<!-- log4j日志文件管理包版本 -->  
  <slf4j.version>1.7.7</slf4j.version>  
 <log4j.version>1.2.17</log4j.version>  
</properties>  
<dependencies>  
  <!-- 日志文件管理包 -->  
  <dependency>  
 <groupId>log4j</groupId>  
 <artifactId>log4j</artifactId>  
 <version>${log4j.version}</version>  
 </dependency> <dependency> <groupId>org.slf4j</groupId>  
 <artifactId>slf4j-api</artifactId>  
 <version>${slf4j.version}</version>  
 </dependency> <dependency> <groupId>org.slf4j</groupId>  
 <artifactId>slf4j-log4j12</artifactId>  
 <version>${slf4j.version}</version>  
 </dependency>

Reimport 一下项目试试

${slf4j.version}你配置了吗