Using Solr Spellchecker from Java

Continuing from my prevoius post Implementing Spellchecker in Solr , we'll now see how to use SorlJ API to fetch spellcheck suggestions through a Java program.

public static Map<String, List<String>> getSuggestions(String queryStr){
if (queryStr != null &&  !queryStr.isEmpty()) {

try {

SolrServer server = new HttpSolrServer("http://localhost:8983/solr");


   ModifiableSolrParams params = new ModifiableSolrParams();
   params.set("qt", "/spell");
   params.set("q", queryStr);
   params.set("spellcheck", "true");
   params.set("spellcheck.collate", "true");


   QueryResponse response = server.query(params);
   System.out.println("response = " + response);

   if(response != null){
      SpellCheckResponse scr = response.getSpellCheckResponse();
    if(scr != null){
    List<Suggestion> suggLst = scr.getSuggestions();
    for(Suggestion sugg : suggLst){
    System.out.println("Suggestion for token"+sugg.getToken()+" are: ");
System.out.println(sugg.getAlternatives());
}
             System.out.println("Collated Result: "+scr.getAlternatives());
    }
   }
}
catch(Exception e){
e.printStackTrace();
}
}
return suggestionsMap;
}

You can download a copy of complete Java Program from here.


To run the above program you will need the following jar files

• apache-solr-solrj-3.6.0.jar (I am using Solr 3.6.0)
• httpclient-4.jar
• httpcore-4.jar
• httpmime-4.1.2.jar
• slf4j-log4j12-1.0.jar
• commons-logging.jar
• log4j.jar