xerces 中给Node添加属性及值的方法

 

 

 

DocumentBuilderFactory   factory=DocumentBuilderFactory.newInstance();
DocumentBuilder   builder=factory.newDocumentBuilder();
Document doc=builder.newDocument();
altNode = doc.createAttribute("alt");

提示异常,改正后代码如下

 

Node imgNode = nodeList.item(i);
   NamedNodeMap namedNodeMap = imgNode.getAttributes();
   Node srcNode = namedNodeMap.getNamedItem("src");
   Node altNode = namedNodeMap.getNamedItem("alt");
   
   //System.out.println(srcNode.get);
   if(altNode == null){
          Document doc = imgNode.getOwnerDocument();
    altNode = doc.createAttribute("alt");
   }
   altNode.setNodeValue("爱踢墙");
   namedNodeMap.setNamedItem(altNode);

 

 

 

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