lucene学习之创建索引

1.创建indexWriter

Directory d = FSDirectory.open(Paths.get("D:/lucene/index"));

SmartChineseAnalyzer analyzer = new SmartChineseAnalyzer();

IndexWriterConfig iwc = new IndexWriterConfig(analyzer);
writer = new IndexWriter(d, iwc);

2.添加文档

for(int i=0;i<ids.length;i++){

Document  doc = new Document();

doc.add(new StringField("city", citys[i], Field.Store.YES));

doc.add(new StringField("id", ids[i], Field.Store.YES));

doc.add(new TextField("desc",descs[i],Field.Store.YES));
writer.addDocument(doc);

}

这里的field可以加权，field.setBoost（1.5f）默认为1.0

3.一些更新和删除

writer.deleteAll();

writer.deleteDocuments(Term term);

writer.forceMergeDeletes();

writer.forceMerge(int maxNumSegments);

writer.updateDocument();

writer.commit();