在pom.xml文件中添加下面的依赖（二选一即可）

方法一：添加依赖

参考网站：

<!-- https://mvnrepository.com/artifact/log4j/log4j -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.6.6</version>
            <scope>test</scope>
        </dependency>

方法二：添加依赖

参考网站：

<dependency>
    <groupId> org.apache.cassandra</groupId>
    <artifactId>cassandra-all</artifactId>
    <version>0.8.1</version>

    <exclusions>
      <exclusion> 
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
      </exclusion>
      <exclusion> 
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
      </exclusion>
    </exclusions> 
</dependency>