src/org/nutz/dao/util/DaoUp.java
public void init(Properties props) {
        if (dao != null) {
            throw new IllegalArgumentException("DaoUp is inited!!");
        }
        if (props.size() == 0) {
            throw new IllegalArgumentException("DaoUp props size=0!!!");
        }
        DataSource ds = buildDataSource(props);
        setDataSource(ds);
    }
public void init(Properties props) {
        if (dao != null) {
            throw new IllegalArgumentException("DaoUp is inited!!");
        }
        if (props.size() == 0) {
            throw new IllegalArgumentException("DaoUp props size=0!!!");
        }
        DataSource ds = buildDataSource(props);
        setDataSource(ds);
    }
给定一个Properties配置,不能为null!!!! 最起码要包含一个叫url的参数!!!
@param props 配置信息