com.wudaosoft.net.utils.XmlUtils Maven / Gradle / Ivy
/**
* Copyright 2009-2017 Wudao Software Studio(wudaosoft.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.wudaosoft.net.utils;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import com.wudaosoft.net.xml.XmlObject;
/**
* @author Changsoul.Wu
*/
public class XmlUtils {
private static final Logger Log = LoggerFactory.getLogger(XmlUtils.class);
private static DocumentBuilderFactory dbFactory;
public static Document readXml(InputStream in) {
if(dbFactory == null){
dbFactory = DocumentBuilderFactory.newInstance();
dbFactory.setIgnoringElementContentWhitespace(true);
dbFactory.setCoalescing(true);
dbFactory.setIgnoringComments(true);
}
if(in == null)
return null;
try {
return dbFactory.newDocumentBuilder().parse(in);
} catch (SAXException e) {
} catch (IOException e) {
} catch (ParserConfigurationException e) {
}
return null;
}
public static Document readXml(String xmltext) {
if(dbFactory == null){
dbFactory = DocumentBuilderFactory.newInstance();
dbFactory.setIgnoringElementContentWhitespace(true);
dbFactory.setCoalescing(true);
dbFactory.setIgnoringComments(true);
}
if(xmltext == null || xmltext.trim().equals(""))
return null;
try {
StringReader sr = new StringReader(xmltext);
InputSource is = new InputSource(sr);
return dbFactory.newDocumentBuilder().parse(is);
} catch (SAXException e) {
} catch (IOException e) {
} catch (ParserConfigurationException e) {
}
return null;
}
public static String getVaue(Document doc, String key){
if(doc == null){
Log.error("XML Document is null");
return null;
}
Node node = getNode(doc, key);
if(node != null){
return node.getFirstChild().getNodeValue();
}
return null;
}
public static NamedNodeMap getAttributes(Document doc, String key){
if(doc == null){
Log.error("XML Document is null");
return null;
}
Node node = getNode(doc, key);
if(node != null){
return node.getAttributes();
}
return null;
}
public static String getAttribute(NamedNodeMap n, String key){
if(n == null){
return null;
}
Node node = n.getNamedItem(key);
if(node != null){
return node.getNodeValue();
}
return null;
}
public static String getAttribute(Document doc, String key, String key2){
if(doc == null){
return null;
}
return getAttribute(getAttributes(doc, key), key2);
}
private static Node getNode(Document doc, String key){
if(doc == null){
Log.error("XML Document is null");
return null;
}
NodeList nList = doc.getElementsByTagName(key);
if(nList.getLength() > 0){
Node node = nList.item(0);
return node;
}
return null;
}
public static String toString(Document doc) {
Transformer transformer;
try {
transformer = TransformerFactory.newInstance().newTransformer();
// transformer.setOutputProperty(OutputKeys.INDENT, "yes");
StreamResult result = new StreamResult(new StringWriter());
DOMSource source = new DOMSource(doc);
transformer.transform(source, result);
String xmlString = result.getWriter().toString();
return xmlString.toString();
} catch (TransformerConfigurationException e) {
Log.error(e.getMessage(), e);
} catch (TransformerFactoryConfigurationError e) {
Log.error(e.getMessage(), e);
} catch (TransformerException e) {
Log.error(e.getMessage(), e);
}
return null;
}
public static Map convertNodeToMap(Node node){
NodeList nodeList = node.getChildNodes();
Map map = new HashMap(nodeList.getLength());
for(int i = 0; i < nodeList.getLength(); i++){
Node nodec = nodeList.item(i);
String key = nodec.getNodeName();
Object value = null;
if(nodec.hasChildNodes()){
NodeList nodeListc = nodec.getChildNodes();
if(nodeListc.getLength() == 1){
Node noded = nodeListc.item(0);
short type = noded.getNodeType();
if(type == 3 || type == 4){
value = noded.getNodeValue();
}
if(noded.getNodeType() == 1){
value = convertNodeToMap(nodec);
}
}else{
value = convertNodeToMap(nodec);
}
}
map.put(key, value);
}
return map;
}
public static String append(String key, Object value) {
StringBuilder x = new StringBuilder();
x.append("<").append(key).append(">").append(value).append("");
return x.toString();
}
public static String appendCDATA(String key, Object value) {
StringBuilder x = new StringBuilder();
x.append("<").append(key).append(">");
return x.toString();
}
public static String appendStartTag(String key) {
StringBuilder x = new StringBuilder();
x.append("<").append(key).append(">");
return x.toString();
}
public static String appendEndTag(String key) {
StringBuilder x = new StringBuilder();
x.append("");
return x.toString();
}
@SuppressWarnings("unchecked")
public static String buildString(Map mapc) {
StringBuilder xx = new StringBuilder();
for(Map.Entry entry : mapc.entrySet()){
Object v = entry.getValue();
if(v !=null){
if (v instanceof Map) {
xx.append(append(entry.getKey(), buildString((Map)v)));
}else if (v instanceof List) {
List list = (List)v;
xx.append(appendStartTag(entry.getKey()));
if(list.size() > 0) {
Object type = list.get(0);
if(type instanceof XmlObject){
List listXmlObject = (List) list ;
for(XmlObject x : listXmlObject){
xx.append(buildString(x.buildMap()));
}
}else if(type instanceof Map){
List> listMapObject = (List>) list ;
for(Map m : listMapObject){
xx.append(buildString(m));
}
}
}
xx.append(appendEndTag(entry.getKey()));
}else if (isNumeric(v.toString())) {
xx.append(append(entry.getKey(), v));
} else {
xx.append(appendCDATA(entry.getKey(), v));
}
}else{
xx.append(append(entry.getKey(), ""));
}
}
return xx.toString();
}
public static boolean isNumeric(String str) {
Pattern pattern = Pattern.compile("[0-9]*");
return pattern.matcher(str).matches();
}
}