Hadoop2.2异常NoFileSystemforscheme:hdfs

把eclipse中的hadoop项目&＃xff0c;换了一个工作空间&＃xff0c;再次启动任务时&＃xff0c;发现报如下异常&＃xff1a;
java">java.io.IOException: No FileSystem for scheme: hdfs
at org.apache.hadoop.fs.FileSystem.getFileSystemClass(FileSystem.java:2421)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2428)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:88)atorg.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2467)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2449)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:367)
at FileCopyToHdfs.readFromHdfs(FileCopyToHdfs.java:65)
at FileCopyToHdfs.main(FileCopyToHdfs.java:26)

原因一般是&＃xff0c;少导入hadoop-hdfs.jar这个jar包&＃xff0c;

导入该包后&＃xff0c;重新ant编译&＃xff0c;提交任务&＃xff0c;运行正常&＃xff01;