Please help this clueless beginner with out.print syntax....
Please help a clueless beginner out!!!! :-)
I'm trying to build a dynamic table that functions as a calendar...(see http://www.oreilly.com/catalog/javacook/chapter/ch18.html for the basic idea and code structure).
Here's the problem...I want to make each date inside of the table a hyperlink to a new page. I figured out how to create the hyperlinks, but I CAN'T figure out how to create hyperlinks that pass variables to a new page.
Here's the code that works:
// Fill in numbers for the day of month.
for (int i = 1; i <= daysInMonth; i++)
out.print("<td>");
out.print("<a href=newpage.jsp>");
out.print(i);
out.print("</a>");
out.print("</td>");
Here's the code that DOESN'T work....but can serve as pseudo-code for what I want to do:
// Fill in numbers for the day of month.
for (int i = 1; i <= daysInMonth; i++)
out.print("<td>");
out.print("<a href=newpage.jsp?year=<%= yy %>&month=<%= months[mm] %>&date=<%= i %>>");
out.print(i);
out.print("</a>");
out.print("</td>");
<%= yy %>, <%= months[mm] %> are defined elsewhere in the code, and I want to use the current value of "i" from the loop.
So, if everything works like I want, the table will get created, and if yy=2002 and mm=January, then the hyperlinks will look like:
for day 1:
"/newpage.jsp?year=2002&month=January&date=1"
for day 2:
"/newpage.jsp?year=2002&month=January&date=2"
...for day 31:
"/newpage.jsp?year=2002&month=January&date=31"
Can someone please point me in the right direction? Is it even possible to do what I want? (I assume it is...but maybe I can't use out.print???)
Thanks!
Hi. The expression "<%=some_Java_expression %>" is the JSP tag, that returns string value to HTML code. You should use it in HTML block like:
<%String myname="Ivan"; %>
<body>
<p>My name is: <%=myname %></p>
But You tried to use it inside the string expression and it generated some code like this:
<a href="newpage.jsp?year=<%=yy%">...
, didn't it?
It invokes method out.print(" ... "), that prints this string value (but in the HTML block). So You tried to print something inside the print method. You should rewrite Your code like this:
for (int i = 1; i <= daysInMonth; i++)
out.print("<td>");
out.print("<a href=newpage.jsp?year="+yy+"&month="+months[mm]+"&date="+i+">");
out.print(i);
out.print("</a>");
out.print("</td>");
I used the + operator to join Your code for link tag with the values (yy, months[mm], i.
I hope it helps You,
bye.</a>
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