log4Mongo配置
最近发现了一个开源的项目log4mongo。可以把log4j的日志存放到mongoDB中，在mongoDB的可以更好的查询日志。
下面是使用log4Mongo的具体配置：
1.需要引入的jar
mongodb的java驱动，
log4j(注意需要1.2.16的版本)
log4mongo
maven配置如下：
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongo-java-driver</artifactId>
<version>2.7.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
<groupId>org.log4mongo</groupId>
<artifactId>log4mongo-java</artifactId>
<version>0.7.0</version>
</dependency>
2.log4j.properties配置：
log4j.rootCategory=INFO,MongoDBError,MongoDBWarn
log4j.logger.com=INFO
#---------------------------------------
# log4Mongo warn
#---------------------------------------
log4j.appender.MongoDBWarn=org.log4mongo.MongoDbAppender
log4j.appender.MongoDBWarn.Threshold=WARN
#log4j.appender.MongoDBWarn=org.log4mongo.MongoDbPatternLayoutAppender
log4j.appender.MongoDBWarn.hostname=192.168.0.3
log4j.appender.MongoDBWarn.port=6666
log4j.appender.MongoDBWarn.databaseName=etlClientMontlog
log4j.appender.MongoDBWarn.collectionName=warnlog
# The layout property is required only if the MongoDbPatternLayoutAppender appender is used.
# If a custom PatternParser and custom PatternConverters are required to log additional data,
# the specified layout class must extend MongoDbPatternLayout. A ConversionPattern property
# should also be specified.
log4j.appender.MongoDBError.layout=org.log4mongo.MongoDbPatternLayout
#---------------------------------------
# log4Mongo error
#---------------------------------------
log4j.appender.MongoDBError=org.log4mongo.MongoDbAppender
log4j.appender.MongoDBError.Threshold=ERROR
#log4j.appender.MongoDBError=org.log4mongo.MongoDbPatternLayoutAppender
log4j.appender.MongoDBError.hostname=192.168.0.3
log4j.appender.MongoDBError.port=6666
log4j.appender.MongoDBError.databaseName=etlClientMontlog
log4j.appender.MongoDBError.collectionName=errorlog
# The layout property is required only if the MongoDbPatternLayoutAppender appender is used.
# If a custom PatternParser and custom PatternConverters are required to log additional data,
# the specified layout class must extend MongoDbPatternLayout. A ConversionPattern property
# should also be specified.
log4j.appender.MongoDBError.layout=org.log4mongo.MongoDbPatternLayout
