log4j2

Log4j2 - Configure RolloverStrategy to delete old log files

由 戏子无情 提交于 2020-01-10 05:14:08
问题 I'm trying to configure log4j to keep only specified amount of backup files or keep files that are not older than some age. Ultimately I want to have time [daily] based triggering policy and keep 30 backup files or delete files that are older then 30 days. After doing some research I learned that I can't specify max number of backup files when using time policy however I came across this issue https://issues.apache.org/jira/browse/LOG4J2-435 and this documentation fragment http://logging

Spring behind the scenes logging

由 生来就可爱ヽ(ⅴ＜●) 提交于 2020-01-10 03:18:30
问题 I use log4j2 and I can't get logging from spring. when I write my own logger.debug(...); it works but it's the same as System.out.println(...); . I want to know what happened behind the scenes in spring. show the created bean or debuggig error like 400 ... I try this Conf but nothing happened : <?xml version="1.0" encoding="UTF-8"?> <Configuration status="INFO"> <Appenders> <Console name="CONSOLE" target="SYSTEM_OUT"> <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n

WebFlux系列(六)WebClient VS RestTemplate

由 [亡魂溺海] 提交于 2020-01-09 20:20:44
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> #Java#Spring#WebFlux#WebClient#RestTemplate# WebClient和RestTemplate性能比较 视频讲解: https://www.bilibili.com/video/av82675791/ 服务器端 WebfluxServerApplication.java package com.example.webfluxserver; import lombok.extern.log4j.Log4j2; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; import java.util.List; @Log4j2 @SpringBootApplication public class WebfluxServerApplication

使用log4j2的常用要点

由 与世无争的帅哥 提交于 2020-01-08 15:24:07
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> ##日志配置 log4j2是使用 log4j2.xml 配置文件，区别于log4j，配置项也有一些变化。 以下是一个最常用的控制台输出日志的配置： <?xml version="1.0" encoding="UTF-8"?> <Configuration> <Appenders> <Console name="Console" target="SYSTEM_OUT"> <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/> </Console> </Appenders> <Loggers> <Root level="info"> <AppenderRef ref="Console"/> </Root> </Loggers> </Configuration> ##兼容其他日志组件 一般常用的日志组件log4j(1.2.x),common-log(jcl),self4j,全部桥接，看着都累，但是很实用，把所有日志API都适配过来，全用log4j2处理。 依赖配置（详见 log4j2 maven-artifacts ）如下： <dependency> <groupId>org.apache

How to Create a Custom Appender in log4j2?

由 二次信任 提交于 2020-01-08 11:12:40
问题 As disscussed in this link : How to create a own Appender in log4j? For creating a custom appender in log4j 1.x we have to extend the AppenderSkeleton class and implements its append method. Similarly How we can create a custom appender in log4j2 as we dont have AppenderSkelton class to extend and all other appender extend AppenderBase class . 回答1: This works quite differently in log4j2 than in log4j-1.2. In log4j2, you would create a plugin for this. The manual has an explanation with an

How to Create a Custom Appender in log4j2?

由 久未见 提交于 2020-01-08 11:11:19
问题 As disscussed in this link : How to create a own Appender in log4j? For creating a custom appender in log4j 1.x we have to extend the AppenderSkeleton class and implements its append method. Similarly How we can create a custom appender in log4j2 as we dont have AppenderSkelton class to extend and all other appender extend AppenderBase class . 回答1: This works quite differently in log4j2 than in log4j-1.2. In log4j2, you would create a plugin for this. The manual has an explanation with an

Get the file name from complete path in log4j2 xml

由 独自空忆成欢 提交于 2020-01-07 08:35:33
问题 In my log4j2.xml file, I get the complete path of the logfile by passing a system property -Dlogfilename=/home/user/logs/server Log4j2 configuration: <Property name="logFile">${sys:logfilename:-/home/user/logs/server}</Property> As an added requirement, I need to get the name of the log file from the above property and I cannot pass a new system property. How can I get just the name of the file from the complete path? I dont have any experience with XML other than its use for data transport.

How to check if log4j2 has been configured or not

由 六月ゝ 毕业季﹏ 提交于 2020-01-06 21:21:41
问题 We're all familiar with this message when you don't provide a configuration for log4j2: ERROR StatusLogger No log4j2 configuration file found. Using default configuration: logging only errors to the console. How can I check if log4j2 is not yet configured so that I can initialize with a default configuration if needed? 回答1: I ended up creating my own ConfigurationFactory and register it with -Dlog4j.configurationFactory That way your ConfigurationFactory will know whether it's been invoked

Too many open files due to log4j config

由 廉价感情. 提交于 2020-01-06 07:21:11
问题 We are using log4j 2.5. My question is in regards to the ConferenceLog so please disregard other configurations below. log4j2.xml file: <?xml version="1.0" encoding="UTF-8"?> <Configuration monitorInterval="180"> <Properties> <!-- change the path to conference logs below to fit your system --> <Property name="LOG_DIR">C:\CodeRepos\logs</Property> <Property name="PATTERN">%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n</Property> </Properties> <Appenders> <Console name="Console"

How to create Custom Rolling File appender in log4j2 - customized file name

由 落花浮王杯 提交于 2020-01-05 08:02:07
问题 I would like to create the log files using log4j2. My requirement: I have to use the same log file name like below even when rolling the file (once it reaches 5MB). Please note, i have to use the same timestamp (110923) until the server runs continuously. LogFileName_110923_1.log LogFileName_110923_2.log, etc When the server restarts I will have to create new log file with different timestamps. Like, LogFileName_1834345_1.log LogFileName_1834345_2.log, etc I think i have to use custom rolling
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