將txt轉換爲csv無法使用java的大內容8

Question

嗨我想從txt轉換爲CSV文件。在我的txt文件中我有\ t作爲分隔符。 所以我的Java代碼看起來如下

public static void main(String[] args) throws Exception { 
     final Path path = Paths.get("D:\\chat-log\\output\\"); 
     final Path txt = path.resolve("summary_Traders_Violation_Rule2_Conversation.txt"); 
     final Path csv = path.resolve("Rule2.csv"); 
     try (
       final Stream<String> lines = Files.lines(txt); 
       final PrintWriter pw = new PrintWriter(Files.newBufferedWriter(csv, StandardOpenOption.CREATE_NEW))) { 
      lines.map((line) -> line.split("\t")). 
        map((line) -> Stream.of(line).collect(Collectors.joining(","))). 
        forEach(pw::println); 
     } 
    } 

它創建CSV與異常和csv文件不列入包含從txt文件完整數據文件。直到第1,2,3列爲止的空白值都正常。第4列值開始拋出異常。

Exception in thread "main" java.io.UncheckedIOException: java.nio.charset.MalformedInputException: Input length = 1 
    at java.io.BufferedReader$1.hasNext(Unknown Source) 
    at java.util.Iterator.forEachRemaining(Unknown Source) 
    at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Unknown Source) 
    at java.util.stream.AbstractPipeline.copyInto(Unknown Source) 
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source) 
    at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source) 
    at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source) 
    at java.util.stream.AbstractPipeline.evaluate(Unknown Source) 
    at java.util.stream.ReferencePipeline.forEach(Unknown Source) 
    at XPathEx.TxtToCsv.main(TxtToCsv.java:24) 
Caused by: java.nio.charset.MalformedInputException: Input length = 1 
    at java.nio.charset.CoderResult.throwException(Unknown Source) 
    at sun.nio.cs.StreamDecoder.implRead(Unknown Source) 
    at sun.nio.cs.StreamDecoder.read(Unknown Source) 
    at java.io.InputStreamReader.read(Unknown Source) 
    at java.io.BufferedReader.fill(Unknown Source) 
    at java.io.BufferedReader.readLine(Unknown Source) 
    at java.io.BufferedReader.readLine(Unknown Source) 
    ... 10 more 

Answer 1

Files.lines(Path)打開文件用UTF-8字符集閱讀，你的文件似乎包含一些非UTF-8的數據。

檢查您需要的字符集，然後改爲使用Files.lines(Path path, Charset cs)。