使用Java从xml文件中删除与属性名称匹配的所有xml属性?
我试图使用Java从xml文件中删除与属性名称匹配的所有xml属性。我被困在这一点上。在这段代码的底部,我能够在循环时获得每个节点的属性值,但我不知道如何从节点中完全删除属性。有什么想法吗使用Java从xml文件中删除与属性名称匹配的所有xml属性?,java,xml,Java,Xml,我试图使用Java从xml文件中删除与属性名称匹配的所有xml属性。我被困在这一点上。在这段代码的底部,我能够在循环时获得每个节点的属性值,但我不知道如何从节点中完全删除属性。有什么想法吗 import java.io.IOException; import java.io.StringWriter; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import
import java.io.IOException;
import java.io.StringWriter;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
public class StripAttribute {
public static void main(String[] args) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
org.w3c.dom.Document doc = null;
NodeList nodes = null;
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.parse("a.xml");
nodes = doc.getChildNodes();
} catch (IOException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
}
for ( int i = 0; i < nodes.getLength(); i++ ) {
String id = nodes.item(i).getNodeValue();
if ( id.equals("siteKey")) {
Element el = ((Attr) nodes.item(i)).getOwnerElement();
el.removeAttribute(id);
}
}
Transformer transformer;
StreamResult result = null;
try {
transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
result = new StreamResult(new StringWriter());
DOMSource source = new DOMSource(doc);
transformer.transform(source, result);
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerFactoryConfigurationError e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
}
String xmlString = result.getWriter().toString();
System.out.println(xmlString);
}
}
import java.io.IOException;
导入java.io.StringWriter;
导入javax.xml.parsers.DocumentBuilder;
导入javax.xml.parsers.DocumentBuilderFactory;
导入javax.xml.parsers.parserConfiguration异常;
导入javax.xml.transform.OutputKeys;
导入javax.xml.transform.Transformer;
导入javax.xml.transform.TransformerConfiguration异常;
导入javax.xml.transform.TransformerException;
导入javax.xml.transform.TransformerFactory;
导入javax.xml.transform.TransformerFactoryConfigurationError;
导入javax.xml.transform.dom.DOMSource;
导入javax.xml.transform.stream.StreamResult;
导入org.w3c.dom.*;
导入org.xml.sax.SAXException;
公共类StripAttribute{
公共静态void main(字符串[]args){
DocumentBuilderFactory工厂=DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
org.w3c.dom.Document doc=null;
NodeList节点=null;
试一试{
DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
DocumentBuilder db=dbf.newDocumentBuilder();
doc=db.parse(“a.xml”);
nodes=doc.getChildNodes();
}捕获(IOE异常){
e、 printStackTrace();
}捕获(ParserConfiguration异常e){
e、 printStackTrace();
}捕获(SAXE异常){
e、 printStackTrace();
}
对于(inti=0;i
下面是我要转换的XML示例:
试试:
for ( int i = 0; i < nodes.getLength(); i++ ) {
String id = nodes.item(i).getNodeValue();
if ( id.equals("siteKey")) {
//doc.removeChild(nodes.item(i));
Element el = ((Attr) nodes.item(i)).getOwnerElement();
el.removeAttribute(id);
}
}
更新:
for (int i = 0; i < nodes.getLength(); i++) {
String id = nodes.item(i).getNodeValue();
Element el = ((Attr) nodes.item(i)).getOwnerElement();
el.removeAttribute(id);
}
for(int i=0;i
以下是解决问题的最终代码:
import java.io.File;
import java.io.IOException;
import java.io.StringWriter;
import java.util.HashSet;
import java.util.Set;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
public class StripAttributes {
public static void main(String[] args) throws Exception {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
Document doc = null;
NodeList nodes = null;
Set<String> ids = null;
try {
doc = factory.newDocumentBuilder().parse(new File("a.xml"));
XPathExpression expr = XPathFactory.newInstance().newXPath()
.compile("//@siteKey");
ids = new HashSet<String>();
nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (XPathExpressionException e) {
e.printStackTrace();
}
for (int i = 0; i < nodes.getLength(); i++) {
System.out.println("."); //progress indicator
Element el = ((Attr) nodes.item(i)).getOwnerElement();
if ( el.hasAttribute("siteKey") ) el.removeAttribute("siteKey");
}
int dupes = 0;
for (int i = 0; i < nodes.getLength(); i++) {
String id = nodes.item(i).getNodeValue();
if (ids.contains(id)) {
System.out.format("%s is duplicate\n\n", id);
dupes++;
} else {
ids.add(id);
}
}
System.out.format("Total ids = %d\n Total Duplicates = %d\n", ids
.size(), dupes);
Transformer transformer;
StreamResult result = null;
try {
transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
result = new StreamResult(new StringWriter());
DOMSource source = new DOMSource(doc);
transformer.transform(source, result);
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerFactoryConfigurationError e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
}
String xmlString = result.getWriter().toString();
System.out.println(xmlString);
}
}
导入java.io.File;
导入java.io.IOException;
导入java.io.StringWriter;
导入java.util.HashSet;
导入java.util.Set;
导入javax.xml.parsers.DocumentBuilderFactory;
导入javax.xml.parsers.parserConfiguration异常;
导入javax.xml.transform.OutputKeys;
导入javax.xml.transform.Transformer;
导入javax.xml.transform.TransformerConfiguration异常;
导入javax.xml.transform.TransformerException;
导入javax.xml.transform.TransformerFactory;
导入javax.xml.transform.TransformerFactoryConfigurationError;
导入javax.xml.transform.dom.DOMSource;
导入javax.xml.transform.stream.StreamResult;
导入javax.xml.xpath.XPathConstants;
导入javax.xml.xpath.XPathExpression;
导入javax.xml.xpath.XPathExpressionException;
导入javax.xml.xpath.XPathFactory;
导入org.w3c.dom.*;
导入org.xml.sax.SAXException;
公共类属性{
公共静态void main(字符串[]args)引发异常{
DocumentBuilderFactory工厂=DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
单据单据=空;
NodeList节点=null;
设置id=null;
试一试{
doc=factory.newDocumentBuilder().parse(新文件(“a.xml”);
XPathExpression expr=XPathFactory.newInstance().newXPath()
.编译(“/@siteKey”);
ids=新的HashSet();
nodes=(NodeList)expr.evaluate(doc,XPathConstants.NODESET);
}捕获(SAXE异常){
e、 printStackTrace();
}捕获(IOE异常){
e、 printStackTrace();
}捕获(ParserConfiguration异常e){
e、 printStackTrace();
}捕获(XPathExpressionException e){
e、 printStackTrace();
}
对于(int i=0;iimport java.io.File;
import java.io.IOException;
import java.io.StringWriter;
import java.util.HashSet;
import java.util.Set;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.TransformerFactoryConfigurationError;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.*;
import org.xml.sax.SAXException;
public class StripAttributes {
public static void main(String[] args) throws Exception {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
Document doc = null;
NodeList nodes = null;
Set<String> ids = null;
try {
doc = factory.newDocumentBuilder().parse(new File("a.xml"));
XPathExpression expr = XPathFactory.newInstance().newXPath()
.compile("//@siteKey");
ids = new HashSet<String>();
nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (XPathExpressionException e) {
e.printStackTrace();
}
for (int i = 0; i < nodes.getLength(); i++) {
System.out.println("."); //progress indicator
Element el = ((Attr) nodes.item(i)).getOwnerElement();
if ( el.hasAttribute("siteKey") ) el.removeAttribute("siteKey");
}
int dupes = 0;
for (int i = 0; i < nodes.getLength(); i++) {
String id = nodes.item(i).getNodeValue();
if (ids.contains(id)) {
System.out.format("%s is duplicate\n\n", id);
dupes++;
} else {
ids.add(id);
}
}
System.out.format("Total ids = %d\n Total Duplicates = %d\n", ids
.size(), dupes);
Transformer transformer;
StreamResult result = null;
try {
transformer = TransformerFactory.newInstance().newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
result = new StreamResult(new StringWriter());
DOMSource source = new DOMSource(doc);
transformer.transform(source, result);
} catch (TransformerConfigurationException e) {
e.printStackTrace();
} catch (TransformerFactoryConfigurationError e) {
e.printStackTrace();
} catch (TransformerException e) {
e.printStackTrace();
}
String xmlString = result.getWriter().toString();
System.out.println(xmlString);
}
}
NamedNodeMap attributes = node.getAttributes();
attributes.removeNamedItem(attName);