Spring: How to inject a property with a non-setter method? - spring

Question

Is it possible to inject a property bean through a method with a signature doesn't start with set?
Specifically, I'm trying to use Spring to configure an embedded Jetty instance and I need to be able to inject a servlet bean via an addServlet() method.

Answer 1

I am looking at Jetty/Tutorial/Embedding Jetty documentation. I guess you mean calling ServletContextHandler.addServlet(). You have few choices:
#Configuration (since 3.0)
My favourite approach. You can configure everything using Java!
#Configuration
public class Jetty {
#Bean(initMethod = "start")
public Server server() {
Server server = new Server(8080);
server.setHandler(context());
return server;
}
#Bean
public ServletContextHandler context() {
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setContextPath("/");
context.addServlet(servlet(), "/*");
return context;
}
#Bean
public ServletHolder servletHolder() {
return new ServletHolder(helloServlet());
}
#Bean
public HelloServlet helloServlet() {
return new HelloServlet();
}
}
Inheritance/decorating
You can inherit from or wrap original ServletContextHandler class to follow Java bean naming conventions. Of course it requires an extra class, but makes Jetty class Spring-friendly. You can even publish such wrapper or maybe someone already did that?
MethodInvokingFactoryBean
I don't like this approach as it seems too low level. Basically you create a bean that calls arbitrary method with arbitrary arguments:
<bean id="javaVersion" class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="targetObject" ref="servletContextHandler"/>
<property name="targetMethod" value="addServlet"/>
<property name="arguments">
<list>
<ref bean="yourServlet"/>
</list>
</property>
</bean>

Answer 2

just the spring file adapted to Jetty 7. It's possible to add yours contextHandlers...
<bean id="contexts"
class="org.eclipse.jetty.server.handler.ContextHandlerCollection" />
<context:property-placeholder location="src/main/resources/ws.properties" />
<!-- Manually start server after setting parent context. (init-method="start") -->
<bean id="jettyServer" class="org.eclipse.jetty.server.Server"
destroy-method="stop">
<property name="threadPool">
<bean id="ThreadPool" class="org.eclipse.jetty.util.thread.QueuedThreadPool">
<property name="minThreads" value="10" />
<property name="maxThreads" value="50" />
</bean>
</property>
<property name="connectors">
<list>
<bean id="Connector" class="org.eclipse.jetty.server.nio.SelectChannelConnector">
<property name="port" value="8181" />
</bean>
</list>
</property>
<property name="handler">
<bean id="handlers" class="org.eclipse.jetty.server.handler.HandlerCollection">
<property name="handlers">
<list>
<ref bean="contexts" />
<bean id="defaultHandler" class="org.eclipse.jetty.server.handler.DefaultHandler" />
<bean class="org.eclipse.jetty.servlet.ServletContextHandler"
p:contextPath="/${ws.context.path}">
<property name="sessionHandler">
<bean class="org.eclipse.jetty.server.session.SessionHandler" />
</property>
<property name="servletHandler">
<bean class="org.eclipse.jetty.servlet.ServletHandler">
<property name="servlets">
<list>
<bean class="org.eclipse.jetty.servlet.ServletHolder"
p:name="spring-ws">
<property name="servlet">
<bean
class="org.springframework.ws.transport.http.MessageDispatcherServlet" />
</property>
<property name="initParameters">
<map>
<entry key="contextConfigLocation" value="classpath:/spring-ws-context.xml" />
</map>
</property>
</bean>
</list>
</property>
<property name="servletMappings">
<list>
<bean class="org.eclipse.jetty.servlet.ServletMapping"
p:servletName="spring-ws" p:pathSpec="/*" />
</list>
</property>
</bean>
</property>
</bean>
<bean class="org.eclipse.jetty.server.handler.RequestLogHandler" />
</list>
</property>
</bean>
</property>
</bean>