Scala String 与 InputStream 互转

﹏ヽ暗。殇╰゛Y 2021-09-23 18:50 571阅读 0赞

1. String 转 InputStream

  1. val is = new ByteArrayInputStream(str.getBytes())
  3. // 转 BufferedInputStream
  4. val bis = new BufferedInputStream(is)
  6. // 打印
  7. Stream.continually(bis.read()).takeWhile(_ != -1).foreach(println(_))
  9. bis.close()
  10. is.close()

#

2. String 转 outoutStream

  1. val is = new ByteArrayInputStream(str.getBytes())
  2. val bis = new BufferedInputStream(is)
  4. // 主要是转outputStream
  5. val bos = new ByteArrayOutputStream()
  6. val buffer = new Array[Byte](4096)
  7. Stream.continually(bis.read(buffer)).takeWhile(_ != -1).foreach(bos.write(buffer, 0, _))
  9. // 转 String 打印
  10. println(bos.toString)
  12. bos.close()
  13. bis.close()
  14. is.close()

3. InputStream 转 String

  1. val br = new BufferedReader(new InputStreamReader(new FileInputStream("strPath")))
  3. var result = new StringBuilder
  4. result += Stream.continually(br.readLine()).takeWhile(_ != null).mkString("\n")
  5. println(result.toString)
  7. bufferedReader.close()

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