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我有一个从 web 服务调用获取 xml 响应的 Android 应用程序。我正在尝试使用 DOM 解析器解析 xml。我无法获取 StartDate 标记的值以及调用标记中的其他标记。我出错的任何想法。当我从 startDate 记录值时，它是空的。谢谢。

public class DomParser {

    private static final String TAG = DomParser.class.getSimpleName();
    DocumentBuilderFactory builderFactory;
    DocumentBuilder builder;
     Document document;

    public DomParser() {
        super();
        Log.e(TAG, "inside domparser constructor");
        builderFactory = DocumentBuilderFactory.newInstance();
        document = null;
        try {
            builder = builderFactory.newDocumentBuilder();
            Log.e(TAG, "built the dom factory");
        } catch (ParserConfigurationException e) {
            e.printStackTrace();  
        }
    }// end of constructor


    public void parseXmlString(String str){

        try {
            String s = str.replace("&lt;", "<");
            String t = s.replace("&gt;", ">");
            document = builder.parse( new InputSource(new StringReader(t))); 
            Log.e(TAG, "document = " + document);
            Log.e(TAG, "str = " + t);
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        Log.e(TAG, "about to parse the rootElement");
        Element rootElement = document.getDocumentElement();
        NodeList nodes = rootElement.getChildNodes();

        Node rota = nodes.item(0);
        NodeList callList = rota.getChildNodes();

        for(int i = 0; i < callList.getLength(); i++){

            Node call = callList.item(i);
            NodeList callChildrenList = call.getChildNodes();

            for(int j = 0; j < callChildrenList.getLength(); j++){
                Node callChild = callChildrenList.item(j);
                if(callChild instanceof Element){
                    //a child element to process
                    Element child = (Element) callChild;
                    String startDate = child.getAttribute("StartDate"); 
                    Log.e(TAG, "element StartDate = " + startDate);
                  }
            }

        }



    }//end of parseXmlString

}

.

  <?xml version="1.0" encoding="utf-8"?>
    10-05 15:49:17.680: E/DomParser(31495): <string xmlns="http://tempuri.org/"><Rota><Call><StartDate>2012-10-05T07:00:00+01:00</StartDate><EndDate>2012-10-05T07:25:00+01:00</EndDate><Duration>25</Duration><CallStatusID>1</CallStatusID><CallStatusName>Completed</CallStatusName><ClientSurname>Ebbs</ClientSurname><ClientForename>Vera</ClientForename><NeedName>Assist With Dressing, Laundry, Leave A Drink, Leave A Sandwich For Later, Make A Hot Drink, Prepare Breakfast, Shower, TIME BAND - Early Breakfast</NeedName><CarerAwayReason /><CallID>47418572-73a1-4dab-bc24-739c122b2b25</CallID><ActualTimeIn>07:30</ActualTimeIn><ActualTimeOut>07:49</ActualTimeOut></Call><Call><StartDate>2012-10-05T07:30:00+01:00</StartDate><EndDate>2012-10-05T08:00:00+01:00</EndDate><Duration>30</Duration><CallStatusID>1</CallStatusID><CallStatusName>Completed</CallStatusName><ClientSurname>Brown</ClientSurname><ClientForename>Margaret</ClientForename><NeedName>Careline, Diabetic Type 2, Empty Commode, KEY SAFE, Leave A Drink, Make A Hot Drink, Meds - Level II Administer, Prepare Snack, TIME BAND - Early Bed</NeedName><CarerAwayReason /><CallID>14f4f796-c7a6-4942-9d91-e9e7a40394f5</CallID><ActualTimeIn>08:00</ActualTimeIn><ActualTimeOut>08:21</ActualTimeOut></Call><Call><StartDate>2012-10-05T08:00:00+01:00</StartDate><EndDate>2012-10-05T08:40:00+01:00</EndDate><Duration>40</Duration><CallStatusID>1</CallStatusID><CallStatusName>Completed</CallStatusName><ClientSurname>Weaver</ClientSurname><ClientForename>Margaret</ClientForename><NeedName>KEY SAFE, Morning Call - Get Up And Breakfast, Personal Care</NeedName><CarerAwayReason /><CallID>2a7e6c70-ee2c-4657-a313-a18b87a766ed</CallID><ActualTimeIn>08:35</ActualTimeIn><ActualTimeOut>09:13</ActualTimeOut></Call><Call><StartDate>2012-10-05T09:00:00+01:00</StartDate><EndDate>2012-10-05T09:20:00+01:00</EndDate><Duration>20</Duration><CallStatusID>3</CallStatusID><CallStatusName>NCR</CallStatusName><ClientSurname>Howarth</ClientSurname><ClientForename>Edith</ClientForename><NeedName>Change Incontinence Pads, KEY SAFE, Make Bed / Change As Neccessary, Meds - Level II Administer, Personal Care, Prepare Breakfast, TIME BAND - Late Breakfast</NeedName><CarerAwayReason /><CallID>383c9be6-4cbe-459a-92ed-5dc309a0bffb</CallID></Call><Call><StartDate>2012-10-05T09:00:00+01:00</StartDate><EndDate>2012-10-05T09:30:00+01:00</EndDate><Duration>30</Duration><CallStatusID>1</CallStatusID><CallStatusName>Completed</CallStatusName><ClientSurname>Kastik</ClientSurname><ClientForename>Lydia</ClientForename><NeedName>Keys Needed, Leave A Drink, Leave A Sandwich For Later, Make A Hot Drink, Make Bed / Change As Neccessary, Medication Prompt, Meds - Level II Administer, Personal Care, TIME BAND - Early Breakfast</NeedName><CarerAwayReason /><CallID>f4cc1f96-ef65-4231-9e03-0b8263b04d27</CallID><ActualTimeIn>09:28</ActualTimeIn><ActualTimeOut>09:57</ActualTimeOut></Call><Call><StartDate>2012-10-05T10:30:00+01:00</StartDate><EndDate>2012-10-05T11:00:00+01:00</EndDate><Duration>30</Duration><CallStatusID>1</CallStatusID><CallStatusName>Completed</CallStatusName><ClientSurname>Terett</ClientSurname><ClientForename>Mamie</ClientForename><NeedName>Assist With Dressing, Meds - Self Medicating, Morning Call, Personal Care, Strip Wash, TIME BAND - Late Breakfast</NeedName><CarerAwayReason /><CallID>03f52182-b9ff-4fa9-9b71-1a20b8bbeeaa</CallID><ActualTimeIn>10:10</ActualTimeIn><ActualTimeOut>10:57</ActualTimeOut></Call><Call><StartDate>2012-10-05T12:00:00+01:00</StartDate><EndDate>2012-10-05T12:15:00+01:00</EndDate><Duration>15</Duration><CallStatusID>1</CallStatusID><CallStatusName>Completed</CallStatusName><ClientSurname>Garland</ClientSurname><ClientForename>Mavis</ClientForename><NeedName>Empty Catheter Bag, Medication Prompt, Meds - Level II Administer, TIME BAND - Early Lunch, Toiletting / Commode</NeedName><CarerAwayReason /><CallID>802d8adf-3a80-40bd-be91-f29db7c1291e</CallID><ActualTimeIn>11:16</ActualTimeIn><ActualTimeOut>11:38</ActualTimeOut></Call><Call><StartDate>2012-10-05T12:30:00+01:00</StartD

[更新]

Element rootElement = document.getDocumentElement();
        NodeList nodes = rootElement.getChildNodes();

        Node rota = nodes.item(0);
        NodeList callList = rota.getChildNodes();

        for(int i = 0; i < callList.getLength(); i++){

            Node call = callList.item(i);
            NodeList callChildrenList = call.getChildNodes();


            for(int j = 0; j < callChildrenList.getLength(); j++){
                Node callChild = callChildrenList.item(j);

                Log.e(TAG, "callChild name = " + callChild.getNodeName());


            }
4

2 回答 2

2

基于您的新示例代码的类似内容

// HERE LOOP TO FIND THE NODE LIKE YOU HAVE DONE IN YOUR EXAMPLE
// WHERE YOU HAVE callChild.getNodeName() AND LOOK FOR THE ONE THAT IS "StartDate"
// ASSUMING startDateNode HERE IS THE NODE YOU WANT

    // GET THE CHILD NODES AND LOOK FOR THE TEXT NODE  
    NodeList nList = startDateNode.getChildNodes();
    for (int i=0; i < nList.getLength(); i++) {
       Node tmpNode = nList.item(i);
       if (tmpNode.getNodeType() == Node.TEXT_NODE) {
          String dateStr = ((CharacterData)tmpNode).getData();
           // NOW YOU HAVE THE CHARACTER DATA
          // DO SOMETHING WITH THE VALUE
       }
    }
于 2012-10-05T15:16:49.633 回答
1

检查here以获得我在这样的代码之一中实现的正确想法。

于 2012-10-05T16:15:44.363 回答