Appenders

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引入Druid数据源时，log4j:WARN No appenders could be found for logger，问题解决

最近创建引入Druid数据源时，log4j报错，总结为log4j与druid存在版本不兼容和未配置log4j问题解决办法： 1、先将druid版本降低一个版本1.2.11改为1.2.10 2、将log4j.properties文件配置在res的根目录下粘贴如下代码到配置文件中： log4j.rootLogger=DEBUG, stdout log4j.append

日志报错 log4j:WARN No appenders could be found for logge

报错信息： log4j:WARN No appenders could be found for logger (org.example.MetastoreTestConcurrent). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. 解决：配置文件log4j.p

Log4j2的Appenders配置详解(1)，Java经典面试

文章目录 ConsoleAppender AsyncAppender FileAppender RollingFileAppender RandomAccessFileAppender RollingRandomAccessFileAppender []( )ConsoleAppender 控制台输出源是将日志打印到控制台上，开发的时候一般都会配置，以便调试。 name：指定Appender的名

log4js基本使用

const log4js = require("log4js"); log4js.configure({ appenders: { cheese: { type: "file", filename: "cheese.log" } }, categories: { default: { appenders: ["cheese"], level: "info" } } }); const logge

log4j:WARN No appenders could be found for logger 报错

原因：缺少文件，在resources文件夹中添加log4j.properties文件（名字必须相同）写入以下代码： # Configure logging for testing: optionally with log file log4j.rootLogger=WARN, stdout # log4j.rootLogger=WARN, stdout, logfile log4j.appender.stdout=org.apache.log4j.Consol

No appenders could be found for logger [IntelliJ IDEA]

网上看了很多说在source文件夹下加一个log4j.properties 其实准确说应该在resources目录下加在IDEA中，可以加一个文件夹放log4j.properties，并在这个文件夹右键-选择Mark Directory as - Resoures Root log4j.rootLogger=INFO, Console, DEBUG log4j.appender.Console=org.apa

log4j:WARN No appenders could be found for logger

问题场景在项目中使用Log4j时，出现以下情况： log4j:WARN No appenders could be found for logger (com.frank.Log4jDemo). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more inf

No appenders could be found for logger

在运行代码时，出现下面的错误， log4j:WARN No appenders could be found for logger (genericTest.GenericTest). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. 解决方法是在p