log4j

解决IntelliJ IDEA控制台乱码问题[包含程序运行时的log4j日志以及tomcat日志乱码]

泪湿孤枕 提交于 2021-02-20 19:53:06
解决IntelliJ IDEA控制台乱码问题[包含程序运行时的log4j日志以及tomcat日志乱码] 参考文章: (1)解决IntelliJ IDEA控制台乱码问题[包含程序运行时的log4j日志以及tomcat日志乱码] (2)https://www.cnblogs.com/zhxn/p/8690566.html 备忘一下。 来源: oschina 链接: https://my.oschina.net/stackoom/blog/4958010

JaCoCo stopped working after setting the log4j.configurationFactory system property

早过忘川 提交于 2021-02-19 10:49:06
问题 JaCoCo stopped working after setting the log4j.configurationFactory system property. java.lang.reflect.InvocationTargetException FATAL ERROR in native method: processing of -javaagent failed at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.instrument

JaCoCo stopped working after setting the log4j.configurationFactory system property

∥☆過路亽.° 提交于 2021-02-19 10:44:42
问题 JaCoCo stopped working after setting the log4j.configurationFactory system property. java.lang.reflect.InvocationTargetException FATAL ERROR in native method: processing of -javaagent failed at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.instrument

log4j for standalone java project

折月煮酒 提交于 2021-02-19 06:27:05
问题 I was thinking to use log4j for my standalone java project. Is it possible to use it for java project(not a web app). If its possible then how should I be able to initialize the properties file and where should I put the properties file(directory structure). Any help is appreciated. 回答1: Yes, it is possible, we do it all the time. You just need a log4j.properties file on your classpath, which in most cases means in the base directory of your jar file. If you wish to have multiple properties

Log4j appender for debug output if test fails

╄→гoц情女王★ 提交于 2021-02-19 01:35:15
问题 I would like to set up my test-logging so that log output is mainly suppressed - unless a test fails. then I would like to have the debug output. I know the manual solution of just modifying the log4j.properties in the test classpath or just having debug logging always active for tests - but I don't want to spam the console with unnessesary output for green tests. For failing tests I want the automatic build to give me the debug output in case there are some weired environment issues going on

SSM框架下log4j的配置和使用

泄露秘密 提交于 2021-02-17 20:18:10
一、引入相关包和依赖 我用的是pom文件的引入,我使用的是slf4j+log4j的方式,还有另一种方式为commons-logging+log4j的方式,这里不再多述,需要的朋友可以参考的资料。 <!--slf4j+log4j--> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.25</version> </dependency> 二、配置log4j.properties文件 关于log4j.properties配置文件的配置网上一抓一大把,我这里只贴出自己的配置: #//注意这里不要用INFO,DEBUG等 改个名字 log4j.rootLogger=infoA,errorA,stdout,DEBUGA #过滤掉spring框架下的额外日志 log4j.category.org.springframework = WARN #输出到控制台 log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j

Logger日志打印规范

妖精的绣舞 提交于 2021-02-13 22:52:13
首先来看一下比较常用的Logger日志级别(部分未列出): error - 运行期错误日志记录,应该有专门的error日志文件。; warn - 警告信息,如程序调用了一个即将作废的接口,接口的不当使用,运行状态不是期望的但仍可继续处理等; info - 有必要的事件信息记录。 debug - 调试信息,业务处理进行状态,当前的变量值等; trace - 一些更详细的跟踪信息; 鉴于我们是一个金融系统,流量还是不算很大,我个人认为debug级别和info级别可以统一归为info级别下打印,这是考虑到现在系统稳定性不够,处于一个快速迭代开发的过程中,线上问题可能随时都有,所以将业务流转与部分变量值打印出来还是很有必要的。error记录错误日志,但如果错误是预期会发生的,并且已经有了其他的处理流程,则建议使用warn级别。例如在try-catch中catch块里处理后继续流程的日志记录。 1.Logger对象的定义: <strong> private static final Logger logger = LoggerFactory.getLogger(Test.class);</strong> 2.日志中不出现计算或方法调用,防止在打印日志的时候报错。 之前在上家公司的时候就确实出现过因打印日志而系统RunTimeException的,不应该出现。 3.try

蚂蚁金服分布式链路跟踪组件 SOFATracer 总览 | 剖析

前提是你 提交于 2021-02-12 08:20:29
2019新春支付宝红包技术大揭秘在线峰会将于03-07日开始,点击 这里 报名届时即可参与大牛互动。 SOFA Scalable Open Financial Architecture 是蚂蚁金服自主研发的金融级分布式中间件,包含了构建金融级云原生架构所需的各个组件,是在金融场景里锤炼出来的最佳实践。 SOFATracer 是一个用于分布式系统调用跟踪的组件,通过统一的 TraceId 将调用链路中的各种网络调用情况以日志的方式记录下来,以达到透视化网络调用的目的,这些链路数据可用于故障的快速发现,服务治理等。 本文为《剖析 | SOFATracer 框架》第一篇。《剖析 | SOFATracer 框架》系列由 SOFA 团队和源码爱好者们出品,项目代号: SOFA:TracerLab/ ,文章尾部有参与方式,欢迎同样对源码热情的你加入。 0. 前言 在单体应用时代,我们不需要花费时间去关心调用链路这个东西。 但是链路跟踪不仅仅是在分布式场景下才会有,即使是单体应用,同样也会存在调用链路。 例如,我们把应用中的每个服务接口作为一个链路节点,那么从请求进来到返回响应,把这个过程中多历经的所有的方法接口串联起来,就能组成一条完整的链路,如下图所示: 对于单体应用而言,如果访问一个资源没有成功,那么我们可以很快的锁定是哪一台机器,然后通过查询这台机器上的日志就能定位问题。

Unable to separate log file on Log4J2

纵然是瞬间 提交于 2021-02-11 17:22:19
问题 I would like to separate logs with each thread which I gave as RequestId. However, there is a problem I do not know. Maybe, I made mistake/s. Unable to create file C:\XXXX\XXXXXX\XXXX\logs\${ctx:RequestId}.log java.io.IOException: The filename, directory name, or volume label syntax is incorrect at java.io.WinNTFileSystem.canonicalize0(Native Method) at java.io.WinNTFileSystem.canonicalize(WinNTFileSystem.java:428) at java.io.File.getCanonicalPath(File.java:618) at java.io.File

Can't use hbase-shaded-client jar because of its internal dependency to log4j-1.2.17(CVE-2019-1757)

≡放荡痞女 提交于 2021-02-11 13:52:51
问题 Is there a way to exclude it.I did give it a try but got ClassNotFoundException: org.apache.log4j.Level I do see that hbase-shaded-client do have slf4j dependency so there might be a way to exclude log4j and use slf4j but I'm not able to. 回答1: Yes, you can exclude log4j , but you must add back in log4j-over-slf4j . <dependency> <groupId>org.apache.hbase</groupId> <artifactId>hbase-client</artifactId> <version>[some version]</version> <exclusions> <exclusion> <artifactId>log4j</artifactId>