JSP dynamic form processing

Question

Hi, I'm a JSP beginner. I have a form, which contains several tables. The number of the tables is not fixed. All the tables have the same data structure, just the size of them are not the same. Now I need to submit the form and then use JSP to process the data in it. What I know is to use JavaBean to deal with a form with fixed number of inputs. But if the number of inputs is not fixed, like what I described above, is there any efficient way I can use to read it with JSP?
Thank you!

Answer 1

When you submit a JSP page, each input tag in the form must have a unique name so that whatever you submit the JSP page to can read those unique name/value pairs of values.
If you have a list of indeterminate length (myArray.size() ), here is an example of how you would give each textfield a unique name:
<%for(int ii=0;ii<myArray.size();++ii){%>
<input type="text" name="firstName_<%=ii%>" >
<%}%>
In the above, the first textfield name will be firstName_0, the second would be firstName_1, etc.
Back on the servlet, you read it as follows:
for(int ii=0;ii<myArray.size();++ii){
String firstName= request.getParameter("firstName_"+ii);
}