CODEWITHSUNDEEP
javaspringrestjerseyjax-rs
javauser35
javauser35

Reputation: 1315

Jersey+Spring integration and web.xml

I'm trying to make jersey+spring integration.

I have question about web.xml configuraiton.

This example includes SpringServlet:

<servlet>
    <servlet-name>jersey-serlvet</servlet-name>
    <servlet-class>
        com.sun.jersey.spi.spring.container.servlet.SpringServlet
    </servlet-class>
    <init-param>
        <param-name>
                             com.sun.jersey.config.property.packages
                    </param-name>
        <param-value>com.mkyong.rest</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

https://www.mkyong.com/webservices/jax-rs/jersey-spring-integration-example/

But another example doesn't include SpringServlet.

https://github.com/jersey/jersey/blob/2.25/examples/helloworld-spring-webapp/src/main/webapp/WEB-INF/web.xml

The last example includes:

    <init-param>
        <param-name>javax.ws.rs.Application</param-name>
        <param-value>org.glassfish.jersey.examples.helloworld.spring.MyApplication</param-value>
    </init-param>

and in MyApplication class it extends ResourceConfig and register RequestContextFilter.class.

My questions are.

1-)What is the main difference between two web.xml configuration?

2-)Why the second example extends ResourceConfig and register RequestContextFilter.class ?

Upvotes: 0

Views: 1412

Answers (1)

sharpcodes
sharpcodes

Reputation: 143

A jersey ServletContainer(SpringServlet in this case) can be initialized in multiple ways..

The first example just registers the package to look for the required resource since it's a simplified example.

However in cases where you need to define multiple configurations, that can be done using an init parameter with the name ServletProperties.JAXRS_APPLICATION_CLASS that refers to a class implementing Application.

This Application instance(org.glassfish.jersey.examples.helloworld.spring.MyApplication) can define all servlet level configurations like mappers,filters etc.

Upvotes: 0

Related Questions