log4j2

Commons-logging with log4j2

由 戏子无情 提交于 2019-12-22 09:15:38
问题 I am using log4j 1.2 with commons-logging. Now I am trying to upgrade it to log4j2. But how to use log4j2 with commons-logging to initialize log4j2. I tried to initialize commons logging in the below way. Its working fine **Statement1**: static Log log = new Log4JLogger(Logger.getLogger(Example.class)); **Statement2**:log.debug("debug statement"); Here I am using object of type org.apache.commons.logging.Log initialized with object of org.apache.log4j.Logger .( org.apache.log4j.Logger is the

Log4j2 Syslog appender(TCP protocol) sending exception stacktrace in multiple lines and showing wrong log levels

由 一笑奈何 提交于 2019-12-22 09:15:02
问题 I am using log4j2 and syslog appender. I am using TCP as protocol and Kiwi syslog server. While sending the error messages, the exception stacktrace is being sent over TCP in multiple lines, each line in one one packet. The first line of the stacktrace is shwoing correct log level in Kiwi syslog server, but the subsequent of the same stacktrace is shwoing wrong log level and facility. This is not happening in case of UDP protocol. 01-22-2015 10:25:40 Local0.Error 10.74.224.251 1 2015-01-23T00

How to use multiple configuration files for log4j2

由 一个人想着一个人 提交于 2019-12-22 08:14:11
问题 I am writing Java code that tests a Java library. The library includes its own log4j2 configuration as part of the distribution. I would like to use log4j2 in my test code without modifying the library's configuration. Is there a way to have a separate log4j2 configuration for my test code? This is all running as command-line Java, no servers or web involvement at all. EDIT to try to be more clear: What I want is to be able to configure loggers, appenders, etc for the test code to use , and

Enable debug logging for Log4J2 + Apache HttpClient

由 最后都变了- 提交于 2019-12-22 04:35:53
问题 im trying to activate the debug logging for my Apache HttpClient but cant make it work (getting no logging output at all which is HttpClient related). This is my log4j2 configuration im using at the moment: <?xml version="1.0" encoding="UTF-8"?> <configuration status="OFF"> <appenders> <Console name="console" target="SYSTEM_OUT"> <PatternLayout pattern="%d{HH:mm:ss} [%t] %-5level %logger{36} - %msg%n" /> </Console> <RollingFile name="RollingRandomAccessFile" fileName="logs/test.log"

正在把日志转换成Log4j2

由 醉酒当歌 提交于 2019-12-21 17:58:27
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 2017年5月6日，近来又发现一篇关于log4j2的使用，非常详细 Log4j2 简明教程 去年转了一篇关于 log4j2的使用 ，那时只是简单的转文章，并没有使用。现在在整理以往的资料，打算全部使用log4j2，以下是过程。 1、pom.xml添加 <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-core</artifactId> <version>2.5</version> </dependency> 2、log4j2配置文件，在resources中添加Log4j2.xml文件，内容如下，详细可参考 Log4j2使用 <?xml version="1.0" encoding="UTF-8"?> <!-- 日志级别 trace： 是追踪，就是程序推进以下，你就可以写个trace输出，所以trace应该会特别多，不过没关系，我们可以设置最低日志级别不让他输出。 debug： 调试么，我一般就只用这个作为最低级别，trace压根不用。是在没办法就用eclipse或者idea的debug功能就好了么。 info： 输出一下你感兴趣的或者重要的信息，这个用的最多了。 warn： 有些信息不是错误信息

Log4j2's FailoverAppender Error: appender Failover has no parameter that matches element Failovers

由 拈花ヽ惹草 提交于 2019-12-21 13:29:09
问题 When I compile my spring 3.2.9 web application using log4j 2.1, this error appears in the console: 2015-02-02 12:08:25,213 ERROR appender Failover has no parameter that matches element Failovers What I understand is that the element "Failovers" does not exist inside the element "Failover", right? Why would this happen? I don't see whats wrong since I have the same configuration as the log4j2 manual. I have this configuration in my log4j2.xml: <?xml version="1.0" encoding="UTF-8"?>

PropertyConfigurator in log4j2

由 隐身守侯 提交于 2019-12-21 12:28:53
问题 I'm migrating log4j 1.2.8 to log4j 2.3. Everything works fine, beside that I'm not finding any any alternative for the PropertyConfigurator. Is there another class to take care of what the PropertyConfigurator did before? 回答1: Maybe this can help you? How do I reconfigure log4j2 in code with a specific configuration file? See the below example. Be aware that this LoggerContext class is not part of the public API so your code may break with any minor release. // import org.apache.logging.log4j

Apache Storm : Metrics log file is empty

由 天涯浪子 提交于 2019-12-21 06:45:45
问题 I am trying to follow the example here https://www.endgame.com/blog/storm-metrics-how here is my storm.yaml storm.zookeeper.servers: - localhost supervisor.slots.ports: - 6700 - 6701 - 6702 - 6703 - 6704 nimbus.host: localhost ui.port: 8080 ui.host: localhost storm.log.dir: /path/to/storm/logdir topology.max.spout.pending: 5000 I tried running the topology in local and cluster mode. the metrics.log file is created at the location /path/to/storm/logdir but the file is empty! am i missing some

JUL Adapter not working for Jersey

由 ▼魔方 西西 提交于 2019-12-21 04:22:05
问题 I am trying to use JUL Adapter to delegate Java Util Logging to Log4j2. More precisely, any third-party library that use JUL to generate logs, should be delegated to Log4j2. As a simple exercise, I created a standalone application that uses a library (I created this library for testing purposes, it generates logs using JUL) to test the JUL Adapter . When I change the log manager as described here I can see the effects. And it works fine. Hers's the code: import org.apache.logging.log4j

log4j2 Setting printObject to true in custom Appender

由 妖精的绣舞 提交于 2019-12-20 07:37:11
问题 HERE It says that - "Appenders should specify printObject as "true" if the toString method renders the values of the attributes passed to the Appender." Can someone please explain this? Does this mean that if printObject=true, we should override toString() method? And what if we do not override toString() ? 回答1: During Log4j 2 initialization, all plugins in the configuration are processed and stored in Node objects. The Node.toString() method is implemented such that if the original Plugin's
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