Question

查询在数据库中直接执行时运行完全正常，但它给了我上面的错误..我已经经历了类似的问题，但无法找到任何解决方案..

我的Dao代码

public String BASshiftingStudentsUpdate(HttpServletRequest request)
        {
            String sql="",msg="";
            String[] checkedApps = request.getParameter("checkedApps") != null&& request.getParameter("checkedApps")!=""?request.getParameter("checkedApps").split("\\,") : null;
            String ac_year=request.getParameter("acyear");              

            try
            {
                if (checkedApps != null)
                {

                    for (int i = 0; i < checkedApps.length; i++)
                    {                       

                        sql=" insert into pmss_school_students_details(admission_no,student_name,parent_name,native_dist,native_mandal,address,caste_code,subcaste_code,admission_year,"
                            + "admission_dt,admission_class,present_class,student_photo,entered_by,entered_dt,stu_subcaste_new,mobilenumber,parent_proffession,annual_income,date_of_birth,"
                            + "pre_quarterly_marks,pre_annual_marks,achievements,health_problems,height,weight,blood_group,fresh_renewal,identification_marks,orphan,semi_orphan,"
                            + "rescued_child,victim,handycapped,school_code,class_promoted,dept_code,dist_office_code,applied_date,stu_id,status,pre_halfyearly_marks,ac_year,"
                            + "pre_quarterly_marks_max,pre_halfyearly_marks_max,pre_annual_marks_max,gender,boaders,from_school) "

                            + " select admission_no,student_name,parent_name,native_dist,"
                            + "native_mandal,address,caste_code,subcaste_code,admission_year,admission_dt,admission_class,present_class+1  as present_class,student_photo,entered_by,entered_dt,"
                            + "stu_subcaste_new,mobilenumber,parent_proffession,annual_income,date_of_birth,pre_quarterly_marks,pre_annual_marks,achievements,health_problems,"
                            + "height,weight,blood_group,'R' as fresh_renewal,identification_marks,orphan,semi_orphan,rescued_child,victim,handycapped,'"+request.getParameter("to_schools_selected")+"' as school_code,class_promoted,"
                            + "dept_code,dist_office_code,applied_date,(substring(stu_id,1,4))::int+1||substr(stu_id,5) as stu_id,'3' as status,pre_halfyearly_marks,(substring(stu_id,1,4))::int+1||'-'||(substring(stu_id,3,2))::int+2 as ac_year,pre_quarterly_marks_max,"
                            + "pre_halfyearly_marks_max,pre_annual_marks_max,gender,boaders,school_code from pmss_school_students_details "
                            + " where stu_id='"+checkedApps[i]+ "' and school_code='"+  Integer.parseInt(request.getParameter("schoolcode").trim())
                            + "' and ac_year=int4(substring('"+ac_year+"',1,4))-1||'-'||int4(substring('"+ac_year+"',6,2))-1";

                        gen.executeUpdate(sql);
                    }

                }

executeUpdate方法

public int executeUpdate(String sql)
    {
        Session session = sessionfactory.openSession();
        SQLQuery  query=null;
        int result=0;
        try
        {
            result=session.createSQLQuery(sql).executeUpdate();

        }
        catch (Exception e) 
        {
            e.printStackTrace();
        } 
        finally
        {
            if (session.isOpen())
            {
                session.close();
            }
        }

        return result;
    }

查询中的列数相同。

Answer 1

冒号（:）是Hibernate中命名参数的前缀。确保你逃脱它们，例如\:\:int+1。

org.postgresql.util.PSQLException：没有为参数1指定值

1 个答案: