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https://issues.apache.org/jira/browse/LOG4J2-2666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16897487#comment-16897487
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Guilherme Giani commented on LOG4J2-2666:
-----------------------------------------

Hi Ralph,

That helped. Thank you. Perhaps now I'm getting the following error:

2019-07-31 17:04:53,373 main ERROR No database name provided: databaseName
2019-07-31 17:04:53,391 main ERROR Could not create plugin of type class 
org.apache.logging.log4j.mongodb3.MongoDbProvider for element MongoDb3 
org.apache.logging.log4j.core.config.ConfigurationException: Arguments given 
for element MongoDb3 are invalid: field 'databaseName' has invalid value 'null'
{code:java}
<Appenders>
 <NoSql name="databaseAppender">
  <MongoDb3 collectionName="applicationLog"
    factoryClassName="configuration.MongoConnectionFactory"
    factoryMethodName="getClient" />
 </NoSql>
 <Console name="console" target="SYSTEM_OUT">
  <PatternLayout
    pattern="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n" />
 </Console>
</Appenders>
{code}
 

Shouldn't databaseName be skipped when using factoryClass?

 

> ERROR NoSql contains an invalid element or attribute "MongoDb3"
> ---------------------------------------------------------------
>
>                 Key: LOG4J2-2666
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-2666
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 2.12.0
>         Environment: Java 12.
>            Reporter: Guilherme Giani
>            Priority: Major
>
> I'm trying to setup log4j2 with mongo db in a very simple java project, but 
> log4j keeps throwing me the following error:
>  
> 2019-07-31 14:38:07,064 main ERROR NoSql contains an invalid element or 
> attribute "MongoDb3"
> 2019-07-31 14:38:07,072 main ERROR NoSQL provider not specified for appender 
> [databaseAppender].
> 2019-07-31 14:38:07,075 main ERROR Null object returned for NoSql in 
> Appenders.
> 2019-07-31 14:38:07,087 main ERROR Unable to locate appender 
> "databaseAppender" for logger config "root"
>  
>  This is my current log4j2.xml:
>  
> <?xml version="1.0" encoding="UTF-8"?>
> <Configuration status="error">
>  <Appenders>
>  <NoSql name="databaseAppender">
>  <MongoDb3 collectionName="applicationLog" 
> factoryClassName="org.example.db.ConnectionFactory"
>  factoryMethodName="getNewMongoClient" />
>  </NoSql>
>  </Appenders>
>  <Loggers>
>  <Root level="warn">
>  <AppenderRef ref="databaseAppender"/>
>  </Root>
>  </Loggers>
> </Configuration>
>  
> And these are the dependencies I have:
>  
> <dependency>
>  <groupId>org.apache.logging.log4j</groupId>
>  <artifactId>log4j-api</artifactId>
>  <version>2.12.0</version>
>  </dependency>
> <dependency>
>  <groupId>org.apache.logging.log4j</groupId>
>  <artifactId>log4j-core</artifactId>
>  <version>2.12.0</version>
>  </dependency>
> <dependency>
>  <groupId>org.mongodb</groupId>
>  <artifactId>mongo-java-driver</artifactId>
>  <version>2.12.3</version>
>  </dependency>



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