Log4j和logback是有衝突的，這樣會導致Log4j的日誌級別降低到DEBUG級別。maven依賴中把logback的隱式依賴給去掉。fastdfs依賴於logback

去除依賴的方法：

<dependency>
<groupId>com.github.tobato</groupId>
<artifactId>fastdfs-client</artifactId>
<version>1.25.2-RELEASE</version>
<exclusions>
<exclusion>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</exclusion>
<exclusion>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
</exclusion>
</exclusions>
</dependency>