我想从以下xml字符串中删除xmlns属性.我编写了一个
java程序,但不确定它是否需要在这里完成.
输入XML字符串：
<?xml version="1.0" encoding="UTF-8"?>
<Payment xmlns="http://api.com/schema/store/1.0">
<Store>abc</Store>
</Payment>
预期的XML输出字符串：
<?xml version="1.0" encoding="UTF-8"?>
<Payment>
<Store>abc</Store>
</Payment>
Java类：
public class XPathUtils {
public static void main(String[] args) {
String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><Payment xmlns=\"http://api.com/schema/store/1.0\"><Store>abc</Store></Payment>";
String afterNsRemoval = removeNameSpace(xml);
System.out.println("afterNsRemoval = " + afterNsRemoval);
}
public static String removeNameSpace(String xml) {
try {
System.out.println("before xml = " + xml);
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
InputSource inputSource = new InputSource(new StringReader(xml));
Document xmlDoc = builder.parse(inputSource);
Node root = xmlDoc.getDocumentElement();
NodeList rootchildren = root.getChildNodes();
Element newroot = xmlDoc.createElement(root.getNodeName());
for (int i = 0; i < rootchildren.getLength(); i++) {
newroot.appendChild(rootchildren.item(i).cloneNode(true));
}
xmlDoc.replaceChild(newroot,root);
return xmlDoc.toString();
} catch (Exception e) {
System.out.println("Could not parse message as xml: " + e.getMessage());
}
return "";
}
}
输出：
before xml = <?xml version="1.0" encoding="UTF-8"?><Payment xmlns="http://api.com/schema/store/1.0"><Store>abc</Store></Payment> afterNsRemoval = [#document: null]
解决方法
这是使用XPath和vtd-xml(我是作者)的代码…
import com.ximpleware.*;
import java.io.*;
public class removeAttrNode {
public static void main(String[] s) throws VTDException,Exception{
VTDGen vg = new VTDGen(); ByteArrayOutputStream baos = new ByteArrayOutputStream();
String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><Payment xmlns=\"http://api.com/schema/store/1.0\"><Store>abc</Store></Payment>";
vg.setDoc(xml.getBytes());
vg.parse(false); // turn off namespace awareness so that
VTDNav vn = vg.getNav();
AutoPilot ap = new AutoPilot(vn);
XMLModifier xm = new XMLModifier(vn);
ap.selectXPath("//@xmlns");
int i=0;
while((i=ap.evalXPath())!=-1){
xm.remove();
}
xm.output(baos);
System.out.println(baos.toString());
}
}
