创建索引后,您可以使用拼写检查器使用的字典创建索引:
public void createSpellChekerIndex() throws CorruptIndexException,
IOException {
final IndexReader reader = IndexReader.open(this.indexDirectory, true);
final Dictionary dictionary = new LuceneDictionary(reader,
LuceneExample.FIELD);
final SpellChecker spellChecker = new SpellChecker(this.spellDirectory);
final Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_36);
final IndexWriterConfig writerConfig = new IndexWriterConfig(
Version.LUCENE_36, analyzer);
spellChecker.indexDictionary(dictionary, writerConfig, true);
spellChecker.close();
}
然后请求一个建议数组:
public String[] getSuggestions(final String queryString,
final int numberOfSuggestions, final float accuracy) {
try {
final SpellChecker spellChecker = new SpellChecker(
this.spellDirectory);
final String[] similarWords = spellChecker.suggestSimilar(
queryString, numberOfSuggestions, accuracy);
return similarWords;
} catch (final Exception e) {
return new String[0];
}
}
示例:
索引以下文档后:
luceneExample.index("spell checker");
luceneExample.index("did you mean");
luceneExample.index("hello, this is a test");
luceneExample.index("Lucene is great");
并使用上述方法创建拼写索引,我尝试搜索字符串“lucete”并寻求建议
final String query = "lucete";
final String[] suggestions = luceneExample.getSuggestions(query, 5,
0.2f);
System.out.println("Did you mean:\n" + Arrays.toString(suggestions));
这是输出:
Did you mean:
[lucene]