在 Lucene 中找不到文件

Question

我正在通过 lucene 索引文档，创建了索引，但是当实现搜索时，得到 0 个匹配。

我不知道索引或搜索错误在哪里。

索引

Directory directory = FSDirectory.open(Paths.get("C:\indexes\teste"));
Analyzer analyzer = new StandardAnalyzer();
IndexWriterConfig config = new IndexWriterConfig(analyzer);
IndexWriter indexWriter = new IndexWriter(directory, config);

Document document = new Document();
document.add(new StringField("id", "1", Store.YES));
document.add(new StringField("name", "Pedro Henriques", Store.YES));
document.add(new StringField("displayName", "Pedro Rosa", Store.YES));
document.add(new StringField("segment", "segment xpto", Store.YES));

indexWriter.addDocument(document);
indexWriter.commit();
indexWriter.close();

directory.close();

搜索

Directory directory = FSDirectory.open(Paths.get("C:\indexes\teste"));
IndexReader reader = DirectoryReader.open(directory);
IndexSearcher searcher = new IndexSearcher(reader);
Analyzer analyzer = new StandardAnalyzer();
QueryParser parser = new QueryParser("", analyzer);
Query query = parser.parse("name:Henriques");
log.info("Consulta analisada-> " + query);

TopDocs docs = searcher.search(query, 100);
for (ScoreDoc sd : docs.scoreDocs) {
    Document doc = searcher.doc(sd.doc);
    log.info(doc.toString());
}

docs.scoreDocs 为空。

我的 Lucene 依赖项是

        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-core</artifactId>
            <version>8.2.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-analyzers-common</artifactId>
            <version>8.2.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-queries</artifactId>
            <version>8.2.0</version>
        </dependency>

        <dependency>
            <groupId>org.apache.lucene</groupId>
            <artifactId>lucene-queryparser</artifactId>
            <version>8.2.0</version>
        </dependency>

我的 Java 版本是 11.

谢谢！

Answer 1

字段“name”不能是 StringField 类型，因为这种类型的字段不能有空格、特殊字符或大写字母。

在这种情况下，使用 TextField 类型。

document.add(new TextField("name", "Pedro Henriques", Store.YES));

在 Lucene 中找不到文件

Documents are not found in Lucene

java

lucene

indexing

search

full-text-indexing