log4j2

问题 TL;DR If I'm using JsonLayout with a nested KeyValuePair in my log4j2.xml config the resulting log messages are empty. Any ideas why? Long Story I'm using Tomcat 8.5.43 with the following logging related JARs: jackson-annotations-2.9.7.jar jackson-core-2.9.7.jar jackson-databind-2.9.7.jar slf4j-api-1.7.25.jar jcl-over-slf4j-1.7.25.jar log4j-api-2.12.0.jar log4j-core-2.12.0.jar log4j-jul-2.12.0.jar log4j-slf4j-impl-2.12.0.jar tomcat-extras-juli-8.5.2.jar (as tomcat-juli.jar in /bin) tomcat

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

问题 I've found several examples of programmatic configuration, but none of those mention asynchronous logging. How can I configure log4j 2 to make all loggers asynchronous? Just to be clear: I can't make it by setting the System property. What I need is something like this: How to configure log4j 2.x purely programmatically? 回答1: If you can't use system property and log4j2.component.properties file. You can try the ConfigurationFactory.setConfigurationFactory method. Here's a brief example:

问题 I've found several examples of programmatic configuration, but none of those mention asynchronous logging. How can I configure log4j 2 to make all loggers asynchronous? Just to be clear: I can't make it by setting the System property. What I need is something like this: How to configure log4j 2.x purely programmatically? 回答1: If you can't use system property and log4j2.component.properties file. You can try the ConfigurationFactory.setConfigurationFactory method. Here's a brief example:

问题 I want to generate half-daily log files through log4j2 configuration. I have given : <RollingFile name="fileAppender" filename ="${logName} append="true" FilePattern="${logName}. %d{yyyy-MM-dd-a}"> And also defined: <Policies> <TimeBasedTriggeringPolicy interval="1" Module="true"/> But i am getting only AM log in this way though i want it to be something : a.log.2016-03-23-AM b.log.2016-03-23-PM Can somebody help me out in the same? 回答1: You can use the CronTriggeringPolicy for this. I

问题 What I'm trying to do is pretty straight forward: <?xml version="1.0" encoding="UTF-8"?> <Configuration> <Appenders> <Console name="Console"> <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/> </Console> <File name = "hibernateFile" fileName = "${artifactId}/logs/hibernate.log"> <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/> </File> <File name = "springFile" fileName = "${artifactId}/logs/spring.log"> <PatternLayout pattern="%d{HH:mm

问题 I have configured Log4j2 with the following configuration, but TimeBasedTriggeringPolicy is not working, I am getting new day logs in older day's logs, can you please help. It is rolling over properly with size and it is also creating any number of files since I have specified "nomax" attribute for DefaultRollOverStrategy, only TimeBasedTriggeringPolicy is not working. It writes logs of a day in the previous day's log file. It does create the new log file with the latest date, but some logs

问题 I have a Spring Boot application and I want to use log4j with this application. Problem is I have a JDBC appender like(log4j2.xml); <JDBC name="customDBAppender" tableName="mytable"> <ConnectionFactory class="com.example.logger.ConnectionFactory" method="getConnection" /> .... </JDBC> I got a static getConnection method and I need to reach my database properties(username, password) in this method. I think log4j uses reflection to create connection with this method(and even before Spring

问题 I have a Spring Boot application and I want to use log4j with this application. Problem is I have a JDBC appender like(log4j2.xml); <JDBC name="customDBAppender" tableName="mytable"> <ConnectionFactory class="com.example.logger.ConnectionFactory" method="getConnection" /> .... </JDBC> I got a static getConnection method and I need to reach my database properties(username, password) in this method. I think log4j uses reflection to create connection with this method(and even before Spring

问题 I have a java application and I am using log4j2. I want to only log the log message without logging things like className, log level, timestamp etc. I do see some suggestions regarding custom appender etc. But isn't there a simpler way to achieve this by just modifying the default configuration ? Example: log.info(" Hi This is a log message"); Desired Log statement Hi This is a log message 回答1: You have to change config file log4j.xml The element need to be change in that file is pattern : if