) {  
                valueStr = (i == values.length - 1) ? valueStr + values[i]  
                        : valueStr + values[i] + ",";  
            }  
            //如果有乱码有需要转码  
            sb.append(name).append("=").append(valueStr).append(";");  
        }  
        queryParam = sb.toString();  
        log.info("alipay支付宝后台回调地址==url:"+request.getRequestURL().toString()+";params:"+queryParam);  
     %>  
</body>  
</html>

补充：Web开发 , Jsp ,