https://bz.apache.org/bugzilla/show_bug.cgi?id=65326
--- Comment #7 from Johannes Weberhofer <jweberho...@weberhofer.at> --- I see the issue in an Springboot 2.6, Java Java 1.8.0_312 based application. I don't see the warning using POI 5.0.0. org.apache.poi.util.XMLHelper : SAX Feature unsupported [log suppressed for 5 minutes]http://javax.xml.XMLConstants/property/accessExternalDTD java.lang.IllegalArgumentException: Nicht unterstützt: http://javax.xml.XMLConstants/property/accessExternalDTD at org.apache.xalan.processor.TransformerFactoryImpl.setAttribute(TransformerFactoryImpl.java:571) ~[xalan-2.7.2.jar:na] at org.apache.poi.util.XMLHelper.trySet(XMLHelper.java:284) [poi-5.1.0.jar:5.1.0] at org.apache.poi.util.XMLHelper.getTransformerFactory(XMLHelper.java:224) [poi-5.1.0.jar:5.1.0] at org.apache.poi.util.XMLHelper.newTransformer(XMLHelper.java:231) [poi-5.1.0.jar:5.1.0] at org.apache.poi.openxml4j.opc.StreamHelper.saveXmlInStream(StreamHelper.java:56) [poi-ooxml-5.1.0.jar:5.1.0] at org.apache.poi.openxml4j.opc.internal.ZipContentTypeManager.saveImpl(ZipContentTypeManager.java:68) [poi-ooxml-5.1.0.jar:5.1.0] at org.apache.poi.openxml4j.opc.internal.ContentTypeManager.save(ContentTypeManager.java:450) [poi-ooxml-5.1.0.jar:5.1.0] at org.apache.poi.openxml4j.opc.ZipPackage.saveImpl(ZipPackage.java:554) [poi-ooxml-5.1.0.jar:5.1.0] at org.apache.poi.openxml4j.opc.OPCPackage.save(OPCPackage.java:1487) [poi-ooxml-5.1.0.jar:5.1.0] at org.apache.poi.ooxml.POIXMLDocument.write(POIXMLDocument.java:227) [poi-ooxml-5.1.0.jar:5.1.0] at org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBodyReturnValueHandler$StreamingResponseBodyTask.call(StreamingResponseBodyReturnValueHandler.java:111) ~[spring-webmvc-5.3.13.jar:5.3.13] at org.springframework.web.servlet.mvc.method.annotation.StreamingResponseBodyReturnValueHandler$StreamingResponseBodyTask.call(StreamingResponseBodyReturnValueHandler.java:98) ~[spring-webmvc-5.3.13.jar:5.3.13] at org.springframework.web.context.request.async.WebAsyncManager.lambda$startCallableProcessing$4(WebAsyncManager.java:337) ~[spring-web-5.3.13.jar:5.3.13] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[na:1.8.0_312] at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[na:1.8.0_312] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_312] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_312] at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_312] -- You are receiving this mail because: You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@poi.apache.org For additional commands, e-mail: dev-h...@poi.apache.org