1
我想索引使用Lucene 4.2的一组文档。我创建了一个自定义的分析，不记号化和不小写的术语，用下面的代码：索引字段的Lucene 4.2分析器
public class NoTokenAnalyzer extends Analyzer{
public Version matchVersion;
public NoTokenAnalyzer(Version matchVersion){
this.matchVersion=matchVersion;
}
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
// TODO Auto-generated method stub
//final Tokenizer source = new NoTokenTokenizer(matchVersion, reader);
final KeywordTokenizer source=new KeywordTokenizer(reader);
TokenStream result = new LowerCaseFilter(matchVersion, source);
return new TokenStreamComponents(source, result);
}
}
我使用分析器来构建指数（灵感来自了Lucene文档中提供代码）：
public static void IndexFile(Analyzer analyzer) throws IOException{
boolean create=true;
String directoryPath="path";
File folderToIndex=new File(directoryPath);
File[]filesToIndex=folderToIndex.listFiles();
Directory directory=FSDirectory.open(new File("index path"));
IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_42, analyzer);
if (create) {
// Create a new index in the directory, removing any
// previously indexed documents:
iwc.setOpenMode(OpenMode.CREATE);
} else {
// Add new documents to an existing index:
iwc.setOpenMode(OpenMode.CREATE_OR_APPEND);
}
IndexWriter writer = new IndexWriter(directory, iwc);
for (final File singleFile : filesToIndex) {
//process files in the directory and extract strings to index
//..........
String field1;
String field2;
//index fields
Document doc=new Document();
Field f1Field= new Field("f1", field1, TextField.TYPE_STORED);
doc.add(f1Field);
doc.add(new Field("f2", field2, TextField.TYPE_STORED));
}
writer.close();
}
与代码的问题是，索引字段没有被标记化的，但是它们也未小写的，即，似乎在索引期间未施加分析仪。 我不明白什么是错的？我如何使分析仪工作？