mybatis3.2打印不出SQL语句

Question

Spring3 struts2 mybatis3

JAR包：

[img]http://dl.iteye.com/upload/attachment/0083/3314/7a4ee1cd-c6be-37d5-9796-749f6d549049.png[/img]

[img]http://dl.iteye.com/upload/attachment/0083/3316/d0244429-f890-3f9d-b8f1-89b43063f434.png[/img]

Log4J配置：

[code="java"]
log4j.rootLogger=info, stdout, R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n

log4j.appender.R=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R.File=../logs/service.log
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n

log4j.logger.com.ibatis = debug
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource = debug
log4j.logger.com.ibatis.common.jdbc.ScriptRunner = debug
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate = debug
log4j.logger.java.sql.Connection = debug
log4j.logger.java.sql.Statement = debug
log4j.logger.java.sql.PreparedStatement = debug,R
log4j.logger.java.sql.ResultSet =debug
[/code]
发现只有当 log4j.rootLogger=debug, stdout, R 时才打印SQL语句和结果出来。如果是info就不打印了。找了很久度娘和谷哥，不知道怎么回事。。

Answer 1

我把mybatis3.2的源码下载之后，把里面PooledDataSource类的log输出部分，换成log.warn之后，重新打jar包，放到项目中，日志级别改为info，如：
[code="java"]
log4j.rootLogger=info, stdout, R

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n

log4j.appender.R=org.apache.log4j.DailyRollingFileAppender
log4j.appender.R.File=../logs/service.log
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=[service] %d - %c -%-4r [%t] %-5p %c %x - %m%n

log4j.logger.com.ibatis = debug
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource = debug
log4j.logger.com.ibatis.common.jdbc.ScriptRunner = debug
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate = debug
log4j.logger.java.sql.Connection = debug
log4j.logger.java.sql.Statement = debug
log4j.logger.java.sql.PreparedStatement = debug
log4j.logger.java.sql.ResultSet =debug
[/code]

此时，info级别能够输出warn级别的日志，我的日志显示如下：
[code="java"]
[service] 2013-04-19 10:30:57,982 - org.apache.ibatis.datasource.pooled.PooledDataSource -0 [main] WARN org.apache.ibatis.datasource.pooled.PooledDataSource - PooledDataSource forcefully closed/removed all connections.
[service] 2013-04-19 10:30:57,985 - org.apache.ibatis.datasource.pooled.PooledDataSource -3 [main] WARN org.apache.ibatis.datasource.pooled.PooledDataSource - PooledDataSource forcefully closed/removed all connections.
[service] 2013-04-19 10:30:57,986 - org.apache.ibatis.datasource.pooled.PooledDataSource -4 [main] WARN org.apache.ibatis.datasource.pooled.PooledDataSource - PooledDataSource forcefully closed/removed all connections.
[service] 2013-04-19 10:30:57,996 - org.apache.ibatis.datasource.pooled.PooledDataSource -14 [main] WARN org.apache.ibatis.datasource.pooled.PooledDataSource - PooledDataSource forcefully closed/removed all connections.
[service] 2013-04-19 10:30:59,025 - org.apache.ibatis.datasource.pooled.PooledDataSource -1043 [main] WARN org.apache.ibatis.datasource.pooled.PooledDataSource - Created connection 22323092.
[service] 2013-04-19 10:30:59,076 - org.apache.ibatis.datasource.pooled.PooledDataSource -1094 [main] WARN org.apache.ibatis.datasource.pooled.PooledDataSource - Returned connection 22323092 to pool.
[/code]

很明显，这是显示warn的日志信息了。说明mybatis3只是打印了debug级别的日志。