使用JdbcTemplate报 Incorrect column count: expected 1, actual 5错误解决

Incorrect column count: expected 1, actual 5

在使用jdbc的querForObject queryForList的时候，出现Incorrect column count: expected 1, actual 5

比如 

1 2	String sql = "select * from sysuser where id = 3"; SysUser s = this.jdbcTemplate.queryForObject(sql, SysUser.class);

其实这样是不对的，

应该为

1 2 3

String sql = "select name from sysuser where id = 3"; String s = this.jdbcTemplate.queryForObject(sql, String.class); System.out.println(s);

这个 jdbcTemplate.queryForObject(sql, requiredType) 中的requiredType应该为基础类型，和String类型。

如果想查真正的object应该为

1 2 3 4

List<SysUser> userList = jdbcTemplate.query(sql, new Object[]{}, new BeanPropertyRowMapper<SysUser>(SysUser.class)); if(null!=userList&&userList.size()>0){     SysUser user = userList.get(0); }