Call java method on button click

Question

Is it possible to call a method in Java by button onclick in JSP?

For example:

Java:

@UrlBinding("/Student/import.action")
public class StudentAction implements ActionBean {

  public void testMe() {
      //do something
    }
}

JSP

<stripes:form beanclass="com.example.action.StudentAction">
   <input type="button" value="Test" onClick="call testMe"/>
</stripes:form>

I read some posts on Internet that it could be done by Ajax/jQuery, but I couldn't understand how they do it. I just know itshould be something like this:

$.ajax({
    type:"POST"
    url: 
})

or

$(document).ready(function() {
    $("#button").click(function(){

    })
})

is there any other way to do this, and if no, I would appreciate a simple explanation of how to do it with Ajax/JQuery.

Note: I don't want to use submit input or stripes:submit!

What about learning basics about Ajax, HTTP and JSP?

Regent
– Regent

2015-02-12 10:35:45 +00:00
Commented Feb 12, 2015 at 10:35 — Regent
– Regent, Commented Feb 12, 2015 at 10:35

atish shimpi · Accepted Answer · 2015-02-12 10:34:58Z

1

It will not call Java method, you have to write Servlet then call the doGet() or doPost()method of Servlet on form submission or using ajax call. refer this example

answered Feb 12, 2015 at 10:34

atish shimpi

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1 Comment

meskobalazs Over a year ago

Writing a pure servlet, when using a servlet framework seems like a bad idea to me.

meskobalazs · Accepted Answer · 2015-02-12 10:51:05Z

If you have an ActionBean (which is a servlet deep down), you can bind an URL to it with @UrlBinding (as you already do). You just need to make a HTTP request to that URL using Ajax in the 'click' event handler of the button.

So you could have this markup:

<stripes:form beanclass="com.example.action.TestMeActionBean">
    <input type="button" value="Test" onClick="testMe()"/>
</stripes:form>
<script>
function testMe () {
    $.ajax({
        type: 'post',
        url: 'action/testMeAction',
        ...
    });
}
</script>

On the server side, you just need to create the handling action:

@UrlBinding("/action/testMeAction")
public TestMeActionBean implements ActionBean {

After this, you only need to write a handler method. For example, using your method declaration:

    @DefaultHandler
    public void testMe() {
        //do something
    }
}

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