调查一个 pdf 打印报错：
ExceptionConverter: org.apache.catalina.connector.ClientAbortException: java.net.SocketException: Software caused connection abort: socket write error at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:407) at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:480) at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:366) at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:432) at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:420) at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:91) at java.io.BufferedOutputStream.write(Unknown Source) at com.itextpdf.text.pdf.OutputStreamCounter.write(OutputStreamCounter.java:157) at java.io.ByteArrayOutputStream.writeTo(Unknown Source) at com.itextpdf.text.pdf.PdfStream.toPdf(PdfStream.java:353) at com.itextpdf.text.pdf.PdfIndirectObject.writeTo(PdfIndirectObject.java:157) at com.itextpdf.text.pdf.PdfWriter$PdfBody.add(PdfWriter.java:396) at com.itextpdf.text.pdf.PdfWriter$PdfBody.add(PdfWriter.java:376) at com.itextpdf.text.pdf.PdfWriter$PdfBody.add(PdfWriter.java:329) at com.itextpdf.text.pdf.PdfWriter.addToBody(PdfWriter.java:780) at com.itextpdf.text.pdf.TrueTypeFontUnicode.writeFont(TrueTypeFontUnicode.java:385) at com.itextpdf.text.pdf.FontDetails.writeFont(FontDetails.java:274) at com.itextpdf.text.pdf.PdfWriter.addSharedObjectsToBody(PdfWriter.java:1249) at com.itextpdf.text.pdf.PdfWriter.close(PdfWriter.java:1169) at com.itextpdf.text.pdf.PdfDocument.close(PdfDocument.java:780) at com.itextpdf.text.Document.close(Document.java:409) ExceptionConverter: org.ap
