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harini
How to get an Id vaue
1 Answer(s)      4 years and 5 months ago
Posted in : JSP-Servlet


Dear Sir,
Thanks for posting the answer,But my actaul problem is that when i selected a row and clickon a modify or delete etc button i have to go that page and i want that selected id value...
In form action their is a servlet action when i clickon a button it is going to 1st setAction(1,this)and soon .. method ,in that method i am setting a act value.When this page is submitted it is going to servlet their i am getting a act value and this act value is used in a switch(act),so it is fetching a respected cases.In that case i am calling a jsp by using a response.sendRedirect("./jsp/delete1.jsp"); then it sis going to that jsp where i need a id values and getting from

strId = request.getParameter("Id");

But i am getting a null values their so please help me sir...

Thanks and Regards
Harini Veerapur.

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June 17, 2010 at 5:01 PM


Hi Friend,

You can use the following code:

1)form.jsp:

<%@page import="java.sql.*"%>
<%
Class.forName("com.mysql.jdbc.Driver");
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/test";, "root", "root");
Statement st=connection.createStatement();
ResultSet rs=st.executeQuery("SELECT * FROM email");
%>
<form name="mesdetails" onsubmit="return setaction();" ><input type="hidden" name="act" value="" />
<table class="ContentTable" id="results">
<%
while(rs.next()){
%>
<tr>
<td align="center" valign="middle"><input type="hidden"
value="<%=rs.getString(1)%>" name="Id"><input type="radio" name="checkBox" value="<%=rs.getString(1)%>" class="inptCheck" /></td>
<td align="center" valign="middle"><%=rs.getString(2)%></td>
<td align="center" valign="middle"><%=rs.getString(3)%></td>
<td align="left" valign="middle" style="padding-left:5px;word-break:break-all">&nbsp;<a href="#" name="tip"
class="tip"><%=rs.getString(4)%><span> <%=rs.getString(4)%></span></a></td>
<td align="center" valign="middle"><a href="<%=rs.getString(5) %>" name="tip" class="tip"><%=rs.getString(5)%><span><%=rs.getString(5) %></span></a></td>
<td align="center" valign="middle"><%=rs.getString(6)%></td>
<td align="center" valign="middle"><%=rs.getString(7)%></td>
</tr>
<%

}
%>
<td colspan="2" align="center">
<input type="submit" class="inptButton" name="b" value="New" >
<input type="submit" class="inptButton" name="b" value="Modify" >
<input type="submit" class="inptButton" name="b" value="Delete">
<input type="submit" class="inptButton" name="b" value="Test Mail" >
<input type="submit" class="inptButton" name="b" value="Approved And Send To All" >
</td>
<input type="hidden" name="selectedRecord" value="true"/>
</form>
<script type="text/javascript">

var pager = new Pager('results', 10);
pager.init();
pager.showPageNav('pager', 'pageNavPosition');
pager.showPage(1);

</script>

<script type="text/javascript">
function setaction() {
var d=document.mesdetails;
var op = -1;
var ch="";
for (i=mesdetails.checkBox.length-1; i > -1; i--) {
if (mesdetails.checkBox[i].checked) {
ch = document.mesdetails.checkBox[i].value;
op = i; i = -1;
}
}
if(mesdetails.checkBox.checked){

op=i;i=-1;
}
if (op == -1) {
alert("You must select a radio button");
return false;
}
d.method="POST";
d.action="info.jsp";
d.submit();

return true;
}
</script>

2)info.jsp:

<%
String id=request.getParameter("checkBox");
String bname=request.getParameter("b");

if(bname.equals("New")){
out.println("This is button 'New' and id: "+id);
}
else if(bname.equals("Modify")){
out.println("This is button 'Modify' and id: "+id);
}
else if(bname.equals("Delete")){
out.println("This is button 'Delete' and id: "+id);
}
else if(bname.equals("Test Mail")){
out.println("This is button 'Test Mail' and id: "+id);
}
else if(bname.equals("Approved And Send To All")){
out.println("This is button 'Approved And Send To All' and id: "+id);
}

%>

Thanks


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