在地图内容中添加OSM服务并使用streamrenderer类的油漆方法后，无限运行

Question

当我在MAPCONTENT中添加OSM服务时

mapContent.addLayer(new AsyncTileLayer(new OSMService("Mapnik", "http://tile.openstreetmap.org/")));

，然后使用流媒体类的油漆方法时，会有无限运行。 更确切地说，无限运行发生在流renderer类文件的第563行中：

painterFuture.get();

我调用油漆方法将我添加到MAPCONTENT中的内容，即在此处和OSM映射。

MapContent mapContent = new MapContent();
mapContent.addLayer(layer);
mapContent.addLayer(new AsyncTileLayer(new OSMService("Mapnik", "http://tile.openstreetmap.org/")));
mapContent.getViewport().setBounds(layer.getBounds());

GTRenderer renderer = new StreamingRenderer();
renderer.setMapContent(mapContent);

Rectangle imageBounds;
ReferencedEnvelope mapBounds;
try {
    mapBounds = map.getMaxBounds();
    double heightToWidth = mapBounds.getSpan(1) / mapBounds.getSpan(0);
    imageBounds = new Rectangle(5, 5, 1000, (int) Math.round(1000 * heightToWidth) + 20);
} catch (Exception e) {
    // failed to access map layers
    throw new RuntimeException(e);
}
BufferedImage mapBufferedImage = new BufferedImage(imageBounds.width, imageBounds.height, BufferedImage.TYPE_INT_ARGB);
Graphics2D gr = mapBufferedImage.createGraphics();
renderer.paint(gr, imageBounds, mapBounds);

这是painterfuture对象的内容：state = 0，callable = java.util.concurrent.executors $ runnableDapter@353333df16 [包装task = org.geotools.renderer.lite.lite.lite.lite.streamingrenderer- streamingrendererqunrenderqainterqainterqainterqainterthread read rade @15d0849] =“ thread [pool-1-thread-1,5，main]”，waiter = null

仅有featurelayer而不是OSM服务时，painterfuture对象被标记为正态上并且包含：state = 2，callable = 2，callable = 2 null，结果= null，runner = null，waiter = null。

谢谢。