CODEWITHSUNDEEP
javamavenjerseyinitializationservlet-container
user3113547
user3113547

Reputation:

Can Jersey's ServletContainer init method be overridden?

Writing a Web Service in Java (Jersey/Maven). I'd like to construct a class that builds a number of databases before the application is deployed - as all of its resources depend on those databases. Although there is a textual representation of the Jersey's ServletContainer source code, it has already been compiled into bytecode and packed into a jar and, thus, cannot be edited. Is the solution as simple as declaring an instance of the ServletContainer class in my code and overriding the init method there?

Upvotes: 1

Views: 1118

Answers (1)

Paul Samsotha
Paul Samsotha

Reputation: 208944

You can just do all your initialization in the ResourceConfig. 

package org.foo;

public class AppConfig extends ResourceConfig {
    public AppConfig() {
        // initialize here
        packages("the.packages.to.scan");
    }
}

And you can declare it in the web.xml

<web-app>
    <servlet>
        <servlet-name>MyApplication</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>org.foo.AppConfig</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>MyApplication</servlet-name>
        <url-pattern>/api/*</url-pattern>
    </servlet-mapping>
</web-app>

For other deployment options see Servlet-based Deployment

Upvotes: 1

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