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很高兴今天成为了CSDN的专家，所以再忙也要抽空写一篇博客。最近公司有个需求要在RCP应用中用树状结构显示层级关系。我找了半天的开源框架，最后发现Eclipse REST最符合现在的需求。REST是专门用来显示图状效果的，废话少说了上效果，上代码。

public class DeviceTreeViewSWT {    public static void main(String[] args) {        Display d = new Display();        Shell shell = new Shell(d);        Image image1 = Display.getDefault().getSystemImage(SWT.ICON_INFORMATION);        Image image2 = Display.getDefault().getSystemImage(SWT.ICON_WARNING);        Image image3 = Display.getDefault().getSystemImage(SWT.ICON_ERROR);        shell.setLayout(new FillLayout());        shell.setSize(800, 800);        Graph g = new Graph(shell, SWT.NONE);        g.addSelectionListener(new SelectionAdapter() {            public void widgetSelected(SelectionEvent e) {                System.out.println(((Graph) e.widget).getSelection());            }        });        g.setConnectionStyle(ZestStyles.CONNECTIONS_DIRECTED);        GraphNode n1 = new GraphNode(g, SWT.NONE, "Virtual");        n1.setBackgroundColor(new Color(d,255,0,0));        GraphNode n2 = new GraphNode(g, SWT.NONE, "Shanghai");        GraphNode n3 = new GraphNode(g, SWT.NONE, "Beijing");        GraphNode n4 = new GraphNode(g, SWT.NONE, "AGM001");        GraphNode n5 = new GraphNode(g, SWT.NONE, "AGM002");        GraphNode n6 = new GraphNode(g, SWT.NONE, "AGM003");        GraphNode n7 = new GraphNode(g, SWT.NONE, "AGM004");        GraphNode n8 = new GraphNode(g, SWT.NONE, "AGM005");        GraphNode n9 = new GraphNode(g, SWT.NONE, "AGM006");        GraphNode n10 = new GraphNode(g, SWT.NONE, "AGM007");        GraphNode n11 = new GraphNode(g, SWT.NONE, "AGM008");//        class PathFigure extends PolylineConnection {//            public PathFigure() {//                setTargetDecoration(new PolylineDecoration());//                setConnectionRouter(new ManhattanConnectionRouter());//            }//        }        new GraphConnection(g, SWT.NONE, n1, n2);        new GraphConnection(g, SWT.NONE, n1, n3);        new GraphConnection(g, SWT.NONE, n2, n4);        new GraphConnection(g, SWT.NONE, n2, n5);        new GraphConnection(g, SWT.NONE, n2, n6);        new GraphConnection(g, SWT.NONE, n3, n7);        new GraphConnection(g, SWT.NONE, n3, n8);        new GraphConnection(g, SWT.NONE, n5, n9);        new GraphConnection(g, SWT.NONE, n5, n10);        new GraphConnection(g, SWT.NONE, n4, n11);        //g.setLayoutAlgorithm(new TreeLayoutAlgorithm(LayoutStyles.ENFORCE_BOUNDS), true);        //g.setLayoutAlgorithm(new HorizontalTreeLayoutAlgorithm(LayoutStyles.ENFORCE_BOUNDS),true);        g.setLayoutAlgorithm(new RadialLayoutAlgorithm(LayoutStyles.ENFORCE_BOUNDS),true);        //g.setLayoutAlgorithm(new GridLayoutAlgorithm(LayoutStyles.ENFORCE_BOUNDS), true);        shell.open();        while (!shell.isDisposed()) {            while (!d.readAndDispatch()) {                d.sleep();            }        }        image1.dispose();        image2.dispose();        image3.dispose();    }}

效果不错吧,用来显示图，树等都非常的方便

如果你用Jface封装的GraphViewer，那MVC使用起来更是方便.

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