import org.w3c.dom.*;
public class BaseNode
{
public BaseNode(Node d)
{
id = null;
node = d;
}
public Node getNode()
{
return node;
}
protected Node addAttribute(String attrName,String attrValue)
{
if(attrValue == null)
attrValue = "";
if(attrName.equalsIgnoreCase("id"))
id = attrValue;
Attr _attr = node.getOwnerDocument().createAttribute(attrName);
_attr.setNodeValue(attrValue);
return node.getAttributes().setNamedItem(_attr);
}
public void addLabel(String attrValue)
{
addAttribute("label",attrValue);
}
public void addTitle(String attrValue)
{
addAttribute("title",attrValue);
}
public void addExtInfo(String attrValue)
{
addAttribute("extinfo",attrValue);
}
public String getID()
{
return id;
}
public void addChecked(String attrValue)
{
addAttribute("checked",attrValue);
}
protected Node node;
private String id;
}
2，定义子类TreeNode:
import org.w3c.dom.Node;
// Referenced classes of package com.neusoft.unieap.util.tree:
// BaseNode
public class TreeNode extends BaseNode
{
public TreeNode(Node d)
{
super(d);
}
public void addLink(String attrValue)
{
addAttribute("link",attrValue);
}
}
3,定义子类Tree，注意Tree与TreeNode之间无继承关系，它们都只代表xml中不同类型的节点：
public class Tree extends BaseNode
{
public Tree(Node d)
{
super(d);
}
public TreeNode newTreeNode(String id)
{
TreeNode _node = new TreeNode(getNode().getOwnerDocument().createElement("TreeNode"));
getNode().appendChild(_node.getNode());
String _id = id;
_node.addAttribute("id",_id);
return _node;
}
public Tree newTree(String id)
{
Tree _node = new Tree(getNode().getOwnerDocument().createElement("Tree"));
getNode().appendChild(_node.getNode());
String _id = id;
_node.addAttribute("id",_id);
return _node;
}
}
4，定义子类Trees:
public class Trees extends BaseNode
{
public Trees(String id)
{
super(null);
xml_id = null;
treeType = "CommonTree";
Document doc = DOMTool.createNewDocument();
node = DOMTool.createAndAppendElement(doc,"Trees",null);
xml_id = id;
}
public Tree newTree(String id)
throws Exception
{
if(xml_id == null)
{
throw new Exception(" you must define trees's id firstly");
} else
{
Tree _node = new Tree(getNode().getOwnerDocument().createElement("Tree"));
getNode().appendChild(_node.getNode());
String _id = id;
_node.addAttribute("id",_id);
return _node;
}
}
public String getID()
{
return xml_id;
}
public void setTreeType(String treeType)
{
this.treeType = treeType;
}
public StringBuffer print()
throws Exception
{
if(xml_id == null)
throw new Exception("trees's id excepted");
StringBuffer xml = new StringBuffer();
String tmpStr = DOMTool.domToString(getNode());
tmpStr = tmpStr.substring(tmpStr.indexOf(">") + 2);
xml.append("<xml id =\"");
xml.append(xml_id);
xml.append("\" ondatasetcomplete=\"");
if(treeType.equalsIgnoreCase("SelectTree"))
xml.append("new SelectTree().init('");
else
xml.append("new CommonTree().init('");
xml.append(xml_id);
xml.append("');\"");
xml.append(">\n");
xml.append(tmpStr);
xml.append("\n");
xml.append("</xml>");
return xml;
}
public static void main(String args[])
{
try
{
Trees trees = new Trees("xml_data");
Tree tree = null;
TreeNode treeNode = null;
tree = trees.newTree("aa");
tree.addLabel("\u6D4B\u8BD5\u4E3B\u83DC\u53551");
tree.addTitle("\u6D4B\u8BD5\u83DC\u5355\u6807\u98981");
treeNode = tree.newTreeNode("aa1");
treeNode.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u53551");
treeNode.addTitle("\u6D4B\u8BD5\u5B50\u83DC\u5355\u6807\u98981");
treeNode.addLink("http://www.sina.com.cn");
treeNode = tree.newTreeNode("aa2");
treeNode.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u53552");
treeNode.addTitle("<\u6D4B\u8BD5\u5B50\u83DC\u5355\u6807\u98982>");
treeNode = tree.newTreeNode("aa3");
treeNode.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u53553");
treeNode.addTitle("\u6D4B\u8BD5\u5B50\u83DC\u5355\u6807\u98983");
treeNode.addLink("http://www.sina.com.cn");
tree = tree.newTree("bb");
tree.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u5355\u4E2D\u7684\u5D4C\u5957\u83DC\u5355");
tree.addTitle("\u6D4B\u8BD5\u5B50\u83DC\u5355\u4E2D\u7684\u5D4C\u5957\u83DC\u5355");
treeNode = tree.newTreeNode("bb1");
treeNode.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u53551");
treeNode.addTitle("\u6D4B\u8BD5\u5B50\u83DC\u5355\u6807\u98981");
treeNode.addLink("http://www.sina.com.cn");
treeNode = tree.newTreeNode("bb2");
treeNode.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u53552");
treeNode.addTitle("<\u6D4B\u8BD5\u5B50\u83DC\u5355\u6807\u98982>");
treeNode = tree.newTreeNode("bb3");
treeNode.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u53553");
treeNode.addTitle("<\u6D4B\u8BD5\u5B50\u83DC\u5355\u6807\u98983>");
tree = trees.newTree("cc");
tree.addLabel("\u6D4B\u8BD5\u4E3B\u83DC\u53552");
tree.addTitle("\u6D4B\u8BD5\u83DC\u5355\u6807\u98982");
treeNode = tree.newTreeNode("cc1");
treeNode.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u53551");
treeNode.addTitle("\u6D4B\u8BD5\u5B50\u83DC\u5355\u6807\u98981");
treeNode.addLink("http://www.sina.com.cn");
treeNode = tree.newTreeNode("cc2");
treeNode.addLabel("\u6D4B\u8BD5\u5B50\u83DC\u53552");
treeNode.addTitle("<\u6D4B\u8BD5\u5B50\u83DC\u5355\u6807\u98982>");
System.out.println(trees.print());
}
catch(Exception e)
{
System.out.println("e is " + e);
}
}
private String xml_id;
private String treeType;
}
5.新类
package test; import java.io.*; import java.util.*; import javax.xml.parsers.*; import org.apache.xerces.parsers.DOMParser; import org.xml.sax.*; import org.apache.xml.serialize.XMLSerializer; import org.w3c.dom.*; import org.xml.sax.InputSource; public class DOMTool { /* member class not found */ static class ParseErrorHandler implements ErrorHandler { public void warning(SAXParseException saxparseexception) throws SAXException { } public void error(SAXParseException e) throws SAXException { throw e; } public void fatalError(SAXParseException e) throws SAXException { throw e; } ParseErrorHandler() { } } public DOMTool() { } public static Document createNewDocument() { Document document = null; try { document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();//初始化一颗DOM树 } catch(ParserConfigurationException parserconfigurationexception) { } return document; } public static Document loadDocumentFromStr(String str) { Document document = null; try { InputStream is = new ByteArrayInputStream(str.getBytes()); document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new InputSource(is)); } catch(Exception exception) { } return document; } public static Document loadDocumentFromStr(String str,String charsetName) { Document document = null; try { InputStream is = new ByteArrayInputStream(str.getBytes(charsetName)); document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new InputSource(is)); } catch(Exception exception) { } return document; } public static Document loadDocumentFromFile(File f) { Document document = null; try { document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(f); } catch(Exception exception) { } return document; } public static Document loadDocumentFromInputStream(InputStream is) { Document document = null; try { document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(is); } catch(Exception exception) { } return document; } public static Document loadDocumentFromUri(String uri) { Document document = null; try { document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(uri); } catch(Exception exception) { } return document; } public static void parse(Document doc) throws Exception { DOMParser parser = new DOMParser(); //parser.setErrorHandler(new ParseErrorHandler()); parser.setFeature("http://xml.org/sax/features/validation",true); StringReader sr = new StringReader(domToString(doc)); InputSource is = new InputSource(sr); parser.parse(is); } public static void appendChild(Node node,Node subNode) { node.appendChild(subNode); } public static boolean containsNode(Node node,String tagName) { return getSingleNode(node,tagName) != null; } public static Node getSingleNode(Node node,String tagName) { if(node == null || tagName == null) return null; Node singleNode = null; NodeList nodeList = null; if(node instanceof Document) nodeList = ((Document)node).getElementsByTagName(tagName); else nodeList = ((Element)node).getElementsByTagName(tagName); if(nodeList != null && nodeList.getLength() > 0) singleNode = nodeList.item(0); return singleNode; } public static Element getSingleElement(Node node,String tagName) { Element singleElement = null; if(containsNode(node,tagName)) singleElement = (Element)getSingleNode(node,tagName); return singleElement; } public static NodeList getMultiNodes(Node node,String tagName) { if(node == null || tagName == null) return null; NodeList nodeList = null; if(node instanceof Document) nodeList = ((Document)node).getElementsByTagName(tagName); else nodeList = ((Element)node).getElementsByTagName(tagName); return nodeList; } public static Node getNode(Node node,String tagName,int offset) { if(node == null || tagName == null || offset < 0) return null; Node result = null; NodeList nodeList = getMultiNodes(node,tagName); if(offset < nodeList.getLength()) result = nodeList.item(offset); return result; } public static Element getElement(Node node,int offset) { Node result = getNode(node,tagName,offset); if(result == null) return null; else return (Element)result; } public static String getNodeValue(Node node) { if(node == null || (node instanceof Document)) return null; NodeList nodelist = node.getChildNodes(); if(nodelist.getLength() <= 0) return null; StringBuffer stringBuffer = new StringBuffer(); for(int i = 0; i < nodelist.getLength(); i++) { Node eachNode = nodelist.item(i); if(eachNode.getNodeType() == 3) stringBuffer.append(eachNode.getNodeValue()); } return stringBuffer.toString(); } public static String getSingleNodeValue(Node node,String tagName) { Node singleNode = getSingleNode(node,tagName); return getNodeValue(singleNode); } public static String[] getMultiNodeValues(Node node,String tagName) { NodeList nodeList = getMultiNodes(node,tagName); if(nodeList == null) return new String[0]; String nodeValues[] = new String[nodeList.getLength()]; for(int i = 0; i < nodeList.getLength(); i++) nodeValues[i] = getNodeValue(nodeList.item(i)); return nodeValues; } public static String getAttributeValue(Element element,String attrName) { if(element == null || attrName == null) return null; else return element.getAttribute(attrName); } public static HashMap getAttributeValues(Element element) { HashMap attributes = new HashMap(); NamedNodeMap map = element.getAttributes(); for(int i = 0; i < map.getLength(); i++) { Attr attr = (Attr)map.item(i); attributes.put(attr.getName(),attr.getValue()); } return attributes; } public static String getSingleAttributeValue(Node node,String attrName) { String attributeValue = null; Element element = getSingleElement(node,tagName); if(element != null) attributeValue = element.getAttribute(attrName); return attributeValue; } public static String[] getMultiAttributeValue(Node node,String attrName) { NodeList nodeList = getMultiNodes(node,tagName); if(nodeList == null) return new String[0]; String attributeValues[] = new String[nodeList.getLength()]; for(int i = 0; i < nodeList.getLength(); i++) attributeValues[i] = getAttributeValue((Element)nodeList.item(i),attrName); return attributeValues; } public static Element createElement(Document document,String elementName,String elementValue) { if(document == null || elementName == null) { return null; } else { Element element = document.createElement(elementName); setNodeValue(element,elementValue); return element; } } public static Element createAndAppendRoot(Document document,String elementValue) { if(document == null || elementName == null) { return null; } else { Element element = document.createElement(elementName); document.appendChild(element); setNodeValue(element,elementValue); return element; } } public static Element createAndAppendElement(Node node,String elementValue) { if(node == null || elementName == null) return null; Document document = null; if(node instanceof Document) document = (Document)node; else document = node.getOwnerDocument(); Element element = document.createElement(elementName); node.appendChild(element); setNodeValue(element,elementValue); return element; } public static void createAndAppendMultiElement(Node node,String elementValues[]) { if(node == null || elementName == null || elementValues == null || elementValues.length == 0 || (node instanceof Document)) return; Document document = node.getOwnerDocument(); for(int i = 0; i < elementValues.length; i++) { Element eachElement = document.createElement(elementName); node.appendChild(eachElement); setNodeValue(eachElement,elementValues[i]); } } public static void setNodeValue(Node node,String nodeValue) { if(node == null || (node instanceof Document)) return; Document document = node.getOwnerDocument(); NodeList nodeList = node.getChildNodes(); for(int i = 0; i < nodeList.getLength(); i++) { Node eachNode = nodeList.item(i); if(eachNode.getNodeType() == 3)//TEXT_NODE node.removeChild(eachNode); } if(nodeValue != null) node.appendChild(document.createTextNode(nodeValue));//向节点的子节点的列表的结尾添加新的子节点 } public static void setSingleNodeValue(Node node,String nodeValue) { Node singleNode = getSingleNode(node,tagName); if(singleNode != null) setNodeValue(singleNode,nodeValue); } public static void setAttribute(Element element,String attributeName,String attributeValue) { if(element != null && attributeName != null) element.setAttribute(attributeName,attributeValue); } public static void setAttributes(Element element,HashMap attributes) { if(element == null || attributes == null) return; String key; for(Iterator e = attributes.keySet().iterator(); e.hasNext(); element.setAttribute(key,attributes.get(key).toString())) key = e.next().toString(); } public static void setSingleNodeAttribute(Node node,String attributeValue) { Element element = getSingleElement(node,tagName); setAttribute(element,attributeName,attributeValue); } public static String domToString(Node node) { StringWriter stringwriter = new StringWriter(); XMLSerializer xmlserializer = new XMLSerializer(stringwriter,null); try { if(node instanceof Document) xmlserializer.serialize((Document)node); if(node instanceof Element) xmlserializer.serialize((Element)node); } catch(Exception exception) { return null; } return stringwriter.toString(); } public static Node unionNodes(Node oriNode,Node targetNode,boolean isApendChildNode) { HashMap oriAttrs = getAttributeValues((Element)oriNode); HashMap targetAttrs = getAttributeValues((Element)targetNode); String key; for(Iterator e = targetAttrs.keySet().iterator(); e.hasNext(); oriAttrs.put(key,targetAttrs.get(key))) key = e.next().toString(); setAttributes((Element)oriNode,oriAttrs); if(!isApendChildNode) return oriNode; NodeList nodelist = targetNode.getChildNodes(); int j = nodelist.getLength(); for(int i = 0; i < nodelist.getLength(); i++) if(nodelist.item(i).getNodeType() != 3) removeChildNodes(oriNode,nodelist.item(i).getNodeName()); for(int i = 0; i < nodelist.getLength(); i++) if(nodelist.item(i).getNodeType() != 3) appendChild(oriNode,nodelist.item(i)); return oriNode; } public static void removeChildNodes(Node node,String tagName) { NodeList nodelist = node.getChildNodes(); for(int i = 0; i < nodelist.getLength(); i++) if(nodelist.item(i).getNodeName().equals(tagName)) node.removeChild(nodelist.item(i)); } }
