On 9/3/2015 8:11 PM, Firas Khasawneh wrote:
> I am trying to use SolrHttpClient in solrj 5.3.0 but I am getting the
> following execption:
>
> Caused by: java.lang.VerifyError: Bad return type
> Exception Details:
> Location:
>
> org/apache/solr/client/solrj/impl/HttpClientUtil.createClient(Lorg/apache/solr/common/params/SolrParams;)Lorg/apache/http/impl/client/CloseableHttpClient;
> @57: areturn
> Reason:
> Type 'org/apache/http/impl/client/SystemDefaultHttpClient' (current
> frame, stack[0]) is not assignable to
> 'org/apache/http/impl/client/CloseableHttpClient' (from method signature)
> Current Frame:
> bci: @57
> flags: { }
> locals: { 'org/apache/solr/common/params/SolrParams',
> 'org/apache/solr/common/params/ModifiableSolrParams',
> 'org/apache/http/impl/client/SystemDefaultHttpClient' }
> stack: { 'org/apache/http/impl/client/SystemDefaultHttpClient' }
>
> I added httpcore-4.4.1.jar and httclient-4.4.1.jar to classpath but the issue
> is still there. Any help is appreciated.
In SolrJ 5.3.0, the createClient method returns a CloseableHttpClient.
It sounds like your code is trying to assign the result of the
createClient method to an object of type SystemDefaultHttpClient. This
is a derivative type of CloseableHttpClient. This would work if the
derivation were the other direction.
The compiler is saying that you cannot make this assignment. I tried to
put these code lines into a SolrJ program:
SystemDefaultHttpClient sc;
sc = HttpClientUtil.createClient(someParams);
After making sure all the imports were present, Eclipse did NOT like
this code, saying "Type mismatch: cannot convert from
CloseableHttpClient to SystemDefaultHttpClient".
Compatible types for the target object include "HttpClient" and
"CloseableHttpClient".
Thanks,
Shawn
