访问HDFS报错：org.apache.hadoop.secur

https://www.cnblogs.com/413xiaol/p/9949936.html

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.fs.FileSystem;

import org.apache.hadoop.fs.Path;

import java.util.Properties;

public class TestHDFS {

    public static void main(String[] args) throws Exception{

        Properties properties = System.getProperties();

        properties.setProperty("HADOOP_USER_NAME", "root");

        Configuration conf = new Configuration();

        conf.set("fs.defaultFS", "hdfs://192.168.0.104:9000");

        FileSystem fs = FileSystem.get(conf);

        //存在的情况下会覆盖之前的目录

        boolean success = fs.mkdirs(new Path("/xiaol"));

        System.out.println(success);

    }

}