SAX解析器XML援助

Question

我的XML是如下

<?xml version="1.0" encoding="utf-8" ?> 
<Data> 
<Item> 
<CategoryId>1</CategoryId> 
<Date>20121214</Date> 
<Source>[email protected]</Source> 
<ItemDetail> 
<quality1>Morning</quality1> 
<quality2>12010109Y</quality2> 
<quality3>2.00</quality3> 
<quality4>7.99</quality4> 
</ItemDetail> 
<ItemDetail> 
<quality1>Afternoon</quality1> 
<quality2>12010109B</quality2> 
<quality3>900</quality3> 
<quality4>83.50</quality4> 
</ItemDetail> 
<ItemDetail> 
<quality1>Dinner</quality1> 
<quality2>11271581Y</quality2> 
    <quality3>16.00</quality3> 
    <quality4>8.99</quality4> 
    </ItemDetail> 
    </Item> 


    <Item> 
    <CategoryId>2</CategoryId> 
    <Date>20121214</Date> 
    <Source>[email protected]</Source> 
    <ItemDetail> 
    <quality1>Morning</quality1> 
    <quality2>12010109Y</quality2> 
<quality3>2.00</quality3> 
    <quality4>7.99</quality4> 
</ItemDetail> 
</Item> 


<Item> 
<CategoryId>3</CategoryId> 
<Date>20121214</Date> 
<Source>[email protected]</Source> 
<ItemDetail> 
    <quality1>Afternoon</quality1> 
    <quality2>12010109B</quality2> 
    <quality3>900</quality3> 
    <quality4>83.50</quality4> 
</ItemDetail> 

</Item> 
</Data> 

这是我ParserClass

public class OrderXMLHandler extends DefaultHandler { 

    boolean currentElement = false; 
    String currentValue = ""; 




CategoryInfo itemdetail; 
CategoryInfo categoryInfo; 
ArrayList<CategoryInfo> List; 




public ArrayList<CategoryInfo> getList() { 
    return List; 
} 

public void startElement(String uri, String localName, String qName, 
    Attributes attributes) throws SAXException { 

    currentElement = true; 

/* if (qName.equals("Data")){ 
    //List = new ArrayList<CategoryInfo>(); 

} */ 
if (localName.equals("maintag")) 
{} 
else if (qName.equals("Item")) { 
    List = new ArrayList<CategoryInfo>(); 
    ; 
} 
else if (qName.equals("ItemDetail")) { 
    categoryInfo = new CategoryInfo(); 
} 
} 

public void endElement(String uri, String localName, String qName) 
throws SAXException { 

    currentElement = false; 

if (qName.equalsIgnoreCase("CategoryId")) 
    { 
    categoryInfo.setCategoryId(currentValue.trim()); 
    listId = currentValue.trim(); 
    } 
else if (qName.equalsIgnoreCase("Date")) 
    {//categoryInfo.setDate(currentValue.trim()); 
    date = currentValue.trim();} 
else if (qName.equalsIgnoreCase("Source")) 
    {//categoryInfo.setSource(currentValue.trim()); 
    source = currentValue.trim();} 

else if (qName.equalsIgnoreCase("quality1")) 
    categoryInfo.setQuality1(currentValue.trim()); 
else if (qName.equalsIgnoreCase("quality2")) 
    categoryInfo.setQuality2(currentValue.trim()); 
else if (qName.equalsIgnoreCase("quality3")) 
    categoryInfo.setQuality3(currentValue.trim()); 
else if (qName.equalsIgnoreCase("quality4")) 
    categoryInfo.setQuality4(currentValue.trim()); 
else if (qName.equalsIgnoreCase("ItemDetail")) 
    List.add(categoryInfo); 

currentValue = ""; 
} 

    public void characters(char[] ch, int start, int length) 
throws SAXException { 

if (currentElement) { 
    currentValue = currentValue + new String(ch, start, length); 
} 

    } 

    } 

我不认为我有它正确地分析了我的XML我做了。所以当我启动它时，数据只是容器元素，所以我不知道如何读取它，并将每个项目的下一个元素转到我的Arraylist中，该元素进入Class CateogoryInfo存储每个项目和信息。每个人都有标题和项目细节或多个项目细节。

Answer 1

ArrayList<HashMap<String, String>> menuItems = new 
ArrayList<HashMap<String, String>>(); 

     XMLParser parser = new XMLParser(); 
     String xml = parser.getXmlFromUrl(URL); // getting XML 
     Document doc = parser.getDomElement(xml); // getting DOM element 

     NodeList nl = doc.getElementsByTagName("Item"); 
     // looping through all item nodes <item> 
     for (int i = 0; i < nl.getLength(); i++) { 
      // creating new HashMap 
      HashMap<String, String> map = new HashMap<String, String>(); 
      Element e = (Element) nl.item(i); 
      // adding each child node to HashMap key => value 
      map.put(KEY_ID, parser.getValue(e, "CategoryId")); 
      map.put(KEY_NAME, parser.getValue(e, "Source")); 

       NodeList n2 = doc.getElementsByTagName("ItemDetail"); 
      for (int i = 0; i < n2.getLength(); i++) { 
      map.put(KEY_COST, "Rs." + parser.getValue(e, "quality1")); 
      map.put(KEY_DESC, parser.getValue(e, "quality2")); 
      } 
      // adding HashList to ArrayList 
      menuItems.add(map); 
     } 

使用这样的..我认为您的解决方案将在这里完成..