log4j

I use Robot Framework with custom keywords implemented in java libraries. Messages written directly to System.out from my java classes are visible in the robot output - as promised in documentation. However, since the keyword implementations are reusable components, independent from robot framework, I wanted to have more flexible logging there and not using System.out directly. I thought if I redirect my log output to System.out (with log4j's ConsoleAppender), the messages will be visible in robot output. Unfortunately it does not work. My log4j properties file: log4j.appender.Stdout=org

I was using WAS as my application server for deploying ear project.Presently changed to Glassfish . I am using log4j.xml file for logging. Logging is not working in Glassfish. Is there any dependency in using log4j.xml with glassfish. Any suggestions/pointers is appreciated If your log4j library is included within your EAR file, then check your app server's JVM properties to ensure the log4j.configuration property is set: Login to the Glassfish Admin Console (http://[hostname]:4848/) For your server, navigate to Configuration > JVM Settings > JVM Options If an entry for -Dlog4j.configuration

文章链接: https://pengcheng.site/2019/11/17/log4j-he-log4j2-zai-springboot-zhong-de-xing-neng-dui-bi/ 前言 在 java 项目中最常用的三大日志框架是 logback ， log4j ， log4j2 。其中 logback 是 springboot 的默认框架。由于历史原因，我手上有个springboot项目的日志框架是用的 log4j 。在对某个接口进行压测和性能优化的时候发现，打印同步日志会导致接口的性能缩水，所以当时直接把性能要求高的接口的日志关闭掉了。随着系统的逐渐复杂，重要性越来越高，定位问题的难度越来越大，我逐渐感觉到日志的的重要性。所以优化日志势在必行。 我是从两个方面来考虑 优化日志 这个问题的。 更换性能更高的日志框架； 使用异步日志或者延时刷盘的日志配置。 对第一个问题，很容易就可以Google到，目前性能表现最好的日志框架是 log4j2 ，所以直接把日志框架替换成 log4j2 就可以了。 对于第二个问题，因为当前日志是同步的，需要把“打印日志”这个操作完成之后才会运行接下来的业务代码，而“打印日志”通常是要输出到控制台或者文件中的，IO开销很大，如果把这个过程变成异步的应该能从一定程度上提高性能表现。 不知道在哪听到的两句话，想在这里分享一下：

I am using Custom Logger for my project eg. class MyLogger. With that i am able to log the message correctly but Its not logging the Class & Method name correctly from where log initiated. So I think may we need to specify MyLoggger in log4j.xml but I don't know where & how ? All suggestions are appreciated. Thanks. If you have a class MyClass: package com.acando.norolnes; public class MyClass { public String foo; public int bar; } That you want to custom format when logging, you can create a custom ObjectRenderer: package com.acando.norolnes; import org.apache.log4j.or.ObjectRenderer; public

基本的日志文件 　　(1)在resources中导入log4j.xml文件 　　(2)在pom文件中导入log4j桥接的包 　　<dependency> 　　　　<groupId>log4j</groupId> 　　　　<artifactId>log4j</artifactId> 　　　　<version>版本信息</version> 　　</dependency> (3)使用时，只需在指定的类中创造一个实例化对象 　　private static Log logger = LogFactory.getLog(类名.class); 　　假如使用xml文件时，需要在spring.xml中读取文件 　　<context:property-placeholder location="classpath:log4j.properties" /> commons-logging 只能依赖单个日志 　　 　　(1)在resources中导入log4j.xml文件 　　(2)在pom文件中导入log4j桥接的包，这里是用的是commons-logging 　　　　<dependency> 　　　　　　<groupId>org.apache.logging.log4j</groupId> 　　　　　　<artifactId>log4j-jcl</artifactId> 　　　　　　<version