清除图层中所有图层的代码如下：
IActiveView activeView = mainMapBean.getActiveView(); //获取当前地图的视图
activeView.clear(); //清除地图中的图层
activeView.refresh(); //刷新当前视图
新建一个对话框的过滤的类
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;
public class MapFileFilter{
public FileFilter createFileFilter(String description, String...extensions) {
description = createFileNameFilterDescriptionFromExtensions(
description, extensions);
return new FileNameExtensionFilter(description, extensions);
}
private String createFileNameFilterDescriptionFromExtensions(
String description, String[] extensions) {
String fullDescription = (description == null) ?
"(" : description + " (";
// build the description from the extension list
fullDescription += "." + extensions[0];
for (int i = 1; i < extensions.length; i++) {
fullDescription += ", .";
fullDescription += extensions[i];
}
fullDescription += ")";
return fullDescription;
}
}
通过调用createFileFilter方法来实现添加过滤
MapFileFilter fileFilter = new MapFileFilter();
fileChooser.resetChoosableFileFilters();
FileFilter mxdFilter = fileFilter.createFileFilter("ESRI地图文档","mxd");
fileChooser.addChoosableFileFilter(mxdFilter);
fileChooser.showOpenDialog(this);