Question

我想使用DOM Parser阅读以下XML文件。

 <?xml version="1.0" encoding="UTF-8"?>
<CCL>
    <COUNTRY>
       <COUNTRYNAME>INDIA</COUNTRYNAME>
        <CITY>
            <CITYNAME>NOIDA</CITYNAME>
            <LOCALITY>SEC 22^SEC 24^SEC 55</LOCALITY>
        </CITY>
        <CITY>
            <CITYNAME>DELHI</CITYNAME>
            <LOCALITY>MAYUR VIHAR^PATPARGANJ^CHANDNI CAHUK</LOCALITY>
        </CITY>
    </COUNTRY>
    <COUNTRY>
       <COUNTRYNAME>SINGAPORE</COUNTRYNAME>
        <CITY>
            <CITYNAME>TIONG BAHRU</CITYNAME>
            <LOCALITY>BLK 150^BLK 154^BLK 129</LOCALITY>
        </CITY>
        <CITY>
            <CITYNAME>TANJONG PAGAR</CITYNAME>
            <LOCALITY>MAXWELL ROAD^CECILL STREET^AXA TOWER</LOCALITY>
        </CITY>
    </COUNTRY>
</CCL>

我的java代码是

public void ReadXMlFile(File f) throws ParserConfigurationException, SAXException, IOException
    {    
                log.info("Reading log file" + f.getName() + ", from:  "+ f.getAbsolutePath());      
                File fXmlFile = f;
                DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
                DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
                Document doc = dBuilder.parse(fXmlFile);
                doc.getDocumentElement().normalize();

                log.info("Root element :" + doc.getDocumentElement().getNodeName());
                NodeList nList = doc.getElementsByTagName("COUNTRY");
                log.info("-----------------------");

                for (int temp = 0; temp < nList.getLength(); temp++) {

                   Node nNode = nList.item(temp);
                   if (nNode.getNodeType() == Node.ELEMENT_NODE) {

                      Element eElement = (Element) nNode;

                      log.info("COUNTRYNAME: " + getTagValue("COUNTRYNAME", eElement));

                        NodeList nodel= eElement.getChildNodes();
                        for(int tempcity=0; tempcity< nodel.getLength() ; tempcity++)
                        {
                            Node nNode_1 = nodel.item(tempcity);
                    if (nNode_1.getNodeType() == Node.ELEMENT_NODE) {
                    Element eElement_1 = (Element) nNode_1;

     log.info("CITYNAME: " + getTagValue("CITYNAME", eElement));
    log.info("LOCALITY: " + getTagValue("LOCALITY", eElement));

                               }


                        }



                   }

                }

    }

private static String getTagValue(String sTag, Element eElement) {
            NodeList nlList = eElement.getElementsByTagName(sTag).item(0).getChildNodes();

                Node nValue = (Node) nlList.item(0);

            return nValue.getNodeValue();
          }

我得到了关注输出

 INFO [http-8080-1] (UtilityClass.java:41) - Root element :CCL
 INFO [http-8080-1] (UtilityClass.java:43) - -----------------------
 INFO [http-8080-1] (UtilityClass.java:52) - COUNTRYNAME: INDIA
 INFO [http-8080-1] (UtilityClass.java:61) - CITYNAME: NOIDA
 INFO [http-8080-1] (UtilityClass.java:62) - LOCALITY: SEC 22^SEC 24^SEC 55
 INFO [http-8080-1] (UtilityClass.java:61) - CITYNAME: NOIDA
 INFO [http-8080-1] (UtilityClass.java:62) - LOCALITY: SEC 22^SEC 24^SEC 55
 INFO [http-8080-1] (UtilityClass.java:61) - CITYNAME: NOIDA
 INFO [http-8080-1] (UtilityClass.java:62) - LOCALITY: SEC 22^SEC 24^SEC 55
 INFO [http-8080-1] (UtilityClass.java:52) - COUNTRYNAME: SINGAPORE
 INFO [http-8080-1] (UtilityClass.java:61) - CITYNAME: TIONG BAHRU
 INFO [http-8080-1] (UtilityClass.java:62) - LOCALITY: BLK 150^BLK 154^BLK 129
 INFO [http-8080-1] (UtilityClass.java:61) - CITYNAME: TIONG BAHRU
 INFO [http-8080-1] (UtilityClass.java:62) - LOCALITY: BLK 150^BLK 154^BLK 129
 INFO [http-8080-1] (UtilityClass.java:61) - CITYNAME: TIONG BAHRU
 INFO [http-8080-1] (UtilityClass.java:62) - LOCALITY: BLK 150^BLK 154^BLK 129

我想阅读每个国家/地区的城市标签中的所有条目。

**

我可以阅读国家标签，但我不知道如何阅读CITY，每个国家/地区的CITYNAME。请帮帮我

**

任何人都可以帮我解决这个问题

Answer 1

您似乎只是引用了来自CITYNAME＆amp;的错误Element。 LOCALITY日志消息..

尝试更改：

 if (nNode_1.getNodeType() == Node.ELEMENT_NODE) {
                    Element eElement_1 = (Element) nNode_1;

     log.info("CITYNAME: " + getTagValue("CITYNAME", eElement));
    log.info("LOCALITY: " + getTagValue("LOCALITY", eElement));

 }

要：

 if (nNode_1.getNodeType() == Node.ELEMENT_NODE) {
                    Element eElement_1 = (Element) nNode_1;

     log.info("CITYNAME: " + getTagValue("CITYNAME", eElement_1));
    log.info("LOCALITY: " + getTagValue("LOCALITY", eElement_1));

 }

我无法确定，因为我看不到getTagValue（..）的定义，但看起来很可能

HTH

用于读取XML文件的DOM解析器（编辑）

1 个答案: