如何在JBoss AS上使用Java Restful Web服务启用CORS

Question

I have a very simple Java RESTful web service that includes two methods for GET and POST requests. I am using Jboss Application server 7 on OpenShift platform.

I need to enable JavaScript clients to consume the service using Ajax by sending or receiving JSON data.

The web service is running without problems. I can consume it using Ajax from a script in the same application, but I need to consume it from other applications on other domains.

How do I enable Cross-Origin-Request-Sharing (CORS) on my REST endpoints?

Answer 1

Add this header to your response:

Access-Control-Allow-Origin: *

For example, for servlets you would do this:

Alternatively, you can add the jetty-servlets.jar library as a dependency and add this filter to your web.xml. This will allow CORS for all of your web services.

<filter>
    <filter-name>cross-origin</filter-name>
    <filter-class>org.eclipse.jetty.servlets.CrossOriginFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>cross-origin</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

If you only need a specific service annotated, first we'll need more information about what library you're using to implement your RESTful service.