[英]Multiple NameSpace in Xml Xpath value
Am new in using Xpath parsing in Java for Xmls. 在Java for Xmls中使用Xpath解析是一个新功能。 But I learnt it and it worked pretty well until this below issue am not sure how to go traverse to next node in this . 但是我了解了它,并且效果很好,直到下面的问题不确定如何遍历此节点。 Please find the below code and Let me know what needs to be corrected . 请找到以下代码,然后让我知道需要更正的内容。
package test;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.TransformerException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
public class CallTestcall {
public static void main(String[] args) throws Exception {
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(true);
DocumentBuilder builder = domFactory.newDocumentBuilder();
String responsePath1 = "C:/Verizon/webserviceTestTool/generatedResponse/example.xml";
Document doc1 = builder.parse(responsePath1);
String responsePath0 = "C:/Verizon/webserviceTestTool/generatedResponse/response.xml";
Document doc0 = builder.parse(responsePath0);
example0(doc0);
example1(doc1);
}
private static void example0(Document example)
throws XPathExpressionException, TransformerException {
System.out.println("\n*** First example - namespacelookup hardcoded ***");
XPath xPath = XPathFactory.newInstance().newXPath();
xPath.setNamespaceContext(new HardcodedNamespaceResolver());
String result = xPath.evaluate("s:Envelope/s:Body/ns1:UpdateSessionResponse",
example);
// I tried all the Values to traverse further to UpdateSessionResult but am not able to I used the following xpath expressions
result = xPath.evaluate("s:Envelope/s:Body/ns1:UpdateSessionResponse/a:UpdateSessionResult",
example);
result = xPath.evaluate("s:Envelope/s:Body/ns1:UpdateSessionResponse/i:UpdateSessionResult",
example);
System.out.println("example0 : "+result);
}
private static void example1(Document example)
throws XPathExpressionException, TransformerException {
System.out.println("\n*** First example - namespacelookup hardcoded ***");
XPath xPath = XPathFactory.newInstance().newXPath();
xPath.setNamespaceContext(new HardcodedNamespaceResolver());
String result = xPath.evaluate("books:booklist/technical:book/:author",
example);
System.out.println("example1 : "+result);
}
}
Please find the class that implements nameSpaceContext where I have added the prefixes 请找到实现nameSpaceContext的类,在其中添加前缀
package test;
import java.util.Iterator;
import javax.xml.XMLConstants;
import javax.xml.namespace.NamespaceContext;
public class HardcodedNamespaceResolver implements NamespaceContext {
/**
* This method returns the uri for all prefixes needed. Wherever possible it
* uses XMLConstants.
*
* @param prefix
* @return uri
*/
public String getNamespaceURI(String prefix) {
if (prefix == null) {
throw new IllegalArgumentException("No prefix provided!");
} else if (prefix.equals(XMLConstants.DEFAULT_NS_PREFIX)) {
return "http://univNaSpResolver/book";
} else if (prefix.equals("books")) {
return "http://univNaSpResolver/booklist";
} else if (prefix.equals("fiction")) {
return "http://univNaSpResolver/fictionbook";
} else if (prefix.equals("technical")) {
return "http://univNaSpResolver/sciencebook";
} else if (prefix.equals("s")) {
return "http://schemas.xmlsoap.org/soap/envelope/";
} else if (prefix.equals("a")) {
return "http://channelsales.corp.cox.com/vzw/v1/data/";
} else if (prefix.equals("i")) {
return "http://www.w3.org/2001/XMLSchema-instance";
} else if (prefix.equals("ns1")) {
return "http://channelsales.corp.cox.com/vzw/v1/";
}
else {
return XMLConstants.NULL_NS_URI;
}
}
public String getPrefix(String namespaceURI) {
// Not needed in this context.
return null;
}
public Iterator getPrefixes(String namespaceURI) {
// Not needed in this context.
return null;
}
}
Please find my Xml :::: 请找到我的Xml ::::
String XmlString = "<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><s:Body><UpdateSessionResponse xmlns="http://channelsales.corp.cox.com/vzw/v1/"><UpdateSessionResult xmlns:a="http://channelsales.corp.cox.com/vzw/v1/data/" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<a:ResponseHeader>
<a:SuccessFlag>true</a:SuccessFlag>
<a:ErrorCode i:nil="true"/>
<a:ErrorMessage i:nil="true"/>
<a:Timestamp>2012-12-05T15:28:35.5363903-05:00</a:Timestamp>
</a:ResponseHeader>
<a:SessionId>cd3ce09e-eb33-48e8-b628-ecd406698aee</a:SessionId>
<a:CacheKey i:nil="true"/>
Try the following. 尝试以下方法。 It works for me. 这个对我有用。
result = xPath.evaluate("/s:Envelope/s:Body/ns1:UpdateSessionResponse/ns1:UpdateSessionResult",
example);
Since you are searching from the root of the document, precede the xpath expression with a forward slash (/)
由于您是从文档的根目录搜索的,因此在xpath表达式之前加一个正斜杠(/)
Also, in the XML fragment below, the string xmlns="http...
means you are setting that to be the default namespace. In your namespace resolver you are giving this the prefix ns1. So even though UpdateSessionResult
is defining two namespace prefixes a
and i
, it does not use those prefixes itself (for example <a:UpdateSessionResult...
) therefore it belongs to the default namespace (named 'ns1') 另外,在下面的XML片段中,字符串xmlns="http...
意味着您将其设置为默认名称空间。在名称空间解析器中,您为其指定了前缀ns1。因此即使UpdateSessionResult
定义了两个名称空间前缀a
和i
,它本身不使用那些前缀(例如<a:UpdateSessionResult...
),因此它属于默认名称空间(名为'ns1')
<UpdateSessionResponse xmlns="http://channelsales.corp.cox.com/vzw/v1/">
<UpdateSessionResult xmlns:a="http://channelsales.corp.cox.com/vzw/v1/data/" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
That's why you need to use ns1:UpdateSessionResult
instead of either a:UpdateSessionResult
or i:UpdateSessionResult
这就是为什么您需要使用ns1:UpdateSessionResult
而不是a:UpdateSessionResult
或i:UpdateSessionResult
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