Question

90

How to call servlet from javascript

rated 0 times [ 95] [ 5] / answers: 1 / hits: 51549 / 13 Years ago, thu, june 2, 2011, 12:00:00

Servlet Configuration in web.xml

<servlet>

    <description>This is the description of my J2EE component</description>

    <display-name>This is the display name of my J2EE component</display-name>

    <servlet-name>DataEntry</servlet-name>

    <servlet-class>com.ctn.origin.connection.DataEntry</servlet-class>

  </servlet>



  <servlet-mapping>

    <servlet-name>DataEntry</servlet-name>

    <url-pattern>/dataentry</url-pattern>

  </servlet-mapping>

Javascript :

<script type=text/javascript>

    function unloadEvt() {



        document.location.href='/test/dataentry';



    }

</script>

But using this javascript can't call my servlet.

Is there any error ? how to call servlet ?

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lucianom

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1 Year ago

answered 13 Years ago emiliano · Accepted Answer

This can be done using ajax

<script type=text/javascript>

    function loadXMLDoc() {

        var xmlhttp;

        if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari

            xmlhttp = new XMLHttpRequest();

        } else {// code for IE6, IE5

            xmlhttp = new ActiveXObject(Microsoft.XMLHTTP);

        }

        xmlhttp.onreadystatechange = function() {

            if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {

                document.getElementById(myDiv).innerHTML=xmlhttp.responseText;

            }

        }

        xmlhttp.open(GET, /testmail/dataentry, true);

        xmlhttp.send();

    }

</script>