嗨,我试图运行这个代码,我似乎可以弄清楚出了什么问题。我很新闻solrj
import org.apache.solr.common.SolrDocument;
import java.util.Map;
import org.apache.solr.common.SolrDocumentList;
import org.apache.solr.common.SolrDocument;
import java.util.Map;
import java.util.Iterator;
import java.util.List;
import java.util.ArrayList;
import java.util.HashMap;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.impl.CommonsHttpSolrServer;
import org.apache.solr.client.solrj.impl.HttpSolrServer;
import org.apache.solr.client.solrj.response.QueryResponse;
import org.apache.solr.client.solrj.response.FacetField;
public class SolrjTest
{
public void query(String q)
{
//CommonsHttpSolrServer server = null;
SolrServer server = null;
try
{
server = new HttpSolrServer("http://localhost:8983/solr/");
//server = new CommonsHttpSolrServer("http://localhost:8080/solr/");
System.out.println("connected");
}
catch(Exception e)
{
System.out.println("not connected");
e.printStackTrace();
}
SolrQuery query = new SolrQuery();
query.setQuery(q);
query.setQueryType("camera");
query.setFacet(true);
query.addFacetField("name");
query.addFacetField("locality4");
query.setFacetMinCount(2);
query.setIncludeScore(true);
try
{
QueryResponse qr = server.query(query);
SolrDocumentList sdl = qr.getResults();
System.out.println("Found: " + sdl.getNumFound());
System.out.println("Start: " + sdl.getStart());
System.out.println("Max Score: " + sdl.getMaxScore());
System.out.println("--------------------------------");
ArrayList<HashMap<String, Object>> hitsOnPage = new ArrayList<HashMap<String, Object>>();
for(SolrDocument d : sdl)
{
HashMap<String, Object> values = new HashMap<String, Object>();
for(Iterator<Map.Entry<String, Object>> i = d.iterator(); i.hasNext(); )
{
Map.Entry<String, Object> e2 = i.next();
values.put(e2.getKey(), e2.getValue());
}
hitsOnPage.add(values);
System.out.println(values.get("displayname") + " (" + values.get("displayphone") + ")");
}
List<FacetField> facets = qr.getFacetFields();
for(FacetField facet : facets)
{
List<FacetField.Count> facetEntries = facet.getValues();
for(FacetField.Count fcount : facetEntries)
{
System.out.println(fcount.getName() + ": " + fcount.getCount());
}
}
}
catch (SolrServerException e)
{
e.printStackTrace();
}
}
public static void main(String[] args)
{
SolrjTest solrj = new SolrjTest();
solrj.query(args[0]);
}
}
我有这个错误
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
at SolrjTest.main(SolrjTest.java:98)
它指向:
solrj.query(args[0]);
每当我在solrj
中运行示例程序时,我还有一个额外的问题原因{time=218.0,sub1={time=125.0,sub1.1={time=31.0}}}
你能告诉我这意味着什么以及关于数组越界的错误吗?在此先感谢真的需要这个,并且不太了解solrj
答案 0 :(得分:0)
原因是您在程序执行开始时没有提供任何运行时参数。
在solrj.query(args[0]);
中,args
是指传递给程序的参数,如:
java MyClass abc def
所以在上面的例子中args
将是:
args[0] -----> "abc"
args[1] -----> "def"
因此,请确保在执行程序时传递正确的参数。