假定存储过程名字为 sp_yourprocedurename，有两个参数

CallableStatement cstmt = con.prepareCall("{call sp_yourprocedurename(?,?}");
cstmt.registerOutparameter(2,java.sql.Types.FLOAT);
cstmt.setint(1,parameter1);
cstmt.execute();
out.println("Procedure output is :"+cstmt.getFloat(2));