log4j

Can IntelliJ create hyperlinks to the source code from log4j output?

不想你离开。 提交于 2019-12-05 02:38:32
In the IntelliJ console, stack traces automatically contain hyperlinks that bring you to the relevant source files. The links appear at the end of each line in the format (Log4jLoggerTest.java:25). I can configure log4j to output text in a similar format. log4j.appender.Console.layout.ConversionPattern=%d{ABSOLUTE} (%F:%L) - %m%n In eclipse, the console automatically turned text like this into links. In IntelliJ, the stack traces are links but my own output in the same form remains un-linked. Is there any way to get IntelliJ to do the same? Yes you can, try this pattern: <param name=

How do I redirect a javaw.exe console output to a log file?

断了今生、忘了曾经 提交于 2019-12-05 02:11:49
I am wanting to start my Java program from a batch file. This is the script I want to use to start the app but the problem is that I am not able to get the console output to redirect to a log file. Can anyone offer any hints without having to edit any code, and by using Java command line options or something? @echo off set TASK=MyApp TITLE %TASK% start javaw.exe -cp .;Server.jar;Util.jar com.manage.Program %1 > log.log 2>&1 taskkill /T /FI "WINDOWTITLE eq %TASK%" So, the above works, and actually kills the cmd window that spawns my Swing app, but it doesn't log anything to the log file,

LOG4J Multiple Loggers in same class

与世无争的帅哥 提交于 2019-12-05 02:07:47
问题 I have a java project that has a log4j logging. It uses a rolling file appender and multiple loggers to log to a file. I want to add a DBappender and have a seperate logger that only writes to this appender, with none of the other loggers sending messages to it. I need, say one class to have two loggers, one writing to the fileAppender and one writing to the dbAppender. Is this possible, if so what is the configuration for it? Thanks 回答1: It's possible to use two Logger s in one class. First

how to create MyLogger?

隐身守侯 提交于 2019-12-05 01:59:21
I use log4j for logging. And I would like to modify methods: warn(..), error(..). I would like to modify message in this methods. So, is there any way, how to create my own logger? public class MyLogger extends Logger { protected MyLogger(String name) { super(name); } @Override public void error(Object message) { message = "test - " + message; super.error(message); } } And in class call: private static final Logger logger = MyLogger.getLogger(TestClass.class); logger.error("error message"); But it, do not work. Could you help me? Thanks. Tomasz Nurkiewicz Your problem is that: MyLogger

How to debug large server side distributed Java application

只谈情不闲聊 提交于 2019-12-05 01:57:23
问题 Here is my problem: I am trying to debug Apache Cassandra and understand the flow of the app. I.e. when a request is sent by the client, say put(), what methods are called and how the system is working internally. So, here is what I am thinking: Write a main method in the cassandra code which calls the point of entry put() method, put breakpoints in eclipse etc etc OR Don't write a main method, simply use regular client (which accesses server via TCP) and "debug" (by reading the log files and

Using log4j2, how to log key value pairs

烈酒焚心 提交于 2019-12-05 01:56:59
问题 I need to create logs with key value pairs as below. Is there any support in PatternLayout to do this for the static fields in a thread like log_level, class_name, event_id etc with the log4j2.xml. Sample log: 2014-06-18 11:57:46,719 log_level="INFO" class_name="com.abc.dgl.App:main(158)" name="Application start event" event_id="b88f7ea0-4cb1-438f-a728-ac7c2bdac578" app="Test App" severity="info" action="loaded sfor file processing" desc="props was read and loaded" result="success" reason=

how can I disable output to log4j.rootLogger?

亡梦爱人 提交于 2019-12-05 01:51:54
I want to disable the output to the console when logging to file. See config-file below: log4j.rootLogger=info,stdout log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L --- %m%n log4j.category.FileLog=info,R log4j.appender.R=org.apache.log4j.DailyRollingFileAppender log4j.appender.R.File=E:\\temp\\FileLog log4j.appender.R.Append = true log4j.appender.R.DatePattern='.'yyyy-MM-dd'.log' log4j.appender.R.layout=org.apache

Zookeeper 运维实践手册

痴心易碎 提交于 2019-12-05 01:48:46
Zookeeper是一个高可用的分布式数据管理与协调框架,该框架能很好地保证分布式环境中数据一致性。一般用来实现服务发现(类似DNS),配置管理,分布式锁,leader选举等。 一、生产环境中Zookeeper安装部署规范 生产环境建议zookeeper至少为三台集群,统一安装配置,版本号为近期新版本,比如版本为3.4.8 部署路径:/opt/业务模块名/zookeeper 配置文件:/opt/业务模块名/zookeeper/conf/zoo.cfg 存储快照文件snapshot的目录:/opt/业务模块名/zookeeper/data 事务日志输出目录:/var/log/业务模块名/zookeeper 运行日志输出目录:/var/log/业务模块名/zookeeper Zookeeper所有端口需要提前开通防火墙入站规则 对外服务端口:默认2181,可自定义 通信端口:2888,可自定义 选举端口:3888,可自定义 autoperge默认关闭,建议自行编写脚本在业务低谷期清理快照和事务日志 查询状态:sh /opt/业务模块名/zookeeper/zkServer.sh status 启动服务:sh /opt/业务模块名/zookeeper/zkServer.sh start 停止服务:sh /opt/业务模块名/zookeeper/zkServer.sh stop

log4j配置信息

眉间皱痕 提交于 2019-12-05 01:48:34
基本配置文件log4j.properties 1 log4j.rootLogger=debug, stdout, R 2 3 log4j.appender.stdout=org.apache.log4j.ConsoleAppender 4 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout 5 6 # Pattern to output the caller's file name and line number. 7 log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n 8 9 log4j.appender.R=org.apache.log4j.RollingFileAppender 10 log4j.appender.R.File=example.log 11 12 log4j.appender.R.MaxFileSize=100KB 13 # Keep one backup file 14 log4j.appender.R.MaxBackupIndex=5 15 16 log4j.appender.R.layout=org.apache.log4j.PatternLayout 17 log4j.appender.R

Java日志框架SLF4J和log4j以及logback的联系和区别

萝らか妹 提交于 2019-12-05 01:48:00
https://www.cnblogs.com/hanszhao/p/9754419.html 1.SLF4J(Simple logging Facade for Java) 意思为简单日志门面,它是把不同的日志系统的实现进行了具体的抽象化,只提供了统一的日志使用接口,使用时只需要按照其提供的接口方法进行调用即可,由于它只是一个接口,并不是一个具体的可以直接单独使用的日志框架,所以最终日志的格式、记录级别、输出方式等都要通过接口绑定的具体的日志系统来实现,这些具体的日志系统就有log4j,logback,java.util.logging等,它们才实现了具体的日志系统的功能。 如何使用SLF4J? 既然SLF4J只是一个接口,那么实际使用时必须要结合具体的日志系统来使用,我们首先来看SLF4J和各个具体的日志系统进行绑定时的框架原理图: 其实slf4j原理很简单,他只提供一个核心slf4j api(就是slf4j-api.jar包),这个包只有日志的接口,并没有实现,所以如果要使用就得再给它提供一个实现了些接口的日志包,比 如:log4j,common logging,jdk log日志实现包等,但是这些日志实现又不能通过接口直接调用,实现上他们根本就和slf4j-api不一致,因此slf4j又增加了一层来转换各日志实现包的使 用,当然slf4j-simple除外。其结构如下: