jsp中打印log日志
<%@ 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 = "";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>