public List<String> getExtStopWordDictionarys(){
		List<String> extStopWordDictFiles = new ArrayList<String>(2);
		String extStopWordDictCfg = props.getProperty(EXT_STOP);
		if(extStopWordDictCfg != null){
			//使用;分割多个扩展字典配置
			String[] filePaths = extStopWordDictCfg.split(";");
			if(filePaths != null){
				for(String filePath : filePaths){
					if(filePath != null && !"".equals(filePath.trim())){
						extStopWordDictFiles.add(filePath.trim());
					}
				}
			}
		}		
		return extStopWordDictFiles;		
	}