将HDFS中指定文件的内容输出到终端。 

 1 import java.io.*;
 2 import org.apache.hadoop.conf.Configuration;
 3 import org.apache.hadoop.fs.*;
 4 
 5 public class C_ReadFile {
 6     public static void main(String[] args) {
 7         try {
 8             Var_init var = new Var_init();
 9             var.in = var.fs.open(var.p_remoteFilePath);
10             BufferedReader d = new BufferedReader(new InputStreamReader(var.in));
11             String line;
12             while ((line = d.readLine()) != null) {
13                 System.out.println(line);
14             }
15             System.out.println("read successfully");
16         } catch (Exception e) {
17             e.printStackTrace();
18         }
19     }
20 }
View Code

Var_init类参考 https://www.cnblogs.com/MiraculousB/p/13848744.html

posted @ 2020-10-20 20:37  Miraculous_B  阅读(968)  评论(0)    收藏  举报