-
Bug
-
Resolution: Fixed
-
P4
-
1.4.1
-
tiger
-
x86
-
linux
Name: jk109818 Date: 04/08/2003
FULL PRODUCT VERSION :
java version "1.4.1_02"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_02-b06)
Java HotSpot(TM) Client VM (build 1.4.1_02-b06, mixed mode)
Also tested with 1.4.1_01
FULL OS VERSION :
Linux balin 2.4.18-k7 #1 Sun Apr 14 13:19:11 EST 2002 i686 unknown unknown GNU/Linux (Debian 3.0 (Woody))
Microsoft Windows XP [Version 5.1.2600]
A DESCRIPTION OF THE PROBLEM :
If the following html is parsed a NullPointerException will be thrown!
<table border="0" cellpadding="" cellspacing="0">
<tr>
<td>Hello World</td>
</tr>
</table>
This is because the cellpadding attribute has an empty value. The cellspacing and border attributes can have an empty value without any problems.
Another html string that fails:
<head>
a<title>Hello World</title>
</head>
This causes the renderer to throw a ClassCastException. Any letters before the title tag will cause this.
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Parse any html with either of the examples mentioned in the description!
EXPECTED VERSUS ACTUAL BEHAVIOR :
A parsed html string.
Fails with an exception.
ERROR MESSAGES/STACK TRACES THAT OCCUR :
First exception:
Exception in thread "main" java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:389)
at javax.swing.text.SimpleAttributeSet.addAttribute(SimpleAttributeSet.java:176)
at javax.swing.text.html.CSS.translateHTMLToCSS(CSS.java:687)
at javax.swing.text.html.StyleSheet.translateHTMLToCSS(StyleSheet.java:494)
at javax.swing.text.html.StyleSheet$ViewAttributeSet.<init>(StyleSheet.java:2479)
at javax.swing.text.html.StyleSheet.getViewAttributes(StyleSheet.java:312)
at javax.swing.text.html.BlockView.getAttributes(BlockView.java:275)
at javax.swing.text.html.StyleSheet$ViewAttributeSet.getResolveParent(StyleSheet.java:2612)
at javax.swing.text.html.StyleSheet$ViewAttributeSet.doGetAttribute(StyleSheet.java:2592)
at javax.swing.text.html.StyleSheet$ViewAttributeSet.getAttribute(StyleSheet.java:2572)
at javax.swing.text.StyleConstants.getAlignment(StyleConstants.java:709)
at javax.swing.text.ParagraphView.setPropertiesFromAttributes(ParagraphView.java:104)
at javax.swing.text.html.ParagraphView.setPropertiesFromAttributes(ParagraphView.java:87)
at javax.swing.text.html.ParagraphView.setParent(ParagraphView.java:60)
at javax.swing.text.CompositeView.replace(CompositeView.java:200)
at javax.swing.text.BoxView.replace(BoxView.java:164)
at javax.swing.text.CompositeView.loadChildren(CompositeView.java:97)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.html.BlockView.setParent(BlockView.java:55)
at javax.swing.text.CompositeView.replace(CompositeView.java:200)
at javax.swing.text.BoxView.replace(BoxView.java:164)
at javax.swing.text.html.TableView$RowView.replace(TableView.java:1369)
at javax.swing.text.CompositeView.loadChildren(CompositeView.java:97)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.CompositeView.replace(CompositeView.java:200)
at javax.swing.text.BoxView.replace(BoxView.java:164)
at javax.swing.text.html.TableView.replace(TableView.java:845)
at javax.swing.text.CompositeView.loadChildren(CompositeView.java:97)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.html.TableView.setParent(TableView.java:749)
at javax.swing.text.CompositeView.replace(CompositeView.java:200)
at javax.swing.text.BoxView.replace(BoxView.java:164)
at javax.swing.text.CompositeView.loadChildren(CompositeView.java:97)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.html.BlockView.setParent(BlockView.java:55)
at javax.swing.text.html.HTMLEditorKit$HTMLFactory$BodyBlockView.setParent(HTMLEditorKit.java:1261)
at javax.swing.text.CompositeView.replace(CompositeView.java:200)
at javax.swing.text.BoxView.replace(BoxView.java:164)
at javax.swing.text.CompositeView.loadChildren(CompositeView.java:97)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.html.BlockView.setParent(BlockView.java:55)
at javax.swing.plaf.basic.BasicHTML$Renderer.<init>(BasicHTML.java:283)
at javax.swing.plaf.basic.BasicHTML.createHTMLView(BasicHTML.java:47)
at htmlbug.<init>(htmlbug.java:11)
at htmlbug.main(htmlbug.java:21)
Second exception:
Exception in thread "main" java.lang.ClassCastException
at javax.swing.text.html.EditableView.setParent(EditableView.java:88)
at javax.swing.text.CompositeView.replace(CompositeView.java:200)
at javax.swing.text.CompositeView.loadChildren(CompositeView.java:97)
at javax.swing.text.FlowView$LogicalView.loadChildren(FlowView.java:607)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.FlowView.loadChildren(FlowView.java:120)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.html.ParagraphView.setParent(ParagraphView.java:58)
at javax.swing.text.CompositeView.replace(CompositeView.java:200)
at javax.swing.text.BoxView.replace(BoxView.java:164)
at javax.swing.text.CompositeView.loadChildren(CompositeView.java:97)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.html.BlockView.setParent(BlockView.java:55)
at javax.swing.text.html.HTMLEditorKit$HTMLFactory$BodyBlockView.setParent(HTMLEditorKit.java:1261)
at javax.swing.text.CompositeView.replace(CompositeView.java:200)
at javax.swing.text.BoxView.replace(BoxView.java:164)
at javax.swing.text.CompositeView.loadChildren(CompositeView.java:97)
at javax.swing.text.CompositeView.setParent(CompositeView.java:122)
at javax.swing.text.html.BlockView.setParent(BlockView.java:55)
at javax.swing.plaf.basic.BasicHTML$Renderer.<init>(BasicHTML.java:283)
at javax.swing.plaf.basic.BasicHTML.createHTMLView(BasicHTML.java:47)
at htmlbug.<init>(htmlbug.java:11)
at htmlbug.main(htmlbug.java:21)
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
import javax.swing.*;
public class htmltest {
public htmltest() {
JLabel dummyComponent = new JLabel("dummy");
//String text = "a<title>Hello World</title>"; // ClassCastException
//String text = "<title>Hello World</title>"; // Works
//String text = "<table border='' cellpadding='0' cellspacing=''><tr><td>Hello World</td></tr></table>"; // Works
//String text = "<table border='0' cellpadding='' cellspacing='0'><tr><td>Hello World</td></tr></table>"; // NullPointerException
String text = "<table border='0' cellpadding= cellspacing='0'><tr><td>Hello World</td></tr></table>"; // NullPointerException
javax.swing.text.Document doc = ((javax.swing.text.View)javax.swing.plaf.basic.BasicHTML.createHTMLView(dummyComponent, text)).getDocument();
try {
text = doc.getText(0,doc.getLength());
} catch (Exception ex) {
System.out.println(ex);
}
System.out.println("Text: "+text);
}
public static void main(String[] args) throws Exception {
new htmltest();
}
}
---------- END SOURCE ----------
CUSTOMER SUBMITTED WORKAROUND :
None, except removing the problematic tags / attributes from the html.
(Review ID: 183345)
======================================================================
- relates to
-
-
- Closed
-
-
-
- Closed
-