hdfsfapi编程实例判断hdfs 是否存在某个文件

xception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
at hadoop.common@3.1.3/org.apache.hadoop.conf.Configuration.(Configuration.java:228)
at Dblab/chapter3.Chapter3.main(Chapter3.java:12)博主您好，请帮我看看这是什么问题，