Submit multiple values

Question

Hi all,
For my school project i'm building a student grade application using Servlets and JSP.
Teachers can add grades for students.
When a teacher chooses an subject, fo example math, a list with all the students of the class is displayed.
After every name, there is an input field.
The teacher can add or update grades for the students.
In my form i have a loop which prints a input for the grade and an hidden input for the user id.
What is the best way to store the data in the database with my servlet?
When i submit the grades i want to know what grade belongs to which user id.
And how can i check if there is already a grade for that user, update.
I got it working, but i just want to make it work the right way.
Here is my jsp:
<%Iterator itr;%>
<% List data= (List)session.getAttribute("studentlist");
        for (itr=data.iterator(); itr.hasNext(); )
                String value=(String)itr.next();
                String value2=(String)itr.next();
%>
<tr>
    <td><label for="student"><%=value%></label></td>
     <td><input type="hidden" name="student" value="<%=value2%>" /><td>
    <td><input type="text" name="grade" id="<%=value%>" /></td>
</tr>
<%}%>Here is my Servlet:
String[] grades = request.getParameterValues("grade");
                String[] student = request.getParameterValues("student");
                for(int i=0;i<student.length;i++){
                    strQuery = "insert " +
                                "into " +
                                "cijfer " +
                                "values(" +
                                "null,"+grades[i]+",NOW(),1,'"+SubjectId+"',"+student[i]+")";It's not just about inserting multiple values, but inserting mltiple values for multiple students :)
I just want to do it the right and clean way.
Can i get some help please?
Thnx in advance.
Edited by: vishantpoeran on Apr 12, 2010 2:21 PM

Answer 1

Hello,
Check the below code.
DATA: t_sel TYPE TABLE OF rsparams with header line.
t_sel-selname = 'SO_OBJ_N'.
t_sel-kind = 'P'.
t_sel-sign = 'I'.
t_sel-option = 'EQ'.
t_sel-low = 'YCRM01_REP_0590235 '.
APPEND T_SEL.
CLEAR T_SEL.
t_sel-selname = 'P_ONLYNU'.
t_sel-kind = 'P'.
t_sel-sign = 'I'.
t_sel-option = 'EQ'.
t_sel-low = SPACE.
APPEND T_SEL.
CLEAR T_SEL.
t_sel-selname = 'P_ONLYTA'.
t_sel-kind = 'P'.
t_sel-sign = 'I'.
t_sel-option = 'EQ'.
t_sel-low = SPACE.
APPEND T_SEL.
CLEAR T_SEL.
t_sel-selname = 'P_NOTMP'.
t_sel-kind = 'P'.
t_sel-sign = 'I'.
t_sel-option = 'EQ'.
t_sel-low = 'X'.
APPEND T_SEL.
CLEAR T_SEL.
t_sel-selname = 'P_NOTMP'.
t_sel-kind = 'P'.
t_sel-sign = 'I'.
t_sel-option = 'EQ'.
t_sel-low = 'X'.
APPEND T_SEL.
CLEAR T_SEL.
t_sel-selname = 'P_SHPR'.
t_sel-kind = 'P'.
t_sel-sign = 'I'.
t_sel-option = 'EQ'.
t_sel-low = 'LSVIM*'.
APPEND T_SEL.
CLEAR T_SEL.
t_sel-selname = 'P_VIEW'.
t_sel-kind = 'P'.
t_sel-sign = 'I'.
t_sel-option = 'EQ'.
t_sel-low = 'X'
APPEND T_SEL.
CLEAR T_SEL.
t_sel-selname = 'P_UPLOAD'.
t_sel-kind = 'P'.
t_sel-sign = 'I'.
t_sel-option = 'EQ'.
t_sel-low = 'X'.
APPEND T_SEL.
CLEAR T_SEL.
submit ZRSUNISCAN_FINAL_UC  WITH SELECTION-TABLE T_SELAND
RETURN.
tHANKS.
rAMYA.