DBUtils架构分析

    //AsyncQueryRunner.java
    public <T> Future<T> query(final String sql, final ResultSetHandler<T> rsh) throws SQLException {
        return executorService.submit(new Callable<T>() {

            @Override
            public T call() throws Exception {
                return queryRunner.query(sql, rsh);
            }

        });
    }

    //BeanHandler.java
    @Override
    public T handle(ResultSet rs) throws SQLException {
        return rs.next() ? this.convert.toBean(rs, this.type) : null;
    }

    @Override
    public List<T> handle(ResultSet rs) throws SQLException {
        List<T> rows = new ArrayList<T>();
        while (rs.next()) {
            rows.add(this.handleRow(rs));
        }
        return rows;
    }

   protected abstract T handleRow(ResultSet rs) throws SQLException;

DBUtils架构分析

原文：http://blog.csdn.net/dlf123321/article/details/45203171