[
https://issues.apache.org/jira/browse/PDFBOX-2121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027621#comment-14027621
]
Tilman Hausherr commented on PDFBOX-2121:
-----------------------------------------
If "resources" isn't null, then it means that you didn't post the full NPE.
Line 321 is
{code}
String fontMapping = resources.addFont(font);
{code}
can only throw an NPE if resources is null, but you tell that it isn't null.
Also, have you tried to reproduce the bug by creating a "mininal" code (less
than a page) that just writes stuff to the stream in growing font sizes?
> NullPointerException when calling
> org.apache.pdfbox.pdmodel.edit.PDPageContentStream.setFont()
> ----------------------------------------------------------------------------------------------
>
> Key: PDFBOX-2121
> URL: https://issues.apache.org/jira/browse/PDFBOX-2121
> Project: PDFBox
> Issue Type: Bug
> Components: Writing
> Affects Versions: 1.8.5
> Reporter: Michel Pawlak
> Priority: Critical
>
> *Context / how to reproduce *
> When creating a table and writing it to a pdf file, i get a NPE when setting
> the font size above a given size. As a result my application crashes. It
> seems to occur when the text i try to write is too large for the page.
> *Stack trace*
> java.lang.NullPointerException: null
> at
> org.apache.pdfbox.pdmodel.edit.PDPageContentStream.setFont(PDPageContentStream.java:321)
> ~[pdfbox-1.8.5.jar:na]
> at
> qa.reportgenerator.report.pdf.table.PDFTable.drawRow(PDFTable.java:67)
> ~[classes/:na]
> at
> qa.reportgenerator.report.pdf.SummaryGenerator.drawTableLine(SummaryGenerator.java:365)
> ~[classes/:na]
> at
> qa.reportgenerator.report.pdf.SummaryGenerator.drawTable(SummaryGenerator.java:268)
> ~[classes/:na]
> at
> qa.reportgenerator.report.pdf.SummaryGenerator.draw(SummaryGenerator.java:62)
> ~[classes/:na]
> at
> qa.reportgenerator.report.pdf.PDFReportGenerator.generate(PDFReportGenerator.java:28)
> ~[classes/:na]
> at
> qa.reportgenerator.report.pdf.PDFReportGenerator.generate(PDFReportGenerator.java:18)
> ~[classes/:na]
> at qa.reportgenerator.Runner.generatePDFReport(Runner.java:257)
> [classes/:na]
> at qa.reportgenerator.Runner.execute(Runner.java:76) [classes/:na]
> *Additional info*
> - PDFTable, is a class allowing me to easily create tables (adding cells,
> rows, setting text orientation, font /color / background of each cell,
> horizonal/vertical text alignment, etc.) The content of the line
> "qa.reportgenerator.report.pdf.table.PDFTable.drawRow(PDFTable.java:67)" is :
> {code}
> this.contentStream.setFont(cell.getFont(), cell.getFontSize());
> {code}
> - On this line, contentStream is a PDPageContentStream instance, and when the
> MPE occurs, cell.getFont returns PDType1Font.HELVETICA and cell.getFontSize
> returns 6.
> - I get no NPE when font size is < 6 or when the width of the text I try to
> write is smaller.
> - I do not close manually the PDPageContentStream.
> - Page size is A4.
> *Debuger data*
> When debugging, it appears that the problem occurs when calling the setFont
> method of the last cell of a row.
> Indeed, when calling setFont on the cell left to the last cell of the table,
> the content of the "resources" variable is :
> {code}
> resources PDResources (id=1692)
> colorspaces null
> fontMappings HashMap<K,V> (id=2032)
> cache null
> elementCount 2
> elementData HashMap$Entry<K,V>[16] (id=1714)
> hashMask 0
> keySet null
> loadFactor 0.75
> modCount 2
> threshold 12
> useAltHashing false
> valuesCollection null
> fonts HashMap<K,V> (id=1964)
> graphicsStates null
> images null
> patterns null
> resources COSDictionary (id=2802)
> direct false
> items LinkedHashMap<K,V> (id=1036)
> accessOrder false
> cache null
> elementCount 2
> elementData
> LinkedHashMap$LinkedHashMapEntry<K,V>[16] (id=1274)
> hashMask 0
> head LinkedHashMap$LinkedHashMapEntry<K,V>
> (id=1166)
> keySet LinkedHashMap$1 (id=1811)
> loadFactor 0.75
> modCount 2
> tail LinkedHashMap$LinkedHashMapEntry<K,V>
> (id=2803)
> threshold 12
> useAltHashing false
> valuesCollection null
> needToBeUpdate false
> shadings null
> xobjectMappings HashMap<K,V> (id=1253)
> cache null
> elementCount 1
> elementData HashMap$Entry<K,V>[16] (id=1796)
> hashMask 0
> keySet null
> loadFactor 0.75
> modCount 1
> threshold 12
> useAltHashing false
> valuesCollection null
> xobjects HashMap<K,V> (id=1947)
> cache null
> elementCount 1
> elementData HashMap$Entry<K,V>[16] (id=1580)
> hashMask 0
> keySet HashMap$1 (id=1463)
> this$0 HashMap<K,V> (id=1947)
> loadFactor 0.75
> modCount 1
> threshold 12
> useAltHashing false
> valuesCollection null
> {code}
> then the NPE occurs on the next call to setFont(). The resources object is
> not null, but it has then changed :
> {code}
> resources PDResources (id=1168)
> colorspaces null
> fontMappings HashMap<K,V> (id=1665)
> cache null
> elementCount 0
> elementData HashMap$Entry<K,V>[16] (id=1505)
> hashMask 0
> keySet null
> loadFactor 0.75
> modCount 0
> threshold 12
> useAltHashing false
> valuesCollection null
> fonts null
> graphicsStates null
> images null
> patterns null
> resources COSDictionary (id=2802)
> direct false
> items LinkedHashMap<K,V> (id=1036)
> accessOrder false
> cache null
> elementCount 2
> elementData
> LinkedHashMap$LinkedHashMapEntry<K,V>[16] (id=1274)
> hashMask 0
> head LinkedHashMap$LinkedHashMapEntry<K,V>
> (id=1166)
> keySet LinkedHashMap$1 (id=1811)
> loadFactor 0.75
> modCount 2
> tail LinkedHashMap$LinkedHashMapEntry<K,V>
> (id=2803)
> threshold 12
> useAltHashing false
> valuesCollection null
> needToBeUpdate false
> shadings null
> xobjectMappings null
> xobjects null
> {code}
> I hope that you have enough information.
> Thank you for your help !
--
This message was sent by Atlassian JIRA
(v6.2#6252)
