Hi
I write a plugin to index contents reusing our DAO layer which is developed
using Spring.
What I am doing now is putting the plugin jar and all other depending jars
of DAO layer to shared lib folder under solr home.
In the log, I can see all the jars are loaded through SolrResourceLoader
like:
INFO - 2013-10-16 16:25:30.611; org.apache.solr.core.SolrResourceLoader;
Adding 'file:/D:/apache-tomcat-7.0.42/solr/lib/spring-tx-3.1.0.RELEASE.jar'
to classloader
Then initialize the Spring context using:
ApplicationContext context = new
FileSystemXmlApplicationContext("/solr/spring/solr-plugin-bean-test.xml");
Then Spring will complain:
INFO - 2013-10-16 16:33:57.432;
org.springframework.context.support.AbstractApplicationContext; Refreshing
org.springframework.context.support.FileSystemXmlApplicationContext@e582a85:
startup date [Wed Oct 16 16:33:57 CST 2013]; root of context hierarchy
INFO - 2013-10-16 16:33:57.491;
org.springframework.beans.factory.xml.XmlBeanDefinitionReader; Loading XML
bean definitions from file
[D:\apache-tomcat-7.0.42\solr\spring\solr-plugin-bean-test.xml]
ERROR - 2013-10-16 16:33:59.944;
com.test.search.solr.spring.AppicationContextWrapper; Configuration
problem: Unable to locate Spring NamespaceHandler for XML schema namespace [
http://www.springframework.org/schema/context]
Offending resource: file
[D:\apache-tomcat-7.0.42\solr\spring\solr-plugin-bean-test.xml]
Spring context requires spring-tx-3.1.xsd which does exist
in spring-tx-3.1.0.RELEASE.jar under
"org\springframework\transaction\config\" package, but the program can't
find it even though it could load spring classes successfully.
The following won't work either.
ApplicationContext context = new
ClassPathXmlApplicationContext("classpath:spring/solr-plugin-bean-test.xml");
//the solr-plugin-bean-test.xml is packaged in plugin.jar as well.
But when I but all the jars under TOMECAT_HOME/webapp/solr/WEB-INF/lib, and
using
ApplicationContext context = new
ClassPathXmlApplicationContext("classpath:spring/solr-plugin-bean-test.xml");
everything works fine, I could initialize spring context and load DAO beans
to read data and then write them to solr index. But isn't modifying
solr.war a bad practice?
It seems SolrResourceLoader only loads classes from plugins jars but these
jars are NOT in classpath. Please correct me if I am wrong,
Is there any ways to use resources in plugin jars such as configuration
file?
BTW is there any difference between SolrResourceLoader with tomcat webapp
classLoader?
--
All the best
Liu Bo
