return jdbcTemplate.queryForObject(sql, new Object[]{name,pwd}, new UserMapper()); 這一句我寫了會報錯，為啥呢？ The type org.springframework.dao.DataAccessException cannot be resolved. It is indirectly referenced from required .class files 這個錯誤按照網上說明加入了spring.transaction-3.0.5.jar后又變成了錯誤：DataAccessException的錯
