log4j2输出到mongodb

摘要: log4j2输出到mongodb

以log4j2 v2.7版本为例，低版本可能不支持。

参见：
http://logging.apache.org/log4j/2.x/manual/appenders.html#NoSQLAppender https://logging.apache.org/log4j/2.x/runtime-dependencies.html https://logging.apache.org/log4j/2.x/log4j-nosql/index.html http://www.cnblogs.com/autfish/p/5557568.html
 

maven:

<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId> <!--必需 -->
<version>2.12.3</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.7</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.7</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-nosql</artifactId> <!-- 必需，否则报错 -->
<version>2.7</version>
</dependency>

log4j2.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="off" monitorInterval="30">
<Appenders>
<NoSql name="mongoAppender" bufferSize="10"> <!--建议bufferSize配置,减少频繁写操作。 -->
<MongoDb databaseName="sl0" collectionName="log4j2" server="127.0.0.1" port="27017"/>
</NoSql>
<Console name="STDOUT" target="SYSTEM_OUT">
<PatternLayout pattern="%m%n"/>
</Console>
</Appenders>
<Loggers>
<Logger name="mongologger" level="debug">
<appender-ref ref="mongoAppender"/>
</Logger>

<Logger name="org" level="debug">
<appender-ref ref="mongoAppender"/>
<appender-ref ref="STDOUT" />
</Logger>
<Root level="debug">
<appender-ref ref="STDOUT" />
</Root>
</Loggers>
</Configuration>

unit:

package org.sl;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.junit.Test;

public class Test2 {
//都会输出到mongo中，见log4j2.xml配置
static Logger clzlogger = LogManager.getLogger(Test2.class);
static Logger mongologger = LogManager.getLogger("mongologger");

@Test
public void t1(){
mongologger.info("mongologger");
clzlogger.info("clzlogger");
}
}