java dom修改xml文件

Question

我想將一些節點添加到現有的xml文件中。 的xml文件的結構如下：

<?xml version="1.0" encoding="utf-8" standalone="no"?><?xml-stylesheet type="text/xsl" href="new2.xsl"?><patients> 
    <patient> 
    <stoixeia_astheni> 
     <arithmos_eksetasis>1</arithmos_eksetasis> 
     <imerominia_eksetasis>11/12/2005</imerominia_eksetasis> 
     <amka>14385</amka> 
     <surname>aaa</surname> 
     <name>aaa</name> 
     <onoma_patros>aaa</onoma_patros> 
     <imgennisis>15/03/1984</imgennisis> 
     <diagnosi>aaa</diagnosi> 
     <famagogi>depon</famagogi> 
    </stoixeia_astheni> 
    <stoixeia_epikoinonias> 
     <dieuthinsi>aaa</dieuthinsi> 
     <takodikas>11474</takodikas> 
     <perioxi>aaa</perioxi> 
     <stathero>2106425246</stathero> 
     <kinito>-</kinito> 
    </stoixeia_epikoinonias> 
    <loipa_stoixeia> 
     <fylo>aaa</fylo> 
     <oikkatastasi>aaa</oikkatastasi> 
     <epaggelma>aaa</epaggelma> 
     <istoriko>-</istoriko> 
     <sxolia>-</sxolia> 
    </loipa_stoixeia> 
    </patient> 
    <patient> 
    <stoixeia_astheni> 
     <arithmos_eksetasis>2</arithmos_eksetasis> 
     <imerominia_eksetasis>12/12/2005</imerominia_eksetasis> 
     <amka>14325</amka> 
     <surname>aaa</surname> 
     <name>aaa</name> 
     <onoma_patros>aaa</onoma_patros> 
     <imgennisis>15/03/1984</imgennisis> 
     <diagnosi>aaa</diagnosi> 
     <famagogi>depon</famagogi> 
    </stoixeia_astheni> 
    <stoixeia_epikoinonias> 
     <dieuthinsi>aaa</dieuthinsi> 
     <takodikas>11474</takodikas> 
     <perioxi>aaa</perioxi> 
     <stathero>2106425246</stathero> 
     <kinito>-</kinito> 
    </stoixeia_epikoinonias> 
    <loipa_stoixeia> 
     <fylo>aaa</fylo> 
     <oikkatastasi>aaa</oikkatastasi> 
     <epaggelma>aaa</epaggelma> 
     <istoriko>-</istoriko> 
     <sxolia>-</sxolia> 
    </loipa_stoixeia> 
    </patient> 
</patients> 

我想是這樣的：

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
    // TODO Auto-generated method stub 
    String[] elem; 
    elem = new String[20]; 
    elem [1]="arithmos_eksetasis"; 
    elem [2]="imerominia_eksetasis"; 
    elem [3]="amka"; 
    elem [4]="surname"; 
    elem [5]="name"; 
    elem [6]="onoma_patros"; 
    elem [7]="imgennisis"; 
    elem [8]="diagnosi"; 
    elem [9]="famagogi"; 
    elem [10]="dieuthinsi"; 
    elem [11]="takodikas"; 
    elem [12]="perioxi"; 
    elem [13]="stathero"; 
    elem [14]="kinito"; 
    elem [15]="fylo"; 
    elem [16]="oikkatastasi"; 
    elem [17]="epaggelma"; 
    elem [18]="istoriko"; 
    elem [19]="sxolia"; 

    try { 
     String filepath = "C:\\Users\\Chris\\Desktop\\tsiou\\workspace\\askhsh3\\WebContent\\askisi3.xml"; 

     DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance(); 
     DocumentBuilder docBuilder = docFactory.newDocumentBuilder(); 
     Document doc = docBuilder.parse(filepath); 


     //Node staff = doc.getElementsByTagName("staff").item(0); 


     // append a new node to staff 
     Document doc2 = docBuilder.newDocument(); 
     Element patient = doc2.createElement("patient"); 

     Element st_as = doc2.createElement("stoixeia_astheni"); 
     for(int i=1;i<=9;i++){ 
      Element tmp= doc2.createElement(elem[i]); 
      tmp.appendChild(doc2.createTextNode("aaa")); 
      st_as.appendChild(tmp); 
     } 
     Element st_ep = doc2.createElement("stoixeia_epikoinonias"); 
     for(int i=10;i<=15;i++){ 
      Element tmp= doc2.createElement(elem[i]); 
      tmp.appendChild(doc2.createTextNode("aaa")); 
      st_ep.appendChild(tmp);  
     } 
     Element st_lp = doc2.createElement("loipa_stoixeia"); 
     for(int i=16; i<=19;i++){ 
      Element tmp= doc2.createElement(elem[i]); 
      tmp.appendChild(doc2.createTextNode("aaa")); 
      st_lp.appendChild(tmp);  
     } 
     patient.appendChild(st_as); 
     patient.appendChild(st_ep); 
     patient.appendChild(st_lp); 
     doc.importNode(patient,true); 

     TransformerFactory tf = TransformerFactory.newInstance(); 
     Transformer trans = tf.newTransformer(); 
     OutputStream out = new FileOutputStream(filepath); 
     trans.transform(new DOMSource(doc), new StreamResult(out)); 

     } catch (ParserConfigurationException pce) { 
     pce.printStackTrace(); 
     } catch (TransformerException tfe) { 
     tfe.printStackTrace(); 
     } catch (IOException ioe) { 
     ioe.printStackTrace(); 
     } catch (SAXException sae) { 
     sae.printStackTrace(); 
     } 


    response.setContentType("text/html"); 
    PrintWriter pw = response.getWriter(); 

} 

結果是，沒有運氣（在XML不改變）。

當我試圖trans.transform(new DOMSource(patient), new StreamResult(out));我可以看到新的patient..i還試圖doc.adoptNode(patient)

任何意見將是有用的

Answer 1

在地方doc.importNode(patient,true);，試試這個：

//Find existing parent node 
Node patientsNode = doc.getElementsByTagName("patients").item(0); 

//append the new child node 
patientsNode.appendChild(patient); 

我我使用類似的代碼，它完美的作品。