VTD-XML异常:名称空间限定异常:带前缀的属性不限定

I receive an XML via a web service and I am using legacy code (which uses dom4j) to perform some xml transformation. Loading/parsing the original XML into VTD-XML (VTDGen) works fine, no exceptions thrown. However, after loading the xml into dom4j, I noticed some of the element namespace declarations and attributes are re-arranged. Apparently, this re-arrangement causes VTD-XML to throw the following exception:Exception:Name space qualification Exception: prefixed attribute not qualifiedLine Number: 101 Offset: 1827Here is the element at this line number in the original XML:<RR_PerformanceSite:PerformanceSite_1_4 RR_PerformanceSite:FormVersion="1.4" xmlns:NSF_ApplicationChecklist="http://apply.grants.gov/forms/NSF_ApplicationChecklist-V1.1" xmlns:NSF_CoverPage="http://apply.grants.gov/forms/NSF_CoverPage-V1.1" xmlns:NSF_DeviationAuthorization="http://apply.grants.gov/forms/NSF_DeviationAuthorization-V1.1" xmlns:NSF_Registration="http://apply.grants.gov/forms/NSF_Registration-V1.1" xmlns:NSF_SuggestedReviewers="http://apply.grants.gov/forms/NSF_SuggestedReviewers-V1.1" xmlns:PHS398_CareerDevelopmentAwardSup="http://apply.grants.gov/forms/PHS398_CareerDevelopmentAwardSup_1_1-V1.1" xmlns:PHS398_Checklist="http://apply.grants.gov/forms/PHS398_Checklist_1_3-V1.3" xmlns:PHS398_CoverPageSupplement="http://apply.grants.gov/forms/PHS398_CoverPageSupplement_1_4-V1.4" xmlns:PHS398_ModularBudget="http://apply.grants.gov/forms/PHS398_ModularBudget-V1.1" xmlns:PHS398_ResearchPlan="http://apply.grants.gov/forms/PHS398_ResearchPlan_1_3-V1.3" xmlns:PHS_CoverLetter="http://apply.grants.gov/forms/PHS_CoverLetter_1_2-V1.2" xmlns:RR_Budget="http://apply.grants.gov/forms/RR_Budget-V1.1" xmlns:RR_KeyPersonExpanded="http://apply.grants.gov/forms/RR_KeyPersonExpanded_1_2-V1.2" xmlns:RR_OtherProjectInfo="http://apply.grants.gov/forms/RR_OtherProjectInfo_1_2-V1.2" xmlns:RR_PerformanceSite="http://apply.grants.gov/forms/PerformanceSite_1_4-V1.4" xmlns:RR_PersonalData="http://apply.grants.gov/forms/RR_PersonalData-V1.1" xmlns:RR_SF424="http://apply.grants.gov/forms/RR_SF424_1_2-V1.2" xmlns:RR_SubawardBudget="http://apply.grants.gov/forms/RR_SubawardBudget-V1.2" xmlns:SF424C="http://apply.grants.gov/forms/SF424C-V1.0" xmlns:att="http://apply.grants.gov/system/Attachments-V1.0" xmlns:codes="http://apply.grants.gov/system/UniversalCodes-V2.0" xmlns:globlib="http://apply.grants.gov/system/GlobalLibrary-V2.0">Here is the same element after loaded into dom4j:<RR_PerformanceSite:PerformanceSite_1_4 xmlns:RR_PerformanceSite="http://apply.grants.gov/forms/PerformanceSite_1_4-V1.4" xmlns:NSF_ApplicationChecklist="http://apply.grants.gov/forms/NSF_ApplicationChecklist-V1.1" xmlns:NSF_CoverPage="http://apply.grants.gov/forms/NSF_CoverPage-V1.1" xmlns:NSF_DeviationAuthorization="http://apply.grants.gov/forms/NSF_DeviationAuthorization-V1.1" xmlns:NSF_Registration="http://apply.grants.gov/forms/NSF_Registration-V1.1" xmlns:NSF_SuggestedReviewers="http://apply.grants.gov/forms/NSF_SuggestedReviewers-V1.1" xmlns:PHS398_CareerDevelopmentAwardSup="http://apply.grants.gov/forms/PHS398_CareerDevelopmentAwardSup_1_1-V1.1" xmlns:PHS398_Checklist="http://apply.grants.gov/forms/PHS398_Checklist_1_3-V1.3" xmlns:PHS398_CoverPageSupplement="http://apply.grants.gov/forms/PHS398_CoverPageSupplement_1_4-V1.4" xmlns:PHS398_ModularBudget="http://apply.grants.gov/forms/PHS398_ModularBudget-V1.1" xmlns:PHS398_ResearchPlan="http://apply.grants.gov/forms/PHS398_ResearchPlan_1_3-V1.3" xmlns:PHS_CoverLetter="http://apply.grants.gov/forms/PHS_CoverLetter_1_2-V1.2" xmlns:RR_Budget="http://apply.grants.gov/forms/RR_Budget-V1.1" xmlns:RR_KeyPersonExpanded="http://apply.grants.gov/forms/RR_KeyPersonExpanded_1_2-V1.2" xmlns:RR_OtherProjectInfo="http://apply.grants.gov/forms/RR_OtherProjectInfo_1_2-V1.2" xmlns:RR_PersonalData="http://apply.grants.gov/forms/RR_PersonalData-V1.1" xmlns:RR_SF424="http://apply.grants.gov/forms/RR_SF424_1_2-V1.2" xmlns:RR_SubawardBudget="http://apply.grants.gov/forms/RR_SubawardBudget-V1.2" xmlns:SF424C="http://apply.grants.gov/forms/SF424C-V1.0" xmlns:att="http://apply.grants.gov/system/Attachments-V1.0" xmlns:codes="http://apply.grants.gov/system/UniversalCodes-V2.0" xmlns:globlib="http://apply.grants.gov/system/GlobalLibrary-V2.0" RR_PerformanceSite:FormVersion="1.4">The problem is regarding the attribute (at offset 1827, at the end of the element) in the new XML element: RR_PerformanceSite:FormVersion="1.4"Here is what removes the exception:1. Adding the RR_PerformanceSite xmlns declaration for this element to the root element of the XML doc.2. Replacing new element with original element. This SEEMS to lead me to believe that the order of the attributes/ns declarations affects VTD when parsing.NOTE: I parse the xml doc setting ns aware to 'true' with both xml docs (original and post-dom4j xml). Also, new VTD objects are created for each xml, original and post-dom4j.I tried to put 'RR_PerformanceSite:FormVersion="1.4"' at the beginning of the element like the original but that does not remove the exception. The offset in the error message is different due to the change of location of the attribute. Does the order of the xmlns declarations affect VTD?I have looked at the VTDGen source code and cannot figure out why this exception is being thrown.Why would dom4j parse the new doc and vtd is unable to? Can anyone can shed some light on this? 解决方案 It appears to be a bug on VTD-XML, related with namespace declaration order.Always reproducible using the following Java codepublic class SchemaTester { /** * @param args */ public static void main(String[] args) throws Exception { String bad = "C:/Temp/VTD_bad.xml"; // XML files to test String good = "C:/Temp/VTD_good.xml"; StringBuilder sb = new StringBuilder(); char[] buf = new char[4*1024]; FileReader fr = new FileReader(bad); int readed = 0; while ((readed = fr.read(buf, 0, buf.length)) != -1) { sb.append(buf, 0, readed); } fr.close(); String x = sb.toString(); //instantiate VTDGen //and call parse VTDGen vg = new VTDGen(); vg.setDoc(x.getBytes("UTF-8")); vg.parse(true); // set namespace awareness to true VTDNav vn = vg.getNav(); AutoPilot ap = new AutoPilot (vn); ap.selectXPath("//*/@*"); int i= -1; while((i=ap.evalXPath()) != -1) { // i will be attr name, i+1 will be attribute value System.out.println("\t\tAttribute ==> " + vn.toNormalizedString(i)); System.out.println("\t\tValue ==> " + vn.toNormalizedString(i+1)); } }}The OP has uploaded the XML to https://gist.github.com/2696220 这篇关于VTD-XML异常:名称空间限定异常:带前缀的属性不限定的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！