log4j2

#1 系列目录 jdk-logging、log4j、logback日志介绍及原理 jcl与jul、log4j1、log4j2、logback的集成原理 slf4j与jdk-logging、log4j1、log4j2、logback的集成原理 slf4j、jcl、jul、log4j1、log4j2、logback大总结 前面介绍了jdk自带的logging、log4j1、log4j2、logback等实际的日志框架 对于开发者而言，每种日志都有不同的写法。如果我们以实际的日志框架来进行编写，代码就限制死了，之后就很难再更换日志系统，很难做到无缝切换。 java web开发就经常提到一项原则：面向接口编程，而不是面向实现编程 所以我们应该是按照一套统一的API来进行日志编程，实际的日志框架来实现这套API，这样的话，即使更换日志框架，也可以做到无缝切换。 这就是commons-logging与slf4j的初衷。 下面就来介绍下commons-logging与slf4j这两个门面如何与上述四个实际的日志框架进行集成的呢 介绍之前先说明下日志简称： jdk自带的logging->简称 jul (java-util-logging) apache commons-logging->简称 jcl #2 apache commons-logging 先从一个简单的使用案例来说明 ##2.1

( F.Y.I. I already searched out many documents in Internet. I'm using storm-0.10.0-beta1. Configuration file of log4j2 in Storm is worker.xml ) Now, I try to use log4j2. I'm searching out way of deleting old logs but I cannot find out. Part of configuration is like below. <RollingFile name="SERVICE_APPENDER" fileName="${sys:storm.home}/logs/${sys:logfile.name}.service" filePattern="${sys:storm.home}/logs/${sys:logfile.name}.service.%d{yyyyMMdd}"> <PatternLayout> <pattern>${pattern}</pattern> </PatternLayout> <Policies> <TimeBasedTriggeringPolicy interval="1" modulate="true"/> </Policies>

I have a requirement that I need to store audit information in a TEXT file . I planned to write the audit information using Apache Log4j . Seems to be reliable option. But, I should be able to write the Audit information even the fileSize reaches 3GB. Does the log4j supports the fileSize even at GigaBytes ?. Or with a Quick Question, What is the MaximumFileSize can be supported in Log4j . NOTE : I could not go for RollingFileAppender or DailyFileAppender, I need to log the information Only in One text file , where some other components are reading this file content and doing some process. By

I've extended log42 logger. The idea: I should pass enum to log method, in order to choose appender in runtime. My interface: public interface MyLoggerInterface { void info(String logMessage, MyLoggerAppenderEnum... appender); public static MyLoggerInterface getLogger(Class aClass, MyLoggerAppenderEnum... appender) { return MyLoggerInterfaceImpl.getLogger(aClass, appender); } } implementation: public class MyLoggerInterfaceImpl extends Logger implements MyLoggerInterface { private static final String FQCN = MyLoggerInterfaceImpl.class.getName(); protected MyLoggerInterfaceImpl(LoggerContext

工欲善其事，必先利其器。我们知道，Java开发最难的部分，就是初期框架的搭建工作。本文将记录一个可用的Java开发框架的搭建过程，以期满足大多数Java项目的开发。 本项目采用Maven管理Jar包，主要技术包括： MVC框架：SpringMVC 数据库：MySql ORM框架：Mybatis 日志组件：Log4j2 模板引擎：FreeMarker JS库：jQuery-1.9 其它技术会随着项目的变化而增删。 一、pom.xml 以下为pom.xml中所要依赖的jar包： <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.1</version> <scope>test</scope> </dependency> <!-- servlet支持 --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <dependency> <groupId>javaee</groupId> <artifactId>javaee-api</artifactId> <version>5<

I would like to change some properties from the log4j2.xml file depending on the my application.properties, so for example define some properties and then substitute in the log4j2 those properties that are parameters. I ran different approaches but I still not get the right thing. I would like to have different configs depending on the environment (DEV, QA or PROD). Can someone guide me how to accomplish this? So, I'm trying to have this in my properties #Place holders for log4j2.xml file log.file.path=/opt/tomcat/logs log.file.name=dummydummy log.file.size=100 MB log.level=DEBUG Please find

Mybatis集承ehcache 导入pom依赖： <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.cjh</groupId> <artifactId>ssm</artifactId> <version>1.0-SNAPSHOT</version> <packaging>war</packaging> <name>ssm Maven Webapp</name> <!-- FIXME change it to the project's website --> <url>http://www.example.com</url> <properties> <project.build.sourceEncoding>UTF-8</project.build