java - 如何在Lucene索引中搜索俄语文本？

Question

我不明白我错在哪里。我的代码，其中“/home/test/03m8894---20070213134234.txt” - 包含英文文本的文件，和“/home/test/01---20061121103506.txt” - 包含俄语文本的文件。这两个文件均采用 UTF-8 编码。程序执行结果:10即该程序仅查找英语文本，而忽略俄语文本。尽管如果你这样做

            for (int m = 0; m <totalDocs; m + +) { 

            Document thisDoc = reader.document (m); 
            System.out.print (thisDoc.get ("partnum")); 

文本字段partnum正确，屏幕上的输出编码没有错误。

 RAMDirectory directory = new RAMDirectory();

        IndexWriter writer =
                //new IndexWriter(directory, new SimpleAnalyzer(), true, IndexWriter.MaxFieldLength.UNLIMITED);
                new IndexWriter(directory, new RussianAnalyzer(Version.LUCENE_30), true, IndexWriter.MaxFieldLength.UNLIMITED);
        File f1[] = {new File("/home/test/03m8894---20070213134234.txt"), new File("/home/test/01---20061121103506.txt")};

        String strLine1 = "";
        for (int x = 0; x < f1.length; x++) {
            Document doc = new Document();
            int length = (int) f1[x].length();
            if (length != 0) {
                char[] cbuf = new char[length];
                InputStreamReader isr = new InputStreamReader(new FileInputStream(f1[x]));
                final int read = isr.read(cbuf);
                strLine1 = new String(cbuf, 0, read);
                isr.close();
                doc.add(new Field("partnum", strLine1, Field.Store.YES, Field.Index.NOT_ANALYZED));
                //doc.add(new Field("description", "Illidium Space Modulator", Field.Store.YES, Field.Index.ANALYZED));
                writer.addDocument(doc);
            }

        }
writer.close();

        IndexSearcher searcher = new IndexSearcher(directory);
        IndexReader reader = searcher.getIndexReader();
        int totalDocs = reader.numDocs();



        for (int m = 0; m < totalDocs; m++) {

            Document thisDoc = reader.document(m);

     String tmp_str=thisDoc.get("partnum");

     Query query = new TermQuery(new Term("partnum", tmp_str));

     TopDocs rs = searcher.search(query, null, 10);
            System.out.println(rs.totalHits);

Answer 1

您说文件是 UTF-8 编码的，但您使用:

InputStreamReader isr = new InputStreamReader(new FileInputStream(f1[x]));

这依赖于默认编码，该编码可能不是 UTF-8。尝试:

InputStreamReader isr = new InputStreamReader(new FileInputStream(f1[x]), "UTF-8");