<div>
 &nbsp;Thsi article explains how you can avoid duplicate form submissions. You might be able to adapt it for multiple clicks on links.
</div>


 Thsi article explains how you can avoid duplicate form submissions. You might be able to adapt it for multiple clicks on links.

<div>
public void doPost(HttpServletRequest req, HttpServletResponse resp) {<br />
&nbsp; &nbsp; if (req.getSession().getAttri<wbr />bute(&quot;proc<wbr />essing&quot;) != null) {<br />
&nbsp; &nbsp; &nbsp; &nbsp; req.getSession().setAttrib<wbr />ute(&quot;proce<wbr />ssing&quot;, new Object());<br />
&nbsp; &nbsp; &nbsp; &nbsp; try {<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //process the request<br />
&nbsp; &nbsp; &nbsp; &nbsp; } finally {<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; req.getSession().setAttrib<wbr />ute(&quot;proce<wbr />ssing&quot;, null);<br />
&nbsp; &nbsp; &nbsp; &nbsp; }<br />
&nbsp; &nbsp; }<br />
...<br />

</div>


public void doPost(HttpServletRequest req, HttpServletResponse resp) {
    if (req.getSession().getAttribute("processing") != null) {
        req.getSession().setAttribute("processing", new Object());
        try {
            //process the request
        } finally {
            req.getSession().setAttribute("processing", null);
        }
    }
...


<div>
<div class="content wysiwyg-content">
My problem is, I have a user which sometimes clicks multiple times on a HTTP link. When they do this it causes multiple requests/threads to be sent to the Servlet. All of these requests are fully processed by the backend.<br />
<br />
I know one way of preventing this from happening, i.e. JavaScript, but this is unacceptable for this solution. I also tried setting a parameter in the session and returning from the method when it is set, but this just generates a blank page on the second which arrives before the first has finished.<br />
<br />
Any help or suggestions would be greatly appreciated.<br />
<br />
Kindest regards,<br />
Damien<br />

</div>
</div>


My problem is, I have a user which sometimes clicks multiple times on a HTTP link. When they do this it causes multiple requests/threads to be sent to the Servlet. All of these requests are fully processed by the backend.

I know one way of preventing this from happening, i.e. JavaScript, but this is unacceptable for this solution. I also tried setting a parameter in the session and returning from the method when it is set, but this just generates a blank page on the second which arrives before the first has finished.

Any help or suggestions would be greatly appreciated.

Kindest regards,
Damien


Preventing multiple HTTP request to a Servlet

Java Enterprise Edition (Java EE) is a specification defining a collection of Java-based server and client technologies and how they interoperate. Java EE specifies server and client architectures and uses profiles to define technology sets targeted at specific classes of applications. All Java EE profiles share a set of common features, such as naming and resource injection, packaging rules and security requirements.

Java EE

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.