log4j

Spring boot——logback 基础使用篇(一)

我与影子孤独终老i 提交于 2020-07-28 12:25:03
1 简单日志配置 spring boot内部使用Commons Logging来记录日志,但也保留外部接口可以让一些日志框架来进行实现,例如Java Util Logging,Log4J2还有Logback。如果你想用某一种日志框架来进行实现的话,就必须先配置,默认情况下,spring boot使用Logback作为日志实现的框架。 1.1 配置控制台日志的debug级别 默认情况下,spring boot从控制台打印出来的日志级别只有ERROR, WARN 还有INFO,如果你想要打印debug级别的日志,可以通过application.properites配置debug=true debug= true 1.2 在生产环境环境下,你可以通过命令行进行配置日志的debug级别 java -jar C:\Users\Administrator\Desktop\xx\demo.jar --debug 1.3 配置logging.level.*来具体输出哪些包的日志级别 logging.level.root= INFO logging.level.org.springframework.web = DEBUG logging.level.org.hibernate =ERROR 1.4 将日志输出到文件中 默认情况下spring boot是不将日志输出到日志文件中

Spring Boot 入门之基础篇(一)

时间秒杀一切 提交于 2020-07-28 07:54:35
原文地址: Spring Boot 入门之基础篇(一) 博客地址: http://www.extlight.com 一、前言 Spring Boot 是由 Pivotal 团队提供的全新框架,其设计目的是用来简化新 Spring 应用的初始搭建以及开发过程。该框架使用了特定的方式来进行配置,从而使开发人员不再需要定义样板化的配置。 本系列以快速入门为主,可当作工具小手册阅读 二、环境搭建 创建一个 maven 工程,目录结构如下图: 2.1 添加依赖 创建 maven 工程,在 pom.xml 文件中添加如下依赖: <!-- 定义公共资源版本 --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.6.RELEASE</version> <relativePath /> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

ZooKeeper学习笔记

最后都变了- 提交于 2020-07-28 04:00:46
教学视频 源码 - - - 01.课程介绍 02.概述 03.特点 04.数据结构 05.应用场景 06.下载地址 07.本地模式安装 08.配置参数解读 09.选举机制 10.节点类型 11.分布式安装 12.Shell命令操作 13.Stat结构体 14.监听器原理 15.写数据流程 16.创建ZooKeeper客户端 17.创建一个节点 18.获取子节点并监听节点变化 19.判断节点是否存在 20.服务器节点动态上下线案例分析 21.服务器节点动态上下线案例注册代码 22.服务器节点动态上下线案例全部代码实现 23.企业面试真题 - 01.课程介绍 ZooKeeper官网 ZooKeeper 3.4 Documentation 02.概述 Zookeeper是一个开源的分布式的,为分布式应用提供协调服务的 Apache 项目。 ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. All of these kinds of services are used in some form or another by

Springboot 系列(四)Spring Boot 日志框架

你。 提交于 2020-07-27 14:52:03
文章已经收录在 Github.com/niumoo/JavaNotes ,更有 Java 程序员所需要掌握的核心知识,欢迎Star和指教。 欢迎关注我的 公众号 ,文章每周更新。 注意:本 Spring Boot 系列文章基于 Spring Boot 版本 v2.1.1.RELEASE 进行学习分析,版本不同可能会有细微差别。 前言 Spring 框架选择使用了 JCL 作为默认日志输出。而 Spring Boot 默认选择了 SLF4J 结合 LogBack。那我们在项目中该使用哪种日志框架呢?在对于不同的第三方 jar 使用了不同的日志框架的时候,我们该怎么处理呢? <!-- more --> 1. 日志框架介绍 日志对于应用程序的重要性不言而喻,不管是记录运行情况还是追踪线上问题,都离不开对日志的分析,在 Java 领域里存在着多种日志框架,如 JUL, Log4j, Log4j2, Commons Loggin, Slf4j, Logback 等。关于 Log4j, Log4j2 和 Slf4j 直接的故事这里不做介绍,有兴趣可以自行百度。 2. SLF4 的使用 在开发的时候不应该直接使用日志实现类,应该使用日志的抽象层。具体参考 SLF4J 官方 。 下图是 SLF4J 结合各种日志框架的官方示例,从图中可以清晰的看出 SLF4J API 永远作为日志的门面

all jar files using my log4j. too much information on log file

ぃ、小莉子 提交于 2020-07-22 21:44:08
问题 I started learning log4j. It is awesome. But my project is tooo big. has so many jar files. when I set my log level to DEBUG, all other jar files debug messages are printing in my log file. With in a minute the logfile size increased to 5MB. I want to just display my log messages in my class. How I can do that ? My configuration is as follows log4j.properties # Define the root logger with appender file log = ./logs log4j.rootLogger = DEBUG, FILE # Define the file appender log4j.appender.FILE

all jar files using my log4j. too much information on log file

流过昼夜 提交于 2020-07-22 21:43:14
问题 I started learning log4j. It is awesome. But my project is tooo big. has so many jar files. when I set my log level to DEBUG, all other jar files debug messages are printing in my log file. With in a minute the logfile size increased to 5MB. I want to just display my log messages in my class. How I can do that ? My configuration is as follows log4j.properties # Define the root logger with appender file log = ./logs log4j.rootLogger = DEBUG, FILE # Define the file appender log4j.appender.FILE

Log4j2 JSONLayout not appending closing (]) square bracket

孤者浪人 提交于 2020-06-28 06:30:08
问题 Here is my log4j2.xml config file: <?xml version="1.0" encoding="UTF-8"?> <Configuration status="OFF"> <Appenders> <File name="JsonFile" fileName="logs/myLog.log" immediateFlush="true" append="false"> <JSONLayout complete="true" charset="UTF-8" compact="false" eventEol="false" properties="true"/> </File> </Appenders> <Loggers> <Root level="all" includeLocation="true"> <AppenderRef ref="JsonFile"/> </Root> </Loggers> </Configuration> The output looks as follows: [ { "timeMillis" :

Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar

空扰寡人 提交于 2020-06-17 09:37:05
问题 I have used geotools library, in my project I have added all the dependencies to the buildpath Downloaded the libraries from Sourseforge. Added the same to the library, When I try to execute the application, I am getting the below error. SLF4J: Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError. SLF4J: See also http://www.slf4j.org/codes.html#log4jDelegationLoop for more details. Exception in thread "main" java.lang

How to remove or replace newline from log messages log4j

百般思念 提交于 2020-06-13 08:26:29
问题 I am using below conversion pattern log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss.SSS Z} [%t] %-5p %c- %m%n but I want to remove new line characters. I have tried using %replace(%ex){'[\r\n]+', '\\n'}%nopex%n but it's not working %replace is not working. it only reading %r and then eplace 回答1: It seems you were not using the right syntax of the %replace - see Log4j Layouts for the right one. Using the right syntax, you could remove all the newlines using the following

How to format stacktrace in log4j2?

倖福魔咒の 提交于 2020-06-11 01:56:52
问题 By default log4j2 prints stacktrace on multiple lines, separated by newline characters. Something like: java.lang.NullPointerException: error enovountered at ... at ... at ... I want my stacktrace on a single line, something like, essentially using | as a delimiter rather than \n java.lang.NullPointerException: error enovountered at ... | at ... | at ... How will I accomplish something like this in log4j2? 回答1: As the PatternLayout documentation specifies, the %throwable family of conversion