log4j

Log4j 1.2 multi-level filtering

由 懵懂的女人 提交于 2019-12-11 09:29:00
问题 BTW, this is log4j 1.2. My application needs to log every time we create an alert, and we want to do it at INFO level. Our root logger has priority level set to INFO. So far so good. We have added several appenders for specialized needs, including a stadard CONSOLE appender and a server.log appender (and others). I have configured the root logger with the console and server.log appenders. Also fine up to this point. <root> <priority value="INFO"/> <appender-ref ref="CONSOLE"/> <appender-ref

Flink入门（三）——环境与部署

由 邮差的信 提交于 2019-12-11 09:24:18
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> flink是一款开源的大数据流式处理框架，他可以同时批处理和流处理，具有容错性、高吞吐、低延迟等优势，本文简述flink在windows和linux中安装步骤，和示例程序的运行，包括本地调试环境，集群环境。另外介绍Flink的开发工程的构建。 首先要想运行Flink，我们需要下载并解压Flink的二进制包，下载地址如下： https://flink.apache.org/downloads.html 我们可以选择Flink与Scala结合版本，这里我们选择最新的1.9版本 Apache Flink 1.9.0 for Scala 2.12 进行下载。 下载成功后，在windows系统中可以通过Windows的bat文件或者Cygwin来运行Flink。 在linux系统中分为单机，集群和Hadoop等多种情况。 通过Windows的bat文件运行 首先启动cmd命令行窗口，进入flink文件夹，运行bin目录下的 start-cluster.bat 注意：运行flink需要java环境，请确保系统已经配置java环境变量。 $ cd flink $ cd bin $ start-cluster.bat Starting a local cluster with one JobManager process

apache-log4j-extras also declares `Appender` interface

由 倾然丶 夕夏残阳落幕 提交于 2019-12-11 08:45:03
问题 My classpath, as generated by Gradle, includes both apache-log4j-extras-1.2.17.jar , and log4j-1.2.17.jar . I believe these were both downloaded from Maven Central. In any case, in files I have in front of me, all the class and interface definitions from the log4j jar in the org.apache.log4j package are duplicated in the "extras" jar. When log4j is initialized, there's a class-loading conflict: java.lang.ClassCastException: org.apache.log4j.rolling.RollingFileAppender cannot be cast to org

Connecting Log4j to ipython notebook stderr in a java/python project using py4j

由 走远了吗. 提交于 2019-12-11 08:25:21
问题 I have a project that uses java, scala and Apache Spark to do distributed computations on genomic data. Using py4j and mimicking the PySpark model, we expose a python API that calls into the JVM. Our goal has been to bring this model into jupyter notebooks, which has been pretty easy so far, with one lingering problem: logging. The problem We (and Spark) use log4j to write log messages to a log file and stderr. This stderr is the stderr for the java process, so if I run two commands from the

Loading properties file from WEB-INF folder in a log4j appender

由 我的未来我决定 提交于 2019-12-11 08:24:23
问题 We're writing a custom log4j appender for our application. The appender should log its events to a database. Now the problem I'm having is setting up the database connection. Our jdbc settings are in a file called jdbc.properties which is located directly under the WEB-INF folder. I've tried accessing the properties file using the following code InputStream stream = Thread.currentThread().getContextClassLoader() .getResourceAsStream("jdbc.properties"); ... but stream results in being null.

Enhanced Throwable Renderer in log4j2

由 ぐ巨炮叔叔 提交于 2019-12-11 08:19:48
问题 Is there an equivalent of Enhanced Throwable Renderer class ( which was present in log4j1 ) in log4j2 ? I am migrating a library to log4j2 and I don't see this feature supported in log4j2. Any help is appreciated. 回答1: In log4j2, the PatternLayout has many options like %ex{option} , %rEx{option} or %xEx{option} that I suspect have the same functionality or more than Enhanced Throwable Renderer. 来源： https://stackoverflow.com/questions/29265634/enhanced-throwable-renderer-in-log4j2

Mule deployment error: log4j JMS Appender Invalid Parameter

由 馋奶兔 提交于 2019-12-11 08:09:07
问题 I'm deploying a mule application and receive this error. I'm using Mule 3.4.1-EE and activeMQ 5.8 JMSException: Could not create Transport. Reason: java.lang.IllegalArgumentException: Invalid connect parameters: wireFormat.maxInactivityDurationInitalDelay=30000 Occording to this the argument is correct: http://activemq.apache.org/configuring-wire-formats.html. If I take out the wireFormat option, it will throw an error about it need to be set. <appender name="jms" class="org.apache.log4j.net

log4j: how to get the last inserted log message?

由 China☆狼群 提交于 2019-12-11 07:44:52
问题 I wonder if there is way to retrieve the last inserted log to my log4j log file ? Also, I need it to be run while unit-testing on Spock. Thanks! 回答1: You can always write your own appender where log messages go through: Get live Log4J messages 来源： https://stackoverflow.com/questions/26533121/log4j-how-to-get-the-last-inserted-log-message

Can I make Log4J suppress logging specific messages for a time?

由 我的未来我决定 提交于 2019-12-11 07:28:28
问题 I thought this is a pretty basic requirement, although difficult to implement efficiently: At one codebase, we log quite a bit, depending on user behavior. For the sake of argument say every click on a button creates a log message with the name of the clicked button. Now, I don't care about each and every clicked button. I'm quite content having one message printed once every 5 minutes, regardless of the number of times the user clicked the button. I can do this pretty easily in user code:

can you explain step by step how to use log4j in ejb module in Jboss7.1?

由 让人想犯罪 __ 提交于 2019-12-11 07:28:15
问题 can you give me please a step by step procedure to follow, in order to make log4j work on an ejb module? the situation is this: i have my ejbmodule, which is using hibernate to perform some fetching tasks, and i want to log everything. I want to use log4j but i can not understand some steps of the others procedure described on the web like those from jboss. Can you please tell me what i should do, step by step? As far as i am: I have got my configuration file (and i don't know where to put it
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