XML之DOM4、JDom等解析方式

1、生成XML

Java代码

1. publicvoidcreateApplicationConfigXML(){
2. //建立document对象
3. try{
4. Documentdocument=DocumentHelper.createDocument();
5. Elementroot=document.addElement("root");//添加文档根
6. root.addComment("这个一个注释");//加入一行注释
7. Elementrequest=root.addElement("request");//添加root的子节点
8. request.addAttribute("type","cat");
9. request.addAttribute("flow","tong");
10. request.addAttribute("time","2009");
11. Elementpro=request.addElement("pro");
12. pro.addAttribute("type","att");
13. pro.addAttribute("name","附件");
14. pro.addText("测试哈子");
16. Elementcd=request.addElement("pro");
17. cd.addAttribute("type","cd");
18. cd.addAttribute("name","特殊字符过滤");
19. cd.addCDATA("特殊字符");
21. //输出全部原始数据，在编译器中显示
22. OutputFormatformat=OutputFormat.createPrettyPrint();
23. format.setEncoding("GBK");//根据需要设置编码
24. XMLWriterwriter=newXMLWriter(System.out,format);
25. document.normalize();
26. writer.write(document);
27. writer.close();
28. //输出全部原始数据，并用它生成新的我们需要的XML文件
29. XMLWriterwriter2=newXMLWriter(newFileWriter(newFile(
30. "test.xml")),format);
31. writer2.write(document);//输出到文件
32. writer2.close();
33. }catch(UnsupportedEncodingExceptione){
34. //TodoAuto-generatedcatchblock
35. e.printstacktrace();
36. }catch(IOExceptione){
37. //TodoAuto-generatedcatchblock
38. e.printstacktrace();
39. }
40. }

public void createApplicationConfigXML(){
         //建立document对象
		 try {
				 Document document = DocumentHelper.createDocument();
				 Element root = document.addElement("root");//添加文档根
				 root.addComment("这个一个注释");//加入一行注释
				 Element request = root.addElement("request"); //添加root的子节点
				 request.addAttribute("type","cat");
				 request.addAttribute("flow","tong");
				 request.addAttribute("time","2009");
				 Element pro = request.addElement("pro");
				 pro.addAttribute("type","att");
				 pro.addAttribute("name","附件");
				 pro.addText("测试哈子");
				 
				 Element cd = request.addElement("pro");
				 cd.addAttribute("type","cd");
				 cd.addAttribute("name","特殊字符过滤");
				 cd.addCDATA("特殊字符");
				 
	             //输出全部原始数据，在编译器中显示
				 OutputFormat format = OutputFormat.createPrettyPrint();
				 format.setEncoding("GBK");//根据需要设置编码
				 XMLWriter writer = new XMLWriter(System.out,format);
				 document.normalize();
				 writer.write(document);  
				 writer.close();
				 // 输出全部原始数据，并用它生成新的我们需要的XML文件
				 XMLWriter writer2 = new XMLWriter(new FileWriter(new File(
	             "test.xml")),format);
				 writer2.write(document); //输出到文件
				 writer2.close();
		} catch (UnsupportedEncodingException e) {
			// Todo Auto-generated catch block
			e.printstacktrace();
		} catch (IOException e) {
			// Todo Auto-generated catch block
			e.printstacktrace();
		}
	}

-----------------------------------------------------------------
下面是解析和修改XML
XML文件内容如下：

Xml代码

1. <?xmlversion="1.0"encoding="utf-8"?>
2. <root>
3. <requesttype="Pending"flowType="GENERAL"flowName="报销流程"
4. docId="185647"flowId="16409"nodeName="报销人确认"wikId="58288"
5. sendId="1210040"userId="1210040"createDate="2009-12-03"
6. title="费用报销"flowCreaterId="1210040"nodeType="1"
7. bosTime="2009-12-0309:36:15">
8. <protype="att"></pro>
9. <protype="textarea"name="OP_bxryj"title="处理意见"need="true"></pro>
10. </request>
11. </root>

<?xml version="1.0" encoding="utf-8"?>
<root>
	<request type="Pending" flowType="GENERAL" flowName="报销流程"
		docId="185647" flowId="16409" nodeName="报销人确认" wikId="58288"
		sendId="1210040" userId="1210040" createDate="2009-12-03"
		title="费用报销 " flowCreaterId="1210040" nodeType="1"
		bosTime="2009-12-03 09:36:15">
		<pro type="att"></pro>
		<pro type="textarea" name="OP_bxryj" title="处理意见" need="true"></pro>
	</request>
</root>

修改

Java代码

1. publicStringgetApplcationConfigFromXMLtest(){
2. Stringvalue="";
3. try{
4. SAXReadersax=newSAXReader();
5. DocumentxmlDoc=sax.read(newFile(this.UBSSDIC_PATH));
6. Elementroot=xmlDoc.getRootElement();//根节点
7. Iteratorit=root.elementIterator();
8. while(it.hasNext()){
9. Elementele=(Element)it.next();
10. Attributeattribute=ele.attribute("type");
11. if(attribute.getStringValue().equals("Pending")){
12. attribute.setValue("sendread2");//修改属性节点的值
13. }
15. AttributeflowType=ele.attribute("flowType");
16. flowType.detach();//删除某个属性
18. ele.addAttribute("type","Pending");//添加一个属性节点
19. }
20. Elementnew_cdata=root.addElement("new_cdata");//添加一个元素
21. new_cdata.addCDATA("tst&ree");
23. Elementnew_ele=root.addElement("new_ele");//添加一个元素
24. new_ele.addText("33434343");
26. Elementobj=(Element)root.selectObject("//pro[@type='att']");//根据XPath查找元素
27. obj.setText("测试dddddd");//修改元素的值即text节点
28. //输出全部原始数据，在编译器中显示
29. OutputFormatformat=OutputFormat.createPrettyPrint();
30. format.setEncoding("GBK");
31. XMLWriterwriter=newXMLWriter(System.out,format);
32. writer.write(xmlDoc);
33. writer.close();
34. //输出全部原始数据，并用它生成新的我们需要的XML文件
35. XMLWriterwriter2=newXMLWriter(newFileWriter(newFile(
36. "test.xml")),format);
37. writer2.write(xmlDoc);//输出到文件
38. writer2.close();
39. }catch(DocumentExceptione){
40. System.out.println(e.getMessage());
41. e.printstacktrace();
42. }catch(IOExceptione){
43. e.printstacktrace();
44. }
45. returnvalue;
46. }

	public String getApplcationConfigFromXMLtest(){
		String value = "";
		try {
			SAXReader sax = new SAXReader();
			Document xmlDoc = sax.read(new File(this.UBSSDIC_PATH));
			Element root = xmlDoc.getRootElement();//根节点
			Iterator it = root.elementIterator();
			while(it.hasNext()){
				Element ele = (Element)it.next();
				Attribute attribute = ele.attribute("type");
				if(attribute.getStringValue().equals("Pending")){
					attribute.setValue("sendread2");//修改属性节点的值
				}
	
				Attribute flowType = ele.attribute("flowType");
				flowType.detach();//删除某个属性
				
				ele.addAttribute("type","Pending");//添加一个属性节点
			}
			Element new_cdata = root.addElement("new_cdata");//添加一个元素
			new_cdata.addCDATA("tst&ree");
			
			Element new_ele = root.addElement("new_ele");//添加一个元素
			new_ele.addText("33434343");

			Element obj = (Element)root.selectObject("//pro[@type='att']");//根据XPath查找元素
			obj.setText("测试dddddd");//修改元素的值 即text节点
              //输出全部原始数据，在编译器中显示
	           OutputFormat format = OutputFormat.createPrettyPrint();
	           format.setEncoding("GBK");
	           XMLWriter writer = new XMLWriter(System.out,format);
	           writer.write(xmlDoc);  
	           writer.close();
	           // 输出全部原始数据，并用它生成新的我们需要的XML文件
	           XMLWriter writer2 = new XMLWriter(new FileWriter(new File(
	             "test.xml")),format);
	           writer2.write(xmlDoc); //输出到文件
	           writer2.close();
		} catch (DocumentException e) {
			System.out.println(e.getMessage());
			e.printstacktrace();
		}catch(IOException e){
			e.printstacktrace();
		}
		return value ;
	}

解析

Java代码

1. publicvoidparseApplicationConfigXML(){
2. try{
3. SAXReadersax=newSAXReader();
4. DocumentxmlDoc=sax.read(newFile("E:\\20090316HPS\\Dom4jTest\\t.xml"));
5. Elementroot=xmlDoc.getRootElement();//根节点
6. Iteratorit=root.elementIterator("request");
7. while(it.hasNext()){
8. Elementrequest=(Element)it.next();
9. System.out.println(request.getName());
10. System.out.println(request.attributeValue("type"));
11. System.out.println(request.attributeValue("flow"));
12. System.out.println(request.attributeValue("time"));
14. }
15. System.out.println("-------------------------------------------");
16. Listlist=root.selectNodes("//pro");
17. for(inti=0;i<list.size();i++){
18. Elementpro=(Element)list.get(i);
19. System.out.println(pro.getName());
20. System.out.println(pro.attributeValue("type"));
21. System.out.println(pro.attributeValue("name"));
22. System.out.println(pro.getText());
23. System.out.println("+++++++++++++++++++++++++++++++++");
24. }
25. }catch(DocumentExceptione){
26. //TodoAuto-generatedcatchblock
27. e.printstacktrace();
28. }