Databases
StackOverflow2013
Postsdbo
POHow to translate JSP servlet which calls an object method into JSTL?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POHow to translate JSP servlet which calls an object method into JSTL?
    primarykey
    data
    text
    <p>I just started to use JSTL for my project, but sorry to say it's really confusing to me.</p> <p>I originally used <code>Number.java</code></p> <pre><code>package com.mycompany public class Number { private int total; public static int add (int x, int y) { return total; } </code></pre> <p>And in <code>showNumber.jsp</code> i could just use </p> <pre><code>&lt;%@page import= "com.mycompany.Number" %&gt; </code></pre> <p>and inline use <code>&lt;%= Number.add(5,6) %&gt;</code></p> <p>How can I rewrite this part in <code>JSTL</code>? Is that also possible to import the class <code>Number.java</code>? I tried so many different things, e.g. <code>&lt;c:out value="${Number}.add(5,6)" /&gt;</code>, but still cannot find a solution. Thanks. </p> <hr> <p>Edited: I use @Victor's approach, and it does work. In my case, I need to reuse other's variable from spring framework, say <code>NumberTwo.java</code> and <code>totalTwo</code> as private variable inside. And added "100" to this <code>totalTwo</code>.</p> <p>For the src where i need to use it is <code>&lt;spring:param name="secondNumber" value ="${NumberTwo.totalTwo}" /&gt;</code>.</p> <p>However, intutively i used <code>(int) pageContext.getAttribute("NumberTwo.totalTwo")</code>, it always returned me <code>null</code>.</p> <p>The other workaround is first <code>&lt;c:set var="result" value="${NumberTwo.totalTwo}" /&gt;</code> then <code>&lt;% String result = (String) pageContext.getAttribute("result"); %&gt;</code> and then <code>&lt;%= Number.add(result, 100) %&gt;</code></p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USRichard
    1. USRichard
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. CO<c:out value="${5 + 6}" />
      singulars
      1. POHow to translate JSP servlet which calls an object method into JSTL?
      1. USpap
    2. COthe `add` is just an simplified example for function usage
      singulars
      1. POHow to translate JSP servlet which calls an object method into JSTL?
      1. USRichard
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload