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https://issues.apache.org/jira/browse/PDFBOX-5859?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tilman Hausherr updated PDFBOX-5859:
------------------------------------
Affects Version/s: 3.0.2 PDFBox
> StringIndexOutOfBoundsException in AppearanceGeneratorHelper
> ------------------------------------------------------------
>
> Key: PDFBOX-5859
> URL: https://issues.apache.org/jira/browse/PDFBOX-5859
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.32, 3.0.2 PDFBox
> Reporter: Nicola Costantini
> Priority: Blocker
>
> The bug fix for https://issues.apache.org/jira/browse/PDFBOX-5784 created
> another issue.
> In AppearanceGeneratorHelper line 676 is assumed, that fields have non-empty
> values:
>
> {code:java}
> font.getStringWidth(value.substring(0, 1)){code}
>
> resulting in this exceptions for empty fields, for example when
> refreshAppearances is called:
>
> {code:java}
> java.lang.StringIndexOutOfBoundsException: begin 0, end 1, length 0
> at java.base/java.lang.String.checkBoundsBeginEnd(String.java:4602)
> at java.base/java.lang.String.substring(String.java:2705)
> at
> org.apache.pdfbox.pdmodel.interactive.form.AppearanceGeneratorHelper.insertGeneratedCombAppearance(AppearanceGeneratorHelper.java:676)
> at
> org.apache.pdfbox.pdmodel.interactive.form.AppearanceGeneratorHelper.insertGeneratedAppearance(AppearanceGeneratorHelper.java:569)
> at
> org.apache.pdfbox.pdmodel.interactive.form.AppearanceGeneratorHelper.setAppearanceContent(AppearanceGeneratorHelper.java:441)
> at
> org.apache.pdfbox.pdmodel.interactive.form.AppearanceGeneratorHelper.setAppearanceValue(AppearanceGeneratorHelper.java:248)
> at
> org.apache.pdfbox.pdmodel.interactive.form.PDTextField.constructAppearances(PDTextField.java:264)
> at
> org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm.refreshAppearances(PDAcroForm.java:361){code}
>
>
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