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  1. JDK
  2. JDK-4835940

LTP: Serialized form of bean is invalid

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 1.4.1
    • Fix Version/s: None
    • Component/s: client-libs
    • Labels:
    • Subcomponent:
    • CPU:
      x86
    • OS:
      windows_2000

      Description



      Name: gm110360 Date: 03/21/2003


      FULL PRODUCT VERSION :
      java version "1.4.0"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
      Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)

      FULL OPERATING SYSTEM VERSION :
      Microsoft Windows 2000 [Version 5.00.2195]

      A DESCRIPTION OF THE PROBLEM :
      Serialized form of the bean is corrupt and does not
      correspond to the actual bean state. It cannot be deserialized
      back.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1.Compile&Run attached class
      2.
      3.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      The serialized form of the bean contains broken object
      references. Serialized object is below:

      <?xml version="1.0" encoding="UTF-8"?>
      <java version="1.4.0" class="java.beans.XMLDecoder">
       <object class="Test">
        <void property="table">
         <void method="put">
          <void class="Test">
           <void property="table">
            <void method="put">
             <object idref="Font0"/>
             <string>qqqqqqqqqqqq</string>
            </void>
           </void>
           <void id="Font0" property="key"/>
          </void>
          <object idref="Font0"/>
          <string>qqqqqqqqqqqq</string>
         </void>
        </void>
        <void id="Font0" property="key"/>
       </object>
      </java>


      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      java.lang.Exception: Unbound variable: Font0
      Continuing ...
      java.lang.NullPointerException
      Continuing ...



      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------

      import java.util.HashMap;
      import java.util.Arrays;
      import java.beans.XMLEncoder;
      import java.beans.XMLDecoder;
      import java.io.*;
      import java.awt.Font;

      public class Test {
      private Font key = new Font("Arial", Font.BOLD, 12); // !!!
      private HashMap table = new HashMap();

      public Test() {
      }

      public Font getKey() {
      return key;
      }

      public void setKey(Font key) {
      this.key = key;
      }

      public HashMap getTable() {
      return table;
      }

      public void setTable(HashMap table) {
      this.table = table;
      }

      public void setString(String value) {
      table.put(getKey(), value);
      }

      public static void main(String[] args) {
      try {
      Test lr = new Test();
      lr.setString("qqqqqqqqqqqq");
      write(lr, new FileOutputStream("test.xml"));
      read(new FileInputStream("test.xml"));
      } catch (Exception ex) {
      ex.printStackTrace();
      }
      }

      public static void write(Object obj, OutputStream out) throws
      IOException {
      BufferedOutputStream bout = new BufferedOutputStream
      (out);
      XMLEncoder encoder = new XMLEncoder(out);
      encoder.writeObject(obj);
      encoder.close();
      bout.close();
      }

      public static Object read(InputStream in) throws IOException {
      XMLDecoder decoder = new XMLDecoder(in);
      Object result = decoder.readObject();
      decoder.close();
      return result;
      }

      }

      ---------- END SOURCE ----------
      (Review ID: 146830)
      ======================================================================

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              Assignee:
              mdavidsosunw Mark Davidson (Inactive)
              Reporter:
              gmanwanisunw Girish Manwani (Inactive)
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