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  1. JDK
  2. JDK-6539065

XMLStreamReader close the underlaying stream

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Future Project
    • Affects Version/s: 6
    • Fix Version/s: None
    • Component/s: xml
    • Labels:
    • Subcomponent:
    • CPU:
      x86
    • OS:
      windows_xp

      Description

      FULL PRODUCT VERSION :
      java version "1.6.0"
      Java(TM) SE Runtime Environment (build 1.6.0-b105)
      Java HotSpot(TM) Client VM (build 1.6.0-b105, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      Windows XP, Windows 200

      A DESCRIPTION OF THE PROBLEM :
      XMLStreamReader close the underlying stream when next method is called and the node type is "End Document".

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Read more than one XML from the same stream. (See source code)




      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      XMLStreamReader never close the underlying stream as says the documentation.
      ACTUAL -
      XMLStreamReader close the stream

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      Exception in thread "main" java.io.IOException: Stream closed
      at java.util.zip.ZipInputStream.ensureOpen(ZipInputStream.java:44)
      at java.util.zip.ZipInputStream.closeEntry(ZipInputStream.java:91)
      at XMLStreamReaderBug.main(XMLStreamReaderBug.java:47)

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      import java.io.FileInputStream;
      import java.io.FileOutputStream;
      import java.io.IOException;
      import java.io.InputStream;
      import java.io.OutputStream;
      import java.util.zip.ZipEntry;
      import java.util.zip.ZipInputStream;
      import java.util.zip.ZipOutputStream;

      import javax.xml.stream.XMLInputFactory;
      import javax.xml.stream.XMLOutputFactory;
      import javax.xml.stream.XMLStreamException;
      import javax.xml.stream.XMLStreamReader;
      import javax.xml.stream.XMLStreamWriter;

      public class XMLStreamReaderBug {

      private static String FILENAME = "XMLStreamReaderBug.zip";

      public static void main(String[] args) throws IOException, XMLStreamException {

      ZipOutputStream zos = new ZipOutputStream(
      new FileOutputStream(FILENAME));

      zos.putNextEntry(new ZipEntry("a.xml"));
      writeXML(zos);
      zos.closeEntry();

      zos.putNextEntry(new ZipEntry("b.xml"));
      writeXML(zos);
      zos.closeEntry();

      zos.close();

      ZipInputStream zis = new ZipInputStream(
      new FileInputStream(FILENAME));

      for(ZipEntry entry = zis.getNextEntry();
      entry != null;
      entry = zis.getNextEntry()){

      readXML(zis);

      zis.closeEntry();
      }
      zis.close();
      }

      private static void writeXML(OutputStream os) throws XMLStreamException{
      XMLOutputFactory outputFactory = XMLOutputFactory.newInstance();
      XMLStreamWriter writer = outputFactory.createXMLStreamWriter(os);
      writer.writeStartDocument();
      writer.writeStartElement("test");
      writer.writeCharacters("test");
      writer.writeEndElement();
      writer.writeEndDocument();
      writer.close();
      }

      private static void readXML(InputStream is) throws XMLStreamException{

      XMLInputFactory factory = XMLInputFactory.newInstance();
      XMLStreamReader reader = factory.createXMLStreamReader(is);

      for (int nodeType = reader.next();
      nodeType != XMLStreamReader.END_DOCUMENT;
      nodeType = reader.next()) {
      //BUG: When nodeType == END_DOCUMENT -> Reader close stream
      System.out.println(nodeType);
      }
      reader.close();
      }

      }
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Overload Stream close method:
      FileInputStream fis = new FileInputStream(FILENAME);
      ZipInputStream zis = new ZipInputStream(fis){
      public void close() throws IOException {
      //Do nothing
      }
      };

      //Do something

      fis.close();

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              • Assignee:
                joehw Joe Wang
                Reporter:
                ryeung Roger Yeung (Inactive)
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                • Created:
                  Updated:
                  Resolved:
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