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From: "Tong, Gary \(FID\)" <Gary.Tong@morganstanley.com>
To: <dev@cxf.apache.org>
Date: Mon, 22 Dec 2008 15:51:27 +0000
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Subject: Issue with multiple CXF servlets (and proposed fix)
Thread-Topic: Issue with multiple CXF servlets (and proposed fix)
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Hello,

I'm having issues with creating multiple CXFServlets.  I'm trying to =
insantiate 2 independent CXF servlets and deploy them at different URLs. =
 The relevant part of the web.xml looks like:

  <servlet>
    <servlet-name>test</servlet-name>
    =
<servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class=
>
    <load-on-startup>1</load-on-startup>
    <init-param>
      <param-name>config-location</param-name>
      <param-value>/WEB-INF/test-servlet.xml</param-value>
    </init-param>
  </servlet>

  <servlet-mapping>
    <servlet-name>test</servlet-name>
    <url-pattern>/t/*</url-pattern>
  </servlet-mapping>

  <servlet>
    <servlet-name>foo</servlet-name>
    =
<servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class=
>
    <load-on-startup>1</load-on-startup>
    <init-param>
      <param-name>config-location</param-name>
      <param-value>/WEB-INF/foo-servlet.xml</param-value>
    </init-param>
  </servlet>

  <servlet-mapping>
    <servlet-name>foo</servlet-name>
    <url-pattern>/f/*</url-pattern>
  </servlet-mapping>

This, unfortunately, doesn't work.  My test-servlet.xml file looks like:

<?xml version=3D"1.0"?>
<beans xmlns=3D"http://www.springframework.org/schema/beans"
       xmlns:xsi=3D"http://www.w3.org/2001/XMLSchema-instance"
       xmlns:jaxrs=3D"http://cxf.apache.org/jaxrs"
       xsi:schemaLocation=3D"
http://www.springframework.org/schema/beans =
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd">

  <import resource=3D"classpath:META-INF/cxf/cxf.xml" />
  <import =
resource=3D"classpath:META-INF/cxf/cxf-extension-jaxrs-binding.xml" />
  <import resource=3D"classpath:META-INF/cxf/cxf-servlet.xml" />

  <jaxrs:server id=3D"cxfMapping" address=3D"/">
    <jaxrs:serviceBeans>
      <ref bean=3D"testController"/>
    </jaxrs:serviceBeans>
    <jaxrs:extensionMappings>
      <entry key=3D"xml" value=3D"application/xml" />
    </jaxrs:extensionMappings>
  </jaxrs:server>

  <bean id=3D"testController" class=3D"test.TestController"/>

</beans>

And foo-servlet.xml looks much the same.  This configuration gives me a =
"No service was found." response.  However, if I move the import =
statements to the base spring application context, both the test and foo =
servlets end up serving up test-servlet.xml and foo-servlet.xml gets =
ignored.

As far as I can tell, this problem occurs because the configs specified =
in config-location aren't loaded until the majority of the servlet has =
been initialized.  Because of this, most of the settings in =
test-servlet.xml and foo-servlet.xml are ignored during initialization.

The order of initialization in CXFServlet seems to be:

1. Find the spring app context.
2. Create a new bus based on the app context.
3. Set up the servlet transport factory
4. Create the controller
5. Load the additional configuration from the config-location servlet =
param

My proposed fix is to change the order of initialization to:

1. Find the spring app context.
2. Load the additional configuration from the config-location servlet =
param
3. Create a new bus based on the new child context (or original spring =
app context if there is no additional configuration)
4. Set up the servlet transport factory
5. Create the controller

The attached diff does this and fixes the problem that I have with =
creating two CXFServlets.  Hopefully this is the right way to do this.

Thanks,
Gary
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