使用 XSD 进行命名空间验证的 XML 引发异常 [英] XML with namespace Validation with XSD throws exception

问题描述

我有一个 xml 文件，它是来自 Webservice 的响应.它涉及到各种命名空间.当我尝试使用适当的 XSD 对其进行验证时，它会抛出org.xml.sax.SAXParseException:cvc-elt.1:找不到元素 'SOAP-ENV:Envelope' 的声明".所有命名空间的命名空间声明都在响应中声明.以下是我的代码

I have a xml file which is a response from Webservice.It has got various namespaces involved with it. When I try to validate it with appropriate XSD its throwing "org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'SOAP-ENV:Envelope'." The namespace declaration for all the namespaces are declared in the response. Following is my code

try {
        DocumentBuilderFactory xmlFact = DocumentBuilderFactory.newInstance();
            SchemaFactory schemaFactory = SchemaFactory
            .newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
            SAXSource mainInputStream = new SAXSource(new InputSource(new FileInputStream(new File("FIXEDINCOME_v3_0.xsd"))));
            SAXSource importInputStream1 =new SAXSource(new InputSource(new FileInputStream(new File("Rating.xsd"))));
            SAXSource importInputStream2 = new SAXSource(new InputSource(new FileInputStream(new File("Datatypes.xsd"))));
            Source[] sourceSchema = new SAXSource[]{mainInputStream , importInputStream1, importInputStream2};
            Schema schema = schemaFactory.newSchema(sourceSchema);  
            xmlFact.setNamespaceAware(true);
            xmlFact.setSchema(schema);
            DocumentBuilder builder = xmlFact.newDocumentBuilder();
            xmlDOC = builder.parse(new InputSource(new StringReader(inputXML)));
            NamespaceContext ctx = new NamespaceContext() {
                public String getNamespaceURI(String prefix) {
                    String uri;
                    if (prefix.equals("ns0"))
                        uri = "http://namespace.worldnet.ml.com/EDS/Standards/Common/Service_v1_0/";
                    else if (prefix.equals("ns1"))
                        uri = "http://namespace.worldnet.ml.com/EDS/Product/Services/Get_Product_Data_Svc_v3_0/";
                    else if (prefix.equals("ns2"))
                        uri = "http://namespace.worldnet.ml.com/DataSOA/Product/Objects/FixedIncome/FixedIncome_v3_0/";
                    else if (prefix.equals("ns3")) {
                        uri = "http://namespace.worldnet.ml.com/DataSOA/Product/Objects/Rating/Rating_v2_0/";
                    } else if (prefix.equals("SOAP-ENV")) {
                        uri = "http://schemas.xmlsoap.org/soap-envelope/";
                    } else
                        uri = null;

                    return uri;
                }

                // Dummy implementation - not used!
                public Iterator getPrefixes(String val) {
                    return null;
                }

                // Dummy implemenation - not used!
                public String getPrefix(String uri) {
                    return null;
                }
            };

            XPathFactory xpathFact = XPathFactory.newInstance();
            xPath = xpathFact.newXPath();
            xPath.setNamespaceContext(ctx);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

推荐答案

我认为问题不在于检测 SOAP-ENV 前缀的命名空间定义.验证器需要定义在该命名空间中使用的元素的 XSD 文件，以便验证 SOAP-ENV:Envelope 元素，因此您需要告诉验证器该架构所在的位置.

I don't think the problem is with detecting the namespace definition for the SOAP-ENV prefix. The validator needs the XSD file that defines elements used in that namespace in order to validate the SOAP-ENV:Envelope element, so you need to tell the validator where that schema is located.

我认为解决方案是将以下内容添加到您的 XML 响应中:

I think the solution is either to add the following to your XML reponse:

<SOAP-ENV:Envelope
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsi="http://schemas.xmlsoap.org/soap/envelope/"
  xsi:schemaLocation="http://schemas.xmlsoap.org/soap/envelope/      
           http://schemas.xmlsoap.org/soap/envelope/">

或者，从网络上下载该架构，将其作为 XSD 文件保存到您的本地文件系统，然后将其添加到您的 sourceSchema 数组中.第一种方法应该是首选，因为它会导致更可移植的代码(和 XML).

Or, go download that schema off the web, save it to your local filesystem as an XSD file, and add it to your sourceSchema array. The first method should be preferred as it leads to more portable code (and XML).

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