Eclipse插件：Imarker行标注创建与管理

/*
 * Creates a Marker
 */
public static IMarker createMarker(IResource res, Position position,String msgInfo)throws CoreException {
            IMarker marker = null;
            //note: you use the id that is defined in your plugin.xml
            marker = res.createMarker(Utils.MARKER_ID);
            marker.setAttribute(IMarker.MESSAGE, msgInfo); 
            //compute and set char start and char end
            int start = position.getOffset();
            int end = position.getOffset() + position.getLength();
            System.out.println("标注创建时createMarker  start == "+start+" end == "+end);
            marker.setAttribute(IMarker.CHAR_START, start);
            marker.setAttribute(IMarker.CHAR_END, end);
//            marker.setAttribute(IMarker.PRIORITY, IMarker.PRIORITY_NORMAL);
//            marker.setAttribute(IMarker.SEVERITY, IMarker.SEVERITY_WARNING);
            return marker;
    }
/**
 * 删除对应的Marker标志
 * @param editorPart
 */
private void removeMarker(IEditorPart editorPart) {
try {
int depth = IResource.DEPTH_INFINITE; 
IFile file = (IFile) editorPart.getEditorInput().getAdapter(IFile.class); 
IMarker[] markers = file.findMarkers(Utils.MARKER_ID, true, depth); 
// file.deleteMarkers(MARKER, true, depth);
if(null == markers || markers.length<=0) {
return;