获取Map中的数据

Map<String,String> linkMap=(Map<String,String>)getPdfList();
Iterator link=linkMap.entrySet().iterator();
while(link.hasNext())
{
     Map.Entry entry=(Map.Entry)link.next();
     Object key=entry.getKey();
     Object value=entry.getValue();	
     if(key!=null && value!=null)
     {
	String fileName=(String)key;
	String linkstr=(String)value;
	savePdf(fileName,linkstr);
     }
}