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Bug
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Resolution: Fixed
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Normal
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5.3.0, 5.5.0
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None
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None
Steps to reproduce
1. to enforce an error during exporting pdf when drawing a chart
add
<library-property>
<name>io.keikai.chart.render.server.url</name>
<value>http://127.0.0.1:3003</value>
</library-property>
2. call PdfExporter to export demo_sample.xlsx
Current result
It consumes the real error and print the exception of close()
java.io.IOException: The document has no pages. at com.lowagie.text.pdf.PdfPages.writePageTree(Unknown Source) at com.lowagie.text.pdf.PdfWriter.close(Unknown Source) at com.lowagie.text.pdf.PdfDocument.close(Unknown Source) at com.lowagie.text.Document.close(Unknown Source) at io.keikai.model.impl.pdf.PdfExporter.export(PdfExporter.java:281)
Expected Result
print or throw the real exception. Since current implementation will hide the real root cause.
SEVERE: failed to export
java.io.IOException: Make sure the rendering server and network work well. Server URL: http://127.0.0.1:3003
at io.keikaiex.util.ChartDrawer.drawChartImage(ChartDrawer.java:98)
PdfExport should handle all exceptions well, at least print it.
The original use case
On the production server, there is an error during exporting PDF. We can only see the error:
java.io.IOException: The document has no pages.
But the original root cause is:
java.lang.NullPointerException at sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1264) at sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:219) at sun.awt.FontConfiguration.init(FontConfiguration.java:107) at sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:774) at sun.font.SunFontManager$2.run(SunFontManager.java:431) at java.security.AccessController.doPrivileged(AccessController.java:678) at sun.font.SunFontManager.<init>(SunFontManager.java:376) at sun.awt.FcFontManager.<init>(FcFontManager.java:35) at sun.awt.X11FontManager.<init>(X11FontManager.java:57) at java.lang.J9VMInternals.newInstanceImpl(Native Method) at java.lang.Class.newInstance(Class.java:1852) at sun.font.FontManagerFactory$1.run(FontManagerFactory.java:83) at java.security.AccessController.doPrivileged(AccessController.java:678) at sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74) at sun.font.SunFontManager.getInstance(SunFontManager.java:250) at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:264) at sun.java2d.SunGraphics2D.getFontMetrics(SunGraphics2D.java:863) at org.jfree.text.TextFragment.calculateDimensions(TextFragment.java:230) at org.jfree.text.TextLine.calculateDimensions(TextLine.java:194) at org.jfree.text.TextBlock.calculateDimensions(TextBlock.java:171) at org.jfree.chart.block.LabelBlock.arrange(LabelBlock.java:316) at org.jfree.chart.block.BorderArrangement.arrangeNN(BorderArrangement.java:210) at org.jfree.chart.block.BorderArrangement.arrange(BorderArrangement.java:137) at org.jfree.chart.block.BlockContainer.arrange(BlockContainer.java:179) at org.jfree.chart.block.CenterArrangement.arrangeNN(CenterArrangement.java:284) at org.jfree.chart.block.CenterArrangement.arrange(CenterArrangement.java:98) at org.jfree.chart.block.BlockContainer.arrange(BlockContainer.java:179) at org.jfree.chart.block.ColumnArrangement.arrangeNN(ColumnArrangement.java:320) at org.jfree.chart.block.ColumnArrangement.arrangeRR(ColumnArrangement.java:264) at org.jfree.chart.block.ColumnArrangement.arrange(ColumnArrangement.java:157) at org.jfree.chart.block.BlockContainer.arrange(BlockContainer.java:179) at org.jfree.chart.title.LegendTitle.arrange(LegendTitle.java:501) at org.jfree.chart.JFreeChart.drawTitle(JFreeChart.java:1340) at org.jfree.chart.JFreeChart.draw(JFreeChart.java:1222) at org.jfree.chart.JFreeChart.createBufferedImage(JFreeChart.java:1411) at io.keikaiex.util.ChartDrawer.drawChartImage(ChartDrawer.java:47)
But we can't get this error at first since the exception is hidden by the previous exception.