log4j

Idea 插件安装 安装插件的目的其实是为了解决@Data等注解不报错，步骤如下： File>Settings>Plugins搜索并安装Lombok即可。 其实这里最主要的问题是网络问题，无法搜到任何的插件,我这边的解决办法就是科学冲浪。 Pom.xml依赖 <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> 注解介绍 @Data @Setter @Getter @Log4j @AllArgsConstructor @NoArgsConstructor @EqualsAndHashCode @NonNull @Cleanup @ToString @RequiredArgsConstructor @Value @SneakyThrows @Synchronized 这里我重点介绍@Data以及@Log4j @Data:注解在 类 上；提供类所有属性的 get 和 set 方法，此外还提供了equals、canEqual、hashCode、toString 方法。 @Log4j:为类提供一个 属性名为 log 的 log4j 日志对象，提供默认构造方法 @Slf4j:同上 @Setter：注解在属性上；为属性提供 setting 方法

摘自： https://www.cnblogs.com/mzq123/p/11920395.html SpringBoot系列之切换log4j日志框架 SpringBoot系列之使用切换log4j日志框架 ok，在pom文件右键->Diagrams->show Dependencies....，如图，找到spring-boot-starter-logging，可以看到SpringBoot的日志实现默认依赖与logback，ok，如果你对这些知识不是很理解的，建议先看我Springboot专栏的日志系列博客： https://smilenicky.blog.csdn.net/category_9195353.html 本博客要实现的是切换默认日志框架为log4j，当然是不建议这样做的，因为log4j有性能问题，所以其作者才开发了logback，不过作为学习的话，还是可以学一下怎么切换Springboot默认的日志框架 先去 slf4j官网 拿一张图：图示，切换日志框架，为了避免冲突，一般都是先排除日志框架的实现jar，然后再将之前博客提到的偷梁换柱jar，比如log4j-to-slf4j.jar等等先排除，然后再引入对应的日志实现jar，如图所示的slf4j-log4j12.jar，因为本博客并非入门教程，所以学习之前请先参考我之前Springboot日志方面的博客，再来学习 ok

I have a Java Webapplication running on Tomcat, executing Shell scripts at runtime in which many "echo" commands are executed. My problem is that I'd like all my logs to appear in a log4j RollingFileAppender, ie: Java Log4j logs (which is easy to do) Shell echo commands logs as well (which is the tricky part to me) The Shell scripts are run via java.lang.Process class. So far, I've managed to output the inputStream and errorStream of the process to System.out thanks to the log4j-provided StreamUtils.copy() method. But then this is fine to get some ConsoleAppender output, but not a

Closed. This question is off-topic . It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I've been using Java for my "home projects" for a while and now there's a need to make some of my projects available through the repositories like github or Google Code. As long as I'm the only developer for the project and as long as I always work in Eclipse, there are absolutely no questions about building and running it. Everything just work fine. The question is basically, what do I do if someone asks me to

I had this warning in log when my application was starting log4j:WARN Unrecognized element rollingPolicy tried to Google for answers, but adding apache-log4j-extras-1.1.jar didn't helped me. I'm using slf4j-log4j12 1.7.2 with log4j 1.2.17 . Instead of rollingPolicy I used DailyRollingFileAppender and no extras jar is needed. <appender name="rollingLog" class="org.apache.log4j.DailyRollingFileAppender"> <param name="File" value="${catalina.home}/logs/rolling.log" /> <param name="append" value="true" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d

When I run the following simple log4J example, i get an error: import org.apache.logging.log4j.core.*; import java.io.*; import java.sql.SQLException; import java.util.*; public class log4jExample{ /* Get actual class name to be printed on */ static Logger log = Logger.getLogger( log4jExample.class.getName()); public static void main(String[] args) throws IOException,SQLException{ log.debug("Hello this is an debug message"); log.info("Hello this is an info message"); } } and the error reads: Error: package org.apache.logging.log4j.core does not exist Error: cannot find symbol symbol: class

logback配置 参考 # logback官网 http://logback.qos.ch/manual/index.html # logback新认识(一)：logback主要组件appender、rollingPolicy和triggeringPolicy的使用和理解 http://blog.itcrud.com/blogs/2018/12/logback-first logback配置方式 logback可以编程配置，也可以通过xml或groovy配置文件配置。 classpath下找 logback-test.xml 没找到，classpath下找 logback.groovy 没找到，classpath下找 logback.xml 没找到，classpath下找 META-INF\services\ch.qos.logback.classic.spi.Configurator 文件获取 ch.qos.logback.classic.spi.Configurator 接口的实现类信息。 没找到，使用默认配置类， ch.qos.logback.classic.BasicConfigurator 实例 日志文件滚动 <appender name="pullLog" class="ch.qos.logback.core.rolling.RollingFileAppender">

Could you recommend simple tutorial about using log4j in distributed system, especially about SocketAppender? I tried to find some basic examples, but I failed. Brian Agnew This one looks simple and straightforward. From the article: Example server startup with SimpleSocketServer (from the command line): > java -jar log4j.jar org.apache.log4j.net.SimpleSocketServer 4712 log4j-server.properties Now all you have to do is specify your appender on the client. Example appender: > log4j.appender.SERVER=org.apache.log4j.net.SocketAppender > log4j.appender.SERVER.Port=4712 > log4j.appender.SERVER

I'm trying to configure a log4net SmtpAppender so that I only get an e-mail if a certain log level is hit, but with the last 10 lines from all levels included. This is my config: <appender name="EmailAppender" type="SmtpSubjectLayoutAppender"> <evaluator type="log4net.Core.LevelEvaluator"> <threshold value="WARN"/> </evaluator> <bufferSize value="10" /> <lossy value="false" /> ... </appender> I'm exercising it with this code: for (var i = 1; i <= 30; i++) { logger.Info("This is just a test message " + i); } logger.Error("Error message"); The problem is that I end up getting 3 e-mails, 2 with