code: private String[] getDataSource() {
  		String ds = this.getProperty("db.ds", "");
  		if (StrKit.isBlank(ds)) {
  			return (new String[0]);
  		}
  		if (ds.contains("，")) {
  			new IllegalArgumentException("Cannot use ，in ds");
  		}
  		return ds.split(",");
  	}
docs: 获取数据源
  @return