评论者@StanislavL导致我解决了这个问题,尽管他没有提供的链接,但没有工作,我无法找出原因,这些URL是正确的,我仔细检查过,但设置缓存后,窗格总是会为每个图像显示“断链”图片。所以,我发现这个职位,有一个HTMLEditorKit的缓存机制的认识:
https://stackoverflow.com/a/27669916/7377320
所提到的代码:
public class ImageCache extends Hashtable {
public Object get(Object key) {
Object result = super.get(key);
if (result == null){
result = Toolkit.getDefaultToolkit().createImage((URL) key);
put(key, result);
}
return result;
}
}
...
Dictionary cache = (Dictionary) pane.getDocument().getProperty("imageCache");
if (cache == null) {
cache = new ImageCache();
pane.getDocument().putProperty("imageCache", cache);
}
曾为完美无瑕,并它正在工作。我还做了这种变化的ImageView的一个HTMLEditorKit:
public class MyImageView extends ImageView {
public MyImageView(Element elem) {
super(elem);
}
@Override
public Icon getNoImageIcon() {
return null;
}
@Override
public Icon getLoadingImageIcon() {
return null;
}
}
这不会在窗格中显示任何损坏的链接的图片了,还没有“预加载”断开链接的图片了。
一个HTMLEditorKit:
public class MyHTMLEditorKit extends HTMLEditorKit {
@Override
public ViewFactory getViewFactory() {
return new HTMLEditorKit.HTMLFactory() {
public View create(Element e) {
View v = super.create(e);
Object o = e.getAttributes().getAttribute(StyleConstants.NameAttribute);
if (o instanceof HTML.Tag) {
HTML.Tag kind = (HTML.Tag) o;
if (kind == HTML.Tag.IMG) {
return new MyImageView(e);
}
}
if (v instanceof InlineView) {
return new InlineView(e) {
public int getBreakWeight(int axis, float pos, float len) {
return View.GoodBreakWeight;
}
public View breakView(int axis, int p0, float pos, float len) {
if (axis == View.X_AXIS) {
checkPainter();
int p1 = getGlyphPainter().getBoundedPosition(this, p0, pos, len);
if (p0 == getStartOffset() && p1 == getEndOffset()) {
return this;
}
return createFragment(p0, p1);
}
return this;
}
};
} else if (v instanceof ParagraphView) {
return new ParagraphView(e) {
protected javax.swing.SizeRequirements calculateMinorAxisRequirements(int axis, javax.swing.SizeRequirements r) {
if (r == null) {
r = new javax.swing.SizeRequirements();
}
float pref = layoutPool.getPreferredSpan(axis);
float min = layoutPool.getMinimumSpan(axis);
// Don't include insets, Box.getXXXSpan will include them.
r.minimum = (int) min;
r.preferred = Math.max(r.minimum, (int) pref);
r.maximum = Integer.MAX_VALUE;
r.alignment = 0.5f;
return r;
}
};
}
return v;
}
};
}
}
也许'的SwingWorker'? [Profile](http://stackoverflow.com/q/2064427/230513)可以肯定。 –
trashgod
http://java-sl.com/tip_local_images.html你可以尝试在自己的缓存立体图像 – StanislavL
非常感谢你的提示,解决了问题 –