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  • Java调用XML的方法

    XML格式如下1:
    <?xml version="1.0" encoding="utf-8" ?>
    <!--CyPLATE Simulator Configuration-->
    <CyPLATE>  
          <BackgroundChar></BackgroundChar>  
          <ForegroundChar></ForegroundChar>  
          <TemplateWidth>170</TemplateWidth>  
          <TemplateHeigth>72</TemplateHeigth>  
          <WaitTimes>2000</WaitTimes>  
          <IntervalTimes>1000</IntervalTimes>  
          <FontName>default</FontName>  
          <FontSize>8</FontSize>
    </CyPLATE>
    实现方法:
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
            factory.setIgnoringElementContentWhitespace(true);
            factory.setNamespaceAware(false);
            factory.setValidating(false);
            try {
                DocumentBuilder builder = factory.newDocumentBuilder();
                File xmlFile = new File("/home/creat/SYS/CYPLATE/CONFIG"); 
                Document doc = builder.parse(xmlFile);
                Element root = doc.getDocumentElement();
                BackgroundChar = root.getElementsByTagName("BackgroundChar").item(0).getFirstChild().getNodeValue();// BackgroundChar
                ForegroundChar =root.getElementsByTagName("ForegroundChar").item(0).getFirstChild().getNodeValue();// ForegroundChar
                TemplateWidth =Integer.valueOf(root.getElementsByTagName("TemplateWidth").item(0).getFirstChild().getNodeValue());// TemplateWidth
                TemplateHeigth =Integer.valueOf(root.getElementsByTagName("TemplateHeigth").item(0).getFirstChild().getNodeValue());// TemplateHeigth
                WaitTimes = Integer.valueOf(root.getElementsByTagName("WaitTimes").item(0).getFirstChild().getNodeValue());// WaitTimes
                IntervalTimes = Integer.valueOf(root.getElementsByTagName("IntervalTimes").item(0).getFirstChild().getNodeValue());// IntervalTimes
                FontName= root.getElementsByTagName("FontName").item(0).getFirstChild().getNodeValue();//FontName     
                FontSize= Integer.valueOf(root.getElementsByTagName("FontSize").item(0).getFirstChild().getNodeValue());//FontSize
            } catch (Exception e) {
                // TODO: handle exception
                e.printStackTrace();
            }
    XML格式如下2:
    <?xml version="1.0" encoding="GB2312" standalone="no"?>   
    <books>   
        <book email="zhoujunhui">   
            <name>rjzjh</name>   
            <price>jjjjjj</price>   
        </book>   
    </books>   
    DocumentBuilderFactory domfac = DocumentBuilderFactory.newInstance();    
            try {    
                DocumentBuilder domBuilder = domfac.newDocumentBuilder();    
                InputStream is = new FileInputStream(new File("D:/test1.xml"));    
                Document doc = domBuilder.parse(is);    
                Element root = doc.getDocumentElement();    
                NodeList books = root.getChildNodes();    
                if(books!=null){    
                    for (int i = 0; i < books.getLength(); i++) {    
                        Node book = books.item(i);    
                         if(book.getNodeType()==Node.ELEMENT_NODE) {    
                                //(7)取得节点的属性值    
                                String email=book.getAttributes().getNamedItem("email").getNodeValue();    
                                System.out.println(email);    
                                //注意,节点的属性也是它的子节点。它的节点类型也是Node.ELEMENT_NODE    
                                
    //(8)轮循子节点    
                                for(Node node=book.getFirstChild();node!=null;node=node.getNextSibling()) {    
                                    if(node.getNodeType()==Node.ELEMENT_NODE) {    
                                        if(node.getNodeName().equals("name")) {    
                                            String name=node.getNodeValue();    
                                            String name1=node.getFirstChild().getNodeValue();    
                                            System.out.println(name);    
                                            System.out.println(name1);    
                                        }    
                                        if(node.getNodeName().equals("price")) {    
                                            String price=node.getFirstChild().getNodeValue();    
                                            System.out.println(price);    
                                        }    
                                    }    
                                }    
                         }    
                    }    
                }    
            } catch (Exception e) {    
                // TODO Auto-generated catch block    
                e.printStackTrace();    
            }
    1)得到 DOM 解析器的工厂实例      
    DocumentBuilderFactory domfac=DocumentBuilderFactory.newInstance(); 

    2)然后从 DOM 工厂获得 DOM 解析器 
    DocumentBuilder dombuilder=domfac.newDocumentBuilder(); 

    3 )把要解析的 XML 文档转化为输入流,以便 DOM 解析器解析它 
    InputStream is= new  FileInputStream("test1.xml");         

    ( 4 )解析 XML 文档的输入流,得到一个 Document 

     Document doc=dombuilder.parse(is); 

    ( 5 )得到 XML 文档的根节点 

    Element root=doc.getDocumentElement(); 

    ( 6 )得到节点的子节点 

      NodeList books=root.getChildNodes(); 
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  • 原文地址:https://www.cnblogs.com/wequst/p/2434695.html
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