Creating a callback example simply involves creating an HTML page that
invokes the Hello User web script with a callback that displays the JSON response in an alert
box.
-
Create the HTML page.
- Create a file named callback.html on your machine's local file system.
-
Edit the file and add the following HTML:
<html> <body> <script> // callback function to display greeting function showGreeting(res) {alert(res.greeting + ' ' + res.user);} // invoke web script hello user web script var script = document.createElement('SCRIPT'); script.type = 'text/javascript'; script.src = 'http://localhost:8080/alfresco/s/hellouser.json?alf_callback=showGreeting'; document.body.appendChild(script); </script> </body> </html>
-
Test the callback.
- Open the file callback.html file in your web browser.
- If prompted, log in with the user name admin and password admin.
An alert box displaying the message hello admin indicates your callback is working.
Note: For security reasons, this mechanism is disabled by default. To enable it on any web
scripts container, set the bean property: allowCallbacks = true. This
change can be made in web-scripts-application-context.xml, or more
conveniently outside of the SkyVault WAR file in
tomcat/shared/classes/alfresco/extension/custom-web-context.xml.
<bean id="webscripts.container" class="org.alfresco.repo.web.scripts.RepositoryContainer" parent="webscripts.abstractcontainer">
<property name="name"><value>Repository</value></property>
<property name="allowCallbacks">
<value>true</value>
</property>
...