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Passing input from jsp to action class

+2 votes
808 views

In my front end, i am allowing user to create and save multiple number of entries to a table at the same time.

For now i am sending this input to Java class in form of string which i am creating at the time of save. But if table size is very very big(eg. 400-500 entries), then creating string is a time taking process.
Is the any other solution for this?

posted Oct 1, 2013 by Satyabrata Mahapatra

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I'm not sure what you mean "in form of string" - anything in http world is a string. When you posting a form with first name, last name and age, and birthdate - all these values are passed as strings. They can be converted to proper type on server side - automatically by a framework or manually by a developer.
commented Oct 1, 2013 by anonymous
try writing in to a file and passing that file, but it definately will be a bad practice if you 're planning less no of entries.
commented Oct 1, 2013 by Salil Agrawal
It means i am adding my all input values to a single string separated by some delimiter. And Split the string in my Class file to get those values.
For example,
----------------------
|x1 | x2 | x3 | x4 |
----------------------
|y1 | y2 | y3 | y4 |
----------------------
|z1 | z2 | z3 | z4 |
----------------------
var strStr = "x1val||x2val||x3val||x4val||y1val||y2val||y3val||y4val||z1val||z2val||z3val||z4val"
And i am setting this value into a hidden string.
commented Oct 1, 2013 by Satyabrata Mahapatra

1 Answer

+1 vote

Send them as a List.

In Action:    
private List<String> myList;    
/* GETTER AND SETTER */

In JSP, handle a counter, and each time the user create a new row, use it to index the row:

<input type="text" name="myList[0]" />
<input type="text" name="myList[1]" />
<input type="text" name="myList[2]" />

and next time the user will create an entry, it will be

<input type="text" name="myList[3]" />

If the user creates the entries from, let's say, a popup or a modal dialog, and they won't be editable after having been created, then generate an field along with a (or whatever):

<input type="hidden" name="myList[3]" value="lastValueEnteredByUser" />
<span>lastValueEnteredByUser</span>
answer Oct 1, 2013 by anonymous
An example or any link to go through will help a lot.
commented Oct 1, 2013 by Satyabrata Mahapatra
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