Hallo everybody,
I had a problem with lucene demo on my webhosting account. Because I think
more people have the same problem,and perhaps somebody will get the same
problem in the futurek, so now I want describe how I solved it!
Well in my case I used a lucene webdemo on my homepc with windows xp and tomcat
3.3.2. the lucene webdemo worked perfectly on my homepc. After uploading these
on a real webserver , it didn't work because for every search I had null
results. So I found a solution-not a good one-but it works: I indexed my data
on the webhostingaccount. Of course it is a bad solution, because for big
amounts of data it is complicated to upload all documents you need.
But for test cases it works. Here are my scripts:
The one for index:
<%@ page import="
org.apache.lucene.analysis.Analyzer,org.apache.lucene.analysis.standard.StandardAnalyzer,org.apache.lucene.document.Document,org.apache.lucene.document.Field,org.apache.lucene.index.IndexWriter"
%>
<%
String[] text = { "index", "lucene","ramon","gasi" };
String indexDir = "path/onthe/webserver";
Analyzer analyzer = new StandardAnalyzer();
boolean create = true;
IndexWriter writer = new IndexWriter(indexDir, analyzer, create);
for (int i = 0; i < text.length; i++)
{
Document document = new Document();
document.add(Field.Text("textfeld", text[i]));
writer.addDocument(document);
}
writer.close();
%>
The another one for searching:
<%@ page import = " javax.servlet.*, javax.servlet.http.*, java.io.*,
org.apache.lucene.analysis.*, org.apache.lucene.document.*,
org.apache.lucene.index.*, org.apache.lucene.search.*,
org.apache.lucene.queryParser.*,java.net.URLEncoder" %>
<%
String indexName ="path/onthe/webserver"; //local copy of the
configuration variable
IndexSearcher searcher = null; //the searcher used to
open/search the index
Query query = null;
String myQuery="lucene";
Hits hits = null;
searcher = new IndexSearcher(IndexReader.open(indexName));
Analyzer analyzer = new StopAnalyzer();
query = QueryParser.parse(myQuery,"textfeld",analyzer);
hits = searcher.search(query);
if (hits.length() == 0) {
%>
<p> Nothing found </p>
<%
}
else
{
%>
<p>Some results found</p>
<%
for(int i=0;i<hits.length();i++)
{
Document doc = hits.doc(i);
String textfeld = doc.get("textfeld");
out.println(textfeld);
}
}
%>
This is a very simple example for newbies in lucene, I hope this will be a
little helpful for somebody.
Greetings
Gaston
