maven 项目没法 打印日志 问题解决

问题：spring mvc mybatis 框架，server启动显示日志如下

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further detail

然后项目中没法显示 任何sql日志

解决：项目中加入sl4j pom依赖

原因：Mybatis默认使用slf4j

我的配置如下：pom
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
log4j.properties
log4j.rootLogger=info,stdout, console

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.SimpleLayout

#ibatis logger config\u663E\u793ASQL\u8BED\u53E5\u90E8\u5206
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=debug,stdout
log4j.logger.java.sql.Connection=debug
log4j.logger.java.sql.Statement=debug
log4j.logger.java.sql.PreparedStatement=debug,stdout
---------------------
参考：http://my.oschina.net/u/140421/blog/176783

必须加上依赖

01 <dependency>
02 <groupId>org.slf4j</groupId>
03 <artifactId>slf4j-log4j12</artifactId>
04 <version>1.7.5</version>
05 </dependency>
06
07 <dependency>
08 <groupId>org.slf4j</groupId>
09 <artifactId>slf4j-api</artifactId>
10 <version>1.7.5</version>
11 </dependency>

否则是怎么配置log4j都是无法打印mybatis的sql到日志


log4j配置
1 # Direct log messages to console
2 log4j.appender.console=org.apache.log4j.ConsoleAppender
3 log4j.appender.console.Target=System.out
4 log4j.appender.console.layout=org.apache.log4j.PatternLayout
5 log4j.appender.console.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n
6
7 # Root logger option
8 log4j.rootLogger=debug,console