nioで作ったBufferedWriterに変えたら例外になった
- 3. ある日
- 4. 変更前 普通に生成していた val charset: String = … new BufferedWriter( new OutputStreamWriter( new FileOutputStream(new File("...")), charset ) )
- 5. 変更後 深く考えずnioのFiles.newBufferedWriterに変更 val charset: String = … Files.newBufferedWriter( Paths.get("..."), Charset.forName(charset) )
- 6. 例外発生
- 9. スタックトレース Failed to import XML. java.nio.charset.UnmappableCharacterException: Input length = 1 at java.nio.charset.CoderResult.throwException(CoderResult.java:282) at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:285) at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:125) at java.io.OutputStreamWriter.write(OutputStreamWriter.java:207) at java.io.BufferedWriter.flushBuffer(BufferedWriter.java:129) at java.io.BufferedWriter.close(BufferedWriter.java:265)
- 10. (´へ｀;ウーム
- 11. (━＿━)ゝｳｰﾑ
- 12. ﾊｯ (ﾟДﾟ;)!!
- 14. こんなテストコードを用意 // 通常版 def normal() = { val charset = "EUC_JP" val data = "Java"+ "u3030" +"Scala" IO(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File("...")), charset))). using { writer => IO { writer.write(data) writer.flush() } } }
- 15. こんなテストコードを用意 // 通常版 def normal() = { val charset = "EUC_JP" val data = "Java"+ "u3030" +"Scala" IO(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File("...")), charset))). using { writer => IO { writer.write(data) writer.flush() } } } Javaで、EUC_JPで出力不可な文字
- 17. nioの場合 // nio版 def nio() = { val charset = "EUC_JP" val data = "Java"+ "u3030" +"Scala" IO(Files.newBufferedWriter(Paths.get("..."), Charset.forName(charset))).using { writer => IO { writer.write(data) writer.flush() } } }
- 19. (;￢д￢) ｱﾔｼｲ
- 20. スタックトレース Failed to import XML. java.nio.charset.UnmappableCharacterException: Input length = 1 at java.nio.charset.CoderResult.throwException(CoderResult.java:282) at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:285) at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:125) at java.io.OutputStreamWriter.write(OutputStreamWriter.java:207) at java.io.BufferedWriter.flushBuffer(BufferedWriter.java:129) at java.io.BufferedWriter.close(BufferedWriter.java:265)
- 27. 従来の場合
- 30. (oﾟ∀ﾟ)o ｷﾀ――♪
- 31. これが答え