XML之DOM4、JDom等解析方式

1、生成XML

Java代码  

1. public void createApplicationConfigXML(){   
2.          //建立document对象  
3.          try {   
4.                  Document document = DocumentHelper.createDocument();   
5.                  Element root = document.addElement("root");//添加文档根  
6.                  root.addComment("这个一个注释");//加入一行注释  
7.                  Element request = 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.                  Element pro = request.addElement("pro");   
12.                  pro.addAttribute("type", "att");   
13.                  pro.addAttribute("name", "附件");   
14.                  pro.addText("测试哈子");   
15.                     
16.                  Element cd = 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");   
20.                     
21.                  //输出全部原始数据，在编译器中显示  
22.                  OutputFormat format = OutputFormat.createPrettyPrint();   
23.                  format.setEncoding("GBK");//根据需要设置编码  
24.                  XMLWriter writer = new XMLWriter(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.                  XMLWriter writer2 = new XMLWriter(new FileWriter(new File(   
30.                  "test.xml")), format);   
31.                  writer2.write(document); //输出到文件  
32.                  writer2.close();   
33.         } catch (UnsupportedEncodingException e) {   
34.             // TODO Auto-generated catch block  
35.             e.printStackTrace();   
36.         } catch (IOException e) {   
37.             // TODO Auto-generated catch block  
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 blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}

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下面是解析和修改XML
XML文件内容如下：

Xml代码  

1. <?xml version="1.0" encoding="utf-8"?>  
2. <root>  
3.     <request type="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="2009-12-03 09:36:15">  
8.         <pro type="att"></pro>  
9.         <pro type="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. public String getApplcationConfigFromXMLTest(){   
2.     String value = "";   
3.     try {   
4.         SAXReader sax = new SAXReader();   
5.         Document xmlDoc = sax.read(new File(this.UBSSDIC_PATH));   
6.         Element root = xmlDoc.getRootElement();//根节点  
7.         Iterator it = root.elementIterator();   
8.         while(it.hasNext()){   
9.             Element ele = (Element)it.next();   
10.             Attribute attribute = ele.attribute("type");   
11.             if(attribute.getStringValue().equals("Pending")){   
12.                 attribute.setValue("sendread2");//修改属性节点的值  
13.             }   
14.   
15.             Attribute flowType = ele.attribute("flowType");   
16.             flowType.detach();//删除某个属性  
17.                
18.             ele.addAttribute("type", "Pending");//添加一个属性节点  
19.         }   
20.         Element new_cdata = root.addElement("new_cdata");//添加一个元素  
21.         new_cdata.addCDATA("tst&ree");   
22.            
23.         Element new_ele = root.addElement("new_ele");//添加一个元素  
24.         new_ele.addText("33434343");   
25.   
26.         Element obj = (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.            OutputFormat format = OutputFormat.createPrettyPrint();   
30.            format.setEncoding("GBK");   
31.            XMLWriter writer = new XMLWriter(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.            XMLWriter writer2 = new XMLWriter(new FileWriter(new File(   
36.              "test.xml")), format);   
37.            writer2.write(xmlDoc); //输出到文件  
38.            writer2.close();   
39.     } catch (DocumentException e) {   
40.         System.out.println(e.getMessage());   
41.         e.printStackTrace();   
42.     }catch(IOException e){   
43.         e.printStackTrace();   
44.     }   
45.     return value ;   
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. public void parseApplicationConfigXML(){   
2.     try {   
3.         SAXReader sax = new SAXReader();   
4.         Document xmlDoc = sax.read(new File("E:\\20090316HPS\\Dom4jTest\\t.xml"));   
5.         Element root = xmlDoc.getRootElement();//根节点  
6.         Iterator it = root.elementIterator("request");   
7.         while(it.hasNext()){   
8.             Element request = (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"));   
13.                
14.         }   
15.         System.out.println("-------------------------------------------");   
16.         List list = root.selectNodes("//pro");   
17.         for(int i = 0; i < list.size(); i++){   
18.             Element pro = (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 (DocumentException e) {   
26.         // TODO Auto-generated catch block  
27.         e.printStackTrace();   
28.     }