如何將字符串轉換爲Java中的DOM文檔對象？

Question

我有一個像獲取XML和將XML元素轉換爲文檔對象並獲取已創建的元素值和屬性的情況

這是我試圖將字符串轉換爲DOM文檔對象

String xmlString = " <r><e>d</e></r>"; 
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 
DocumentBuilder builder = factory.newDocumentBuilder(); 
org.w3c.dom.Document document = builder.parse(new InputSource(new StringReader(xmlString)));  
TransformerFactory transformerFactory = TransformerFactory.newInstance(); 
Transformer transformer = transformerFactory.newTransformer(); 
DOMSource source = new DOMSource(document); 
StreamResult result = new StreamResult(new StringWriter()); 
transformer.transform(source, result); 
String str1 = result.getWriter().toString(); 
System.out.println(str1); 

但這種情況下是有效的唯一元素，而屬性 我們能做些什麼，如果

String xmlString = "<element attribname="value" attribname1="value1"> pcdata</element>" 

我們使用雙引號的ATT ribute值「值」。編譯器顯示錯誤

如果有任何xml編碼器和解碼器可以處理這種情況，

Answer 1

你可以嘗試

DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder(); 
InputSource is = new InputSource(); 
is.setCharacterStream(new StringReader("<root><nod1></node1></root>")); 

Document doc = db.parse(is); 

請參閱本http://www.java2s.com/Code/Java/XML/ParseanXMLstringUsingDOMandaStringReader.htm

Answer 2

要麼逃避雙引號\

String xmlString = "<element attribname=\"value\" attribname1=\"value1\"> pcdata</element>" 

，或者使用單引號代替

String xmlString = "<element attribname='value' attribname1='value1'> pcdata</element>" 

Answer 3

 public static void main(String[] args) { 
    final String xmlStr = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"+ 
          "<Emp id=\"1\"><name>Pankaj</name><age>25</age>\n"+ 
          "<role>Developer</role><gen>Male</gen></Emp>"; 
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 
     DocumentBuilder builder; 
     try 
     { 
      builder = factory.newDocumentBuilder(); 
      Document doc = builder.parse(new InputSource(new StringReader(xmlStr))); 

     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
    } 

Answer 4

DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder(); 
Document document = db.parse(new ByteArrayInputStream(xmlString.getBytes("UTF-8"))); //remove the parameter UTF-8 if you don't want to specify the Encoding type. 

即使XML結構很複雜，這對我來說也很好。

請確保您的xmlString對XML有效，注意轉義字符應該在前面添加「\」。

主要問題可能不是來自屬性。