离开下班还有点时间，正好整理出2个日志系统对比发现，slf4j+logback 组合果然比log4j+commons-logging 高不少。少说废话看测试代码
1.测试类和方法选择同一个函数，大概是10000条记录放入list中，然后取出，分别用2个日志做日志记录 对比运行时间
测试代码
TestLinkList.JAVA
package com.testLog;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
[color=red]import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;[/color]
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/***********************************************************************
*
* TestLinkList.java
* @copyright Copyright: 2009-2012
* @creator 周辉<br/>
* @create-time May 20, 2009 4:30:14 PM
* @revision $Id: *
***********************************************************************/
public class TestLinkList {
private static final Log log = LogFactory.getLog(TestLinkList.class);
//private static final Logger log = LoggerFactory.getLogger(TestLinkList.class);
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
long startTime=System.currentTimeMillis();
//List<StudentBean> list =getList();
List<StudentBean> list =getLinkList();
getListBean2(list);
long end=System.currentTimeMillis();
log.info("list:::;"+list.size());
log.info("time:::;"+String.valueOf(end-startTime));
}
public static List<StudentBean> getList(){
List<StudentBean> list= new ArrayList<StudentBean>();
for (int i=0;i<10000;i++){
StudentBean st= new StudentBean();
st.setId(i);
st.setPassword("123456"+i);
st.setUrl("http://127.0.0.1/");
st.setUsername("zhouhui"+i);
list.add(st);
}
return list;
}
public static List<StudentBean> getLinkList(){
List<StudentBean> list= new LinkedList<StudentBean>();
for (int i=0;i<10000;i++){
StudentBean st= new StudentBean();
st.setId(i);
st.setPassword("123456"+i);
st.setUrl("http://127.0.0.1/");
st.setUsername("zhouhui"+i);
list.add(st);
}
return list;
}
public static void getListBean(List<StudentBean> list){
for (int i=0;i<list.size();i++){
StudentBean studentBean=(StudentBean)list.get(i);
log.info("username:::::::"+studentBean.getUsername());
}
}
public static void getListBean2(List<StudentBean> list){
for (StudentBean studentBean: list){
log.info("username:::::::"+studentBean.getUsername());
}
}
public static void get(){
long startTime=System.currentTimeMillis();
//List<StudentBean> list =getList();
List<StudentBean> list =getLinkList();
getListBean2(list);
long end=System.currentTimeMillis();
log.info("list:::;"+list.size());
log.info("time:::;"+String.valueOf(end-startTime));
}
}
先用LOG4J+commons-logging 测试
运行结果 [color=red]使用了1891毫秒[/color]
2009-05-20 16:53:33,953 [com.testLog.TestLinkList]-[INFO] list:::;10000
2009-05-20 16:53:33,953 [com.testLog.TestLinkList]-[INFO] time:::;1891
然后修改代码用slf4j+logback 测试
注释代码private static final Log log = LogFactory.getLog(TestLinkList.class);
使用private static final Logger log = LoggerFactory.getLogger(TestLinkList.class);
这里测试用WEB JSP 调用该类
JSP 代码 index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<% com.testLog.TestLinkList test = new com.testLog.TestLinkList();
test.get();
%>
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
This is my JSP page. <br>
</body>
</html>
tomcat 发布程序 运行
http://localhost:8081/testLog/index.jsp
控制台打出运行时间
2009-05-20 04:59:50:234 INFO c.t.TestLinkList - list:::;10000
2009-05-20 04:59:50:234 INFO c.t.TestLinkList - time:::;641
运行时间 [color=red]641毫秒[/color]
2个对比看出 slf4j+logback 性能是比log4j+commons-logging 组合高
详细代码见附件
