出于某种原因，我为Map创建了一些类，用pyxeledit创建了它，但是当我运行它时，除了在一个空白窗口中的角色之外，我什么也得不到。我不知道为什么我不能绘制Map。
这就是代码，我真的不明白为什么它不读取xml文件。

public class TileManager { public static ArrayList tm;
public TileManager()
{
    tm=new ArrayList<TileMap>();
}
public TileManager(String path)
{
    tm=new ArrayList<TileMap>();
    addTileMap(path,64,64);
}
private void addTileMap(String path, int blockWidth, int blockHeight)
{
    String imagePath;
    int width=0;
    int height=0;
    int tileWidth;
    int tileHeight;
    int tileCount;
    int tileColumns;
    int layers=0;
    Sprite sprite;
    String[] data=new String[10];
    try{
        DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder=builderFactory.newDocumentBuilder();
        Document doc= builder.parse(new File(getClass().getClassLoader().getResource(path).toURI()));
        doc.getDocumentElement().normalize();
        NodeList list=doc.getElementsByTagName("tileset");
        Node node = list.item(0);
        Element eElement = (Element) node;
        imagePath=eElement.getAttribute("name");
        tileWidth=Integer.parseInt(eElement.getAttribute("tilewidth"));
        tileHeight=Integer.parseInt(eElement.getAttribute("tileheight"));
        tileCount=Integer.parseInt(eElement.getAttribute("tilecount"));
        tileColumns=Integer.parseInt(eElement.getAttribute("columns"));
        sprite=new Sprite("tile/"+imagePath+".png", tileWidth,tileHeight);
        list=doc.getElementsByTagName("layer");
        layers=list.getLength();
        for(int i=0;i<layers;i++)
        {
            node=list.item(i);
            eElement=(Element) node;
            if(i<=0)
            {
                width=Integer.parseInt(eElement.getAttribute("width"));
                height=Integer.parseInt(eElement.getAttribute("height"));
            }
            data[i]=eElement.getElementsByTagName("data").item(0).getTextContent();
            if(i>= 1)
            {
                tm.add(new TileMapNorm(data[i],sprite,width,height,blockWidth,blockHeight,tileColumns));
            }
            else
            {
                tm.add(new TileMapObj(data[i],sprite,width,height,blockWidth,blockHeight,tileColumns));
            }
        }
    } catch(Exception e)
    {
        System.out.println("EROOR - TILEMANAGER: can not read tilemap");
    }
}

public void render(Graphics2D g)
{
    for(int i=0; i<tm.size(); ++i)
    {
        tm.get(i).render(g);
    }
}
}

这也是我要读的xml文件

<?xml version="1.0" encoding="UTF-8"?>
<map version="1.5" tiledversion="1.5.0" orientation="orthogonal" renderorder="right-down" width="50" height="50" tilewidth="16" tileheight="16" infinite="0" nextlayerid="3" nextobjectid="1">
 <tileset firstgid="1" name="0x72_16x16DungeonTileset_walls.v1.tmx" tilewidth="16" tileheight="16" tilecount="625" columns="25">
  <image source="../../Facultate An2/Java/ProiectJava/0x72_16x16DungeonTileset_walls.v1.tmx.png" width="400" height="400"/>
 </tileset>
 <layer id="2" name="Tile Layer 2" width="50" height="50">
  <data encoding="csv">