How to setup SLF4J and LOGBack in a web app - fast--转载
原文:https://wiki.base22.com/display/btg/How+to+setup+SLF4J+and+LOGBack+in+a+web+app+-+fast
Logback is intended as a successor to the popular log4j project. It was designed, in addition to many individual contributors, by Ceki Gülcü, the founder of log4j. It builds upon experience gained in building industrial-strength logging systems going back as far as 1999. Logback-classic natively implements the SLF4J API so that you can readily switch back and forth between logback and other logging frameworks such as log4j or java.util.logging (JUL).
The Simple Logging Facade for Java or (SLF4J) serves as a simple facade or abstraction for various logging frameworks, e.g. java.util.logging, log4j and logback, allowing the end user to plug in the desired logging framework at deployment time.
If your working with a Maven web-app project, this procedure will get you setup to log with LOGBack through SLF4J super fast.
Step 0 - Add LOGBack dependency libraries.
Import the following libraries to your WEB-INF/lib folder:
- WEB-INF
- lib
- logback-classic.x.x.x.jar
- logback-core.x.x.x.jar
- slf4j-api-x.x.x.jar
- lib
Step 1 - Add LOGBack dependency to your Maven POM
Declare the following dependency in your Maven 2 pom.xml and Maven will grab the appropriate libraries for you during the build.
< dependency > < groupId >ch.qos.logback</ groupId > < artifactId >logback-classic</ artifactId > < version >1.0.13</ version > </ dependency > |
Step 2 - Import existing (starter) XML configuration files
You will likely want to start with a base configuration file that you can build upon. In Maven you can have a logging configuration for your main source and another for your testing. You can download starter configuration files for your project by clicking the links in the hierarchy below. Put them in your project according to the position indicated by the hierarchy shown.
- src
- main
- resources
- test
- resources
- main
Step 3 - Customize the XML configuration just enough to test
Open up the logback.xml file. If you used the starter provided in the link above, you'll find the following:
<? xml version = "1.0" encoding = "UTF-8" ?> < configuration > < appender name = "STDOUT" class = "ch.qos.logback.core.ConsoleAppender" > < layout class = "ch.qos.logback.classic.PatternLayout" > < Pattern >%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</ Pattern > </ layout > </ appender > < logger name = "com.base22" level = "TRACE" /> < root level = "debug" > < appender-ref ref = "STDOUT" /> </ root > </ configuration > |
You will notice that one logger is defined at a package level ("com.base22"). You can simply change that to match your application's package base. You can also declare additional loggers (packages and/or classes) if desired.
Step 4 - Put logging code in your classes
The last thing you need to do is drop some logging code in a class and test this whole setup.
Add the following to the imports section of your java code:
import org.slf4j.Logger; import org.slf4j.LoggerFactory; |
Add the following at the top of your class in the global section (just under the line that declares your class public class Whatever extends Whatever). Change the name of the class (MyClassName) in the getLogger method call, of course. Name it the same as the class you're dropping this code into.
static final Logger LOG = LoggerFactory.getLogger(MyClassName. class ); |
Throw some logging statements in your code somewhere where you know they'll be fired right away when you run your app. For example:
LOG.trace( "Hello World!" ); LOG.debug( "How are you today?" ); LOG.info( "I am fine." ); LOG.warn( "I love programming." ); LOG.error( "I am programming." ); |
Alternatively, you can just download this simple console test app and run it as a Java app from the command line or from within your IDE:
This class has a main method so it runs as a Java app and it will log one statement at each level.
Step 5 - Run your app and make sure it works
Finally, run your app and make sure it works. You should see log lines in your console. If it doesn't work, just review these steps a little more carefully and fiddle with it.
How to setup SLF4J and LOGBack in a web app - fast--转载的更多相关文章
- slf4j log4j logback关系详解和相关用法
slf4j log4j logback关系详解和相关用法 写java也有一段时间了,一直都有用slf4j log4j输出日志的习惯.但是始终都是抱着"拿来主义"的态度,复制粘贴下配 ...
- lombok+slf4j+logback SLF4J和Logback日志框架详解
maven 包依赖 <dependency> <groupId>org.projectlombok</groupId> <artifactId>lomb ...
- slf4j,log4j,logback 初步使用
log4j,slf4j,logback简单介绍见 LogBack简易教程 Logback浅析 简单的将,slf4j是一个日志的框架,有各种日志的接口,但是并不包含实际的写日志的方法. log4j,lo ...
- 跨过slf4j和logback,直接晋级log4j 2
今年一直关注log4j 2,但至今还没有出正式版.等不及了,今天正式向大家介绍一下log4j的升级框架,log4j 2. log4j,相信大家都熟悉,至今对java影响最大的logging系统,至今仍 ...
- java日志,(commons-loging 、log4j 、slf4j 、LogBack介绍)
如果对于commons-loging .log4j .slf4j .LogBack 等都已经非常清楚了,可以忽略本文.几次解决日志冲突问题时对这几个概念的简单总结,希望对这块基础没有理解透的同学能有所 ...
- slf4j 之logback日志之环境安装【一】
一.maven引用. 传送门:http://www.slf4j.org/manual.html#projectDep <dependency> <groupId>ch.qos. ...
- IDEA项目搭建十——使用slf4j和logback进行日志记录
.简介 java里面日志分为两部分一个门面.一个实现,我们所熟知的SLF4j.Log4j.Log4j2.Logback的日志组件slf4j是门面提供的统一的入口,具体实现由log4j.log4j2.l ...
- Java日志框架(Commons-logging,SLF4j,Log4j,Logback)
简介 在系统开发中,日志是很重要的一个环节,日志写得好对于我们开发调试,线上问题追踪等都有很大的帮助.但记日志并不是简单的输出信息,需要考虑很多问题,比如日志输出的速度,日志输出对于系统内存,CPU的 ...
- java日志之slf4j与logback简单使用
最近在开发遇到日志是使用slf4j与logback.xml的配置,所以就记录下来了. 1.导入这几个jar包: Logback 分为三个模块:logback-core,logback-classic, ...
随机推荐
- a标签中的label在IE下触发不了a标签的href链接(label标签——解析)
<a href="http://www.baidu.com/" target="_blank"> <span>百度</span&g ...
- 如何使用UDP进行跨网段广播
广播域首先我们来了解一下广播域的概念.广播域是网络中能接收任一台主机发出的广播帧的所有主机集合.也就是说,如果广播域内的其中一台主机发出一个广播帧,同一广播域内所有的其它主机都可以收到该广播帧.广播域 ...
- 10、Android数据存储
课程目标: 掌握Android中数据存储的几种方式 熟练使用PreferenceActivity&PreferenceScreen做专业的Setting功能 熟练使用SQLite3来存储数据 ...
- 设计模式_Flyweight_享元模式
形象例子: 每天跟MM发短信,手指都累死了,最近买了个新手机,可以把一些常用的句子存在手机里,要用的时候,直接拿出来,在前面加上MM的名字就可以发送了,再不用一个字一个字敲了.共享的句子就是Flywe ...
- Tomcat问题笔记
1. Tomcat服务器只能同步WebContent目录到webapps下面,如果WebContent里面的.html文件引用了与WebContent文件夹同级目录下的一个.js文件,Tomcat服务 ...
- python 网络编程(三)---TCP 服务器端客户端实现
客户端 客户端主要有4个步骤: 1)创建一个socket以连接服务器. socket = socket.socket(family, type),family参数代表地址家族,可为AF_INET(包括 ...
- 【Spark学习】Apache Spark项目简介
引言:本文直接翻译自Spark官方网站首页 Lightning-fast cluster computing 从Spark官方网站给出的标题可以看出:Spark——像闪电一样快的集群计算 Apache ...
- CentOS 6.5 安装配置
关于CentOS的安装,网上有很多详细的教程.其实重点就在于硬盘的分区和软件的定制这两块.下面我在VirtualBox虚拟机上安装 CentOS-6.5-i386-minimal. 1.在起始菜单处选 ...
- HDU-4678 Mine 博弈SG函数
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4678 题意就不说了,太长了... 这个应该算简单博弈吧.先求联通分量,把空白区域边上的数字个数全部求出 ...
- jqgrid使用sql row_number进行分页
背景 系统中使用了jqgrid的展示,现在要处理10w+的数据量 现状 使用了全查询的,查询到了10w+的数据放到了datatable中,每次页面刷新需要9秒多,并且传递给另一个dll来处理一些事情. ...