我與Java和SimpleXML的SimpleXML很容易解決問題。我做錯了什麼?
工作,我需要解析用SimpleXML這個XML文件:
<magazine title="N˙mero 1" id="1">
<description>yutyutyu</description>
<miniature>http://web.com/scripts/getImage.php?idMagazine=1&resource=miniature.jpg</miniature>
<summary>2</summary>
<pages>
<page src="http://web.com/scripts/getImage.php?idMagazine=1&resource=page_001.jpg" id="1" thumbnail="http://web.com/scripts/getImage.php?idMagazine=1&resource=thumbnail_001.jpg">
<areas>
<area id="1">
<top>188</top>
<left>204</left>
<width>399</width>
<height>319</height>
<action type="openBrowser">http://www.web.com</action>
</area>
<area id="2">
<top>188</top>
<left>204</left>
<width>399</width>
<height>319</height>
<action type="openBrowser">http://www.web.com</action>
</area>
</areas>
</page>
<page src="http://web.com/scripts/getImage.php?idMagazine=1&resource=page_002.jpg" id="2" thumbnail="web.com/scripts/getImage.php?idMagazine=1&resource=thumbnail_002.jpg"/>
<page src="http://web.com/scripts/getImage.php?idMagazine=1&resource=page_003.jpg" id="3" thumbnail="web.com/scripts/getImage.php?idMagazine=1&resource=thumbnail_003.jpg"/>
</pages>
</magazine>
我得到這個異常:
03-22 16:02 :35.072:WARN/System.err(1931):org.simpleframework.xml.core.ValueRequiredException:無法滿足@ org.simpleframework.xml.ElementList(data = false,empty = true,entry =,inline = false,name =,required = true,type = void)public java.util.ArrayList com.Magazine.Page.areas for com.Magazi ne.Page at line 1
雜誌有一個頁面數組,每個頁面都有一個區域數組,每個區域都有一個動作類,它有更多的內容。問題必須在區域數組上,所以它在Page類中。
@Root (name="magazine")
public class FullMagazine {
@Attribute
String title;
@Attribute
String id;
@Element
String description;
@Element
String miniature;
@Element
int summary;
@ElementList
public ArrayList<Page> pages;
public String getTitle() {
return title;
}
public String getId() {
return id;
}
public String getDescription() {
return description;
}
public Bitmap getMiniature() {
return Util.getRemoteBitmap(miniature);
}
public static FullMagazine Load(String xml){
Serializer serializer = new Persister();
try{
return serializer.read(FullMagazine.class, xml);
}catch (Exception e) {e.printStackTrace();}
return null; //si llega aquÌ es que ha fallado.
}
}
@Root
public class Page {
@Attribute
String src;
@Attribute
String id;
@Attribute
String thumbnail;
@ElementList
public ArrayList<Area> areas;
}
@Root
public class Area {
@Attribute
String id;
@Element
int top;
@Element
int left;
@Element
int width;
@Element
int height;
@Element
Action action;
}
@Root
public class Action {
@Attribute
String type;
String action;
}
就是這樣,顯然如果'required'屬性設置爲'true',那麼如果沒有找到給定的節點,則該庫會引發異常。謝謝! – 2012-03-22 15:58:00
Congratz @NullPointerException! – 2017-05-23 16:49:42