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https://issues.apache.org/jira/browse/PDFBOX-1518?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13585468#comment-13585468
]
Thomas Chojecki commented on PDFBOX-1518:
-----------------------------------------
I've got the same error with your patch. The problem is that the List that was
passed to the convertStringListToCOSNameCOSArray(List<String>) contains
COSNames. This happen because a non generic List was casted to a List<String>
and the exception appears right after the first get.
You can check it by running the example:
org.apache.pdfbox.example.pdmodel.HelloWorld.java
I would prefer to let the List non generic and check the input. A quickfix
would be something like that:
----
public static COSArray convertStringListToCOSNameCOSArray( List strings )
{
COSArray retval = new COSArray();
for( int i=0; i<strings.size(); i++ )
{
Object object = strings.get( i );
if (object instanceof COSName) {
retval.add((COSName)object);
} else {
retval.add( COSName.getPDFName( strings.get( i ).toString() ) );
}
}
return retval;
}
----
My stacktrace was the same but the hint is:
PDStream:148 <- here you put a COSName in a List and pass it to
PDStream:300 <- here you try to call convertStringListToCOSNameCOSArray
> ClassCastException writing text to a page
> -----------------------------------------
>
> Key: PDFBOX-1518
> URL: https://issues.apache.org/jira/browse/PDFBOX-1518
> Project: PDFBox
> Issue Type: Bug
> Components: Writing
> Affects Versions: 1.8.0
> Environment: Windows x86_64, jdk1.6.0u31
> Reporter: Thomas Jodes
> Assignee: Andreas Lehmkühler
> Priority: Critical
> Fix For: 1.8.0
>
>
> I switched from 1.7.1 to 1.8.0-SNAPSHOT. Following code did not work any
> longer:
> @Test
> public void testGenerateNewDocument() throws IOException,
> COSVisitorException {
> PDDocument doc = null;
> try {
> doc = new PDDocument();
> PDPage page = new PDPage();
> doc.addPage(page);
> PDFont font = PDType1Font.HELVETICA_BOLD;
>
> PDJpeg image = new PDJpeg(doc, getLogoInputStream() );
> PDPageContentStream contentStream = new
> PDPageContentStream(doc, page, true, true);
> contentStream.beginText();
> contentStream.setFont(font, 12);
> contentStream.moveTextPositionByAmount(100, 700);
> contentStream.drawString("Hello World!");
> contentStream.endText();
> contentStream.drawImage(image, 20, 20);
> contentStream.close();
> doc.save( getWorkDirectory() + File.separator +
> "pdfbox-testGenerateNewDocument.pdf" );
> } finally {
> if (doc != null) {
> doc.close();
> }
> }
> }
> java.lang.ClassCastException: org.apache.pdfbox.cos.COSName cannot be cast to
> java.lang.String
> at
> org.apache.pdfbox.pdmodel.common.COSArrayList.convertStringListToCOSNameCOSArray(COSArrayList.java:364)
> at
> org.apache.pdfbox.pdmodel.common.PDStream.setFilters(PDStream.java:300)
> at
> org.apache.pdfbox.pdmodel.edit.PDPageContentStream.<init>(PDPageContentStream.java:258)
> at
> org.apache.pdfbox.pdmodel.edit.PDPageContentStream.<init>(PDPageContentStream.java:159)
> at
> tests.evaluation.pdfbox.PdfboxEvaluationTest.testGenerateNewDocument(PdfboxEvaluationTest.java:47)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:80)
> at org.testng.internal.Invoker.invokeMethod(Invoker.java:701)
> at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:893)
> at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1218)
> at
> org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
> at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
> at org.testng.TestRunner.privateRun(TestRunner.java:768)
> at org.testng.TestRunner.run(TestRunner.java:617)
> at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
> at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
> at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
> at org.testng.SuiteRunner.run(SuiteRunner.java:240)
> at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
> at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:87)
> at org.testng.TestNG.runSuitesSequentially(TestNG.java:1185)
> at org.testng.TestNG.runSuitesLocally(TestNG.java:1110)
> at org.testng.TestNG.run(TestNG.java:1022)
> at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:109)
> at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:202)
> at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:173)
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