I have data validation by JS. Now I want to write another set's data input validation by java, not java script - server-side validation. How can I do that?
Here are my input parameters
<form class="portlet-generic-con
<div class="portlet-generic-con
<fieldset class="portlet-generic-con
<legend class="portlet-generic-con
<label class="portlet-form-label"
</legend>
<input name="VolContID" type="hidden" value="999" >
<input name="radio_button" type="radio" value="imbalance" onclick="toggleBox('IC',1)
<label class="portlet-form-label"
<input name="radio_button" type="radio" value="volume" checked onclick="toggleBox('IC',0)
<label class="portlet-form-label"
<div style="padding-top:5px;pad
<label class="portlet-form-label"
<input name="DegImb" type="text" size="3" value="65" onkeyup="ValidateIntlNumbe
<label class="portlet-form-label"
<label class="portlet-form-label"
<input name="TotalFlowImb" type="text" size="3" value="10" onkeyup="ValidateIntlNumbe
<label class="portlet-form-label"
</div>
</fieldset>
</div>
<div class="portlet-generic-con
<label class="portlet-form-label"
# of Results: </label><input type="text" name="Num_Results" size="3" maxlength="3" value="10" onkeyup="ValidateIntlNumbe
</div>
<div class="portlet-generic-con
<label class="portlet-form-label"
<input type="text" size="10" maxlength="20" name= "BegDate" value="<%=y%>">
<a href="javascript:showCal('
<img src="images/cal.jpg" alt="start date calendar icon" width="34" height="21" border="0"></a> -
<input type="text" size="10" maxlength="20" name="EndDate" value=<%=s%> >
<a href="javascript:showCal('
<img src="images/cal.jpg" alt="end date calendar icon" width="34" height="21" border="0"></a>
<label class="portlet-generic-con
<label class="portlet-form-label"
</div>
<%
Calendar cal2 =Calendar.getInstance();
Integer hr = new Integer( cal2.get(Calendar.HOUR_OF_
Integer min = new Integer(( cal2.get(Calendar.MINUTE))
String MyNow = hr.toString()+":"+min.toSt
%>
<div class="portlet-generic-con
<label class="portlet-form-label"
<select name="begtime"><option><%=
- <select name="endtime"><option><%=
</div>
<div class="portlet-generic-con
<label class="portlet-form-label"
<select multiple id="networks" name="networks" type="text" class="portlet-form-input-
</select>
</div>
<div class="portlet-document-fo
<input class="portlet-form-button
<input class="portlet-form-button
</div>
</form>
Here are the inputs I need to do server-side validation in java
1. Degree of Imbalance:<input name="DegImb" type="text">, must be an integer value
2. Min. Flows Per Hour: <input name="TotalFlowImb" type="text">, must be an integer value
3. # of Results: <input type="text" name="Num_Results">, must be an integer value
4. Begin Date <input type="text" size="10" maxlength="20" name= "BegDate"> must be a date value
5. End Date <input type="text" size="10" maxlength="20" name="EndDate" > must be a date value
6. begtime <select name="begtime">, must be time value
7. <select name="endtime">, must be a time value
I want to do validation above by java. in the code, if not the value, throw out an exception. I want to do the
try....
cath....
Can anyone give me sample code about above?
Thanks
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I would say that the cleanest way to do your validation is to use a validation framework. I know it requires a bit of reading but It will help in the long run.
Two such packages I suggest are the one from the SpringFramework http://static.springframew
Once you get used to them you end up saving time not writing the same validation code over and over again
I got a solution but it's not perfect. Can anyone help me this solution become perfect. I create a file exact the same the one. Here it's my struture.
view.jsp ----a form for user to input parameters as above code
AdvView.jsp --- output result from view.jsp. If the output is not correct, go to ValidateView.jsp and ask input again.
<%@ page errorPage="ValidateView.js
<%@ page isErrorPage="true" %>
<%//= exception %>
<%
String Num_Rslt = request.getParameter("Num_
String MyBegDate = request.getParameter("BegD
String MyEndDate = request.getParameter("EndD
String MyBegTime = request.getParameter("begt
String MyEndTime = request.getParameter("endt
String MyDegImb = request.getParameter("DegI
String MyTotalFlowImb = request.getParameter("Tota
try{
int MyNumRstInt = Integer.parseInt(Num_Rslt)
int MyDegImbInt = Integer.parseInt(MyDegImb)
int MyTotalFlowImbInt = Integer.parseInt(MyTotalFl
Date MyBegDateV = DateFormat.getInstance().p
Date MyEndDateV = DateFormat.getInstance().p
}
catch (Exception e)
{
e.getMessage();
%>
<% } %>
ValidateView.jsp --- the same as view.jsp but below
<%@ page errorPage="AdvView.jsp" %>
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@ page isErrorPage="true" %>
<%=exception %>
............
Now the problem is
When I input a wrong input, it has the fellowing
java.lang.NumberFormatExce
My questions are
1. I want to remove the words " java.lang.NumberFormatExce
2. Indicate which which input parameter such as # of Result: pp
3. so far this method is only can catch one input wrong. If I want to catch all wrong such as # of Result, date....
How to fix them?
Business Accounts
Answer for Membership
by: KuldeepchaturvediPosted on 2007-12-06 at 09:45:12ID: 20421519
1. Degree of Imbalance:<input name="DegImb" type="text">, must be an integer value
2. Min. Flows Per Hour: <input name="TotalFlowImb" type="text">, must be an integer value
3. # of Results: <input type="text" name="Num_Results">, must be an integer value
4. Begin Date <input type="text" size="10" maxlength="20" name= "BegDate"> must be a date value
5. End Date <input type="text" size="10" maxlength="20" name="EndDate" > must be a date value
6. begtime <select name="begtime">, must be time value
7. <select name="endtime">, must be a time value
in your action url servlet.
try{
String degImp = request.getParameter("DegI
int degImpint = Integer.parseInt(degImp);
// Same code for your other two variables.
Date begDate = DateFormat.getInstance().p
//same code for your second date.
}
Catch ( Exception e)
{
//validation failed.
}