Problem with HttpSolrClient.Builder on Windows with tomcat

[Raivo Rebane]

Hello

I have problem with HttpSolrClient.Builder on Windows with tomcat

I have follwing code lines in my programm:
System.out.println("Trying HttpSolrClient = " + url );
LibraryServlet.solrClientClient = new 
HttpSolrClient.Builder(url).withConnectionTimeout(5000).withSocketTimeout(3000).build();

System.out.println("Trying HttpSolrClient sucessfull ");

and project WEB-INF/lib contains following jars:
commons-codec-1.15.jar*
commons-httpclient-3.1.jar*
commons-io-1.4.jar*
httpclient5-5.0.3.jar
slf4j-api-1.8.0-beta4.jar
slf4j-log4j12.jar*
solr-solrj-8.6.3.jar*

On Ubuntu I have following tomcat output
Trying HttpSolrClient = http://localhost:8983/solr/clients
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#noProviders for further details.
SLF4J: Class path contains SLF4J bindings targeting slf4j-api versions 
prior to 1.8.
SLF4J: Ignoring binding found at 
[jar:file:/home/hydra/Librarian/target/Librarian/WEB-INF/lib/slf4j-log4j12.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Ignoring binding found at 
[jar:file:/opt/tomcat/apache-tomcat-9.0.38/lib/nlog4j-1.2.19.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Ignoring binding found at 
[jar:file:/opt/tomcat/apache-tomcat-9.0.38/lib/logback-classic-1.1.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#ignoredBindings for an 
explanation.

Trying HttpSolrClient sucessfull

But on Windows tomcat I have only one line:
Trying HttpSolrClient = http://localhost:8983/solr/clients

and it's hangs !!!

What is the reason ?

Regards
Raivo

Re: HttpSolrClient.Builder

[Shawn Heisey]

On 10/18/2016 2:39 PM, wmcgin...@cox.net wrote:
> What causes this?
> Exception in thread "main" java.lang.NoClassDefFoundError: 
> org/apache/http/impl/client/CloseableHttpClient
>   at 
> org.apache.solr.client.solrj.impl.HttpSolrClient.(HttpSolrClient.java:209)
>   at 
> org.apache.solr.client.solrj.impl.HttpSolrClient$Builder.build(HttpSolrClient.java:874)

This is most likely caused by having multiple versions of jars on your
classpath.  You've probably got an older version of the HttpComponents
jars (httpclient, httpmime, httpcore) somewhere that's missing a class
that SolrJ needs from the newer version.  The correct jar versions can
be found included with Solr.

> The code is:
> return new HttpSolrClient.Builder(urlString).build();
> After connecting to a Solr server, should I call solrServer.close();
> or
> should I leave the connection open until the entire index is built?

The intent is that the client object will be created once and used in
the program until it stops running.  Many users *never* close the
client.  It can also be shared by multiple threads with no problems.

Thanks,
Shawn

HttpSolrClient.Builder

[wmcginnis]

What causes this?
Exception in thread "main" java.lang.NoClassDefFoundError: 
org/apache/http/impl/client/CloseableHttpClient
at 
org.apache.solr.client.solrj.impl.HttpSolrClient.(HttpSolrClient.java:209)
at 
org.apache.solr.client.solrj.impl.HttpSolrClient$Builder.build(HttpSolrClient.java:874)

The code is:
return new HttpSolrClient.Builder(urlString).build();
After connecting to a Solr server, should I call solrServer.close();
or
should I leave the connection open until the entire index is built?