如何使用原始InputStream实例化FSDataInputStream？

Question

我真的不明白我如何创建这样的inputStream，它是Seekable和PositionedReadable ......

Resource resource = new ClassPathResource("somefile");
InputStream bla = resource.getInputStream();
FSDataInputStream inputStream = new FSDataInputStream (bla);

投掷FS线：

java.lang.IllegalArgumentException: In is not an instance of Seekable or PositionedReadable

我需要做嘲笑，这对我来说是一个阻碍。

Answer 1

FSDataInputStream 构造函数（如下所示）在FSDataInputStream.java中定义，希望 InputStream 参数为 {{ 1}} instance 或 Seekable

PositionedReadable

希望 public FSDataInputStream(InputStream in) throws IOException { super(in); if( !(in instanceof Seekable) || !(in instanceof PositionedReadable) ) { throw new IllegalArgumentException( "In is not an instance of Seekable or PositionedReadable"); } } 帮助您。

solution

参考：accumulo