关于Parameter index out of range (1 > number of parameters, which is 0).

关于Parameter index out of range (1 > number of parameters, which is 0).

 

Solution:

stmt = conn.prepareStatement("SELECT * from me.tb_sign  where 1=1");

stmt.setObject (1, "parameter 1");

The use of pre-sql prepareStatement reported this wrong, because: http://www.yayihouse.com/yayishuwu/chapter/1969