HDFS的Java客户端操作代码(查看HDFS下的文件是否存在)

1 packageHdfs;
2 
3 importjava.io.IOException;
4 importjava.net.URI;
5 importorg.apache.hadoop.conf.Configuration;
6 importorg.apache.hadoop.fs.FileSystem;
7 importorg.apache.hadoop.fs.Path;
8 
9 public classCheckFileExist {
10     public static voidmain(String[] args) {
11         String uri = "hdfs://neusoft-master:9000/user/root/test1";
12         Configuration conf = newConfiguration();
13         try{
14             FileSystem fs =FileSystem.get(URI.create(uri), conf);
15             Path delPath = newPath(uri);
16             boolean isExists =fs.exists(delPath);
17 System.out.println(isExists);
18         } catch(IOException e) {
19 e.printStackTrace();
20 }
21 }
22 
23 }