LuceneIndexing中的Document和Field实例重用

您不需要在每次迭代时将字段添加到doc.添加字段一次后,您需要做的就是更改字段值,然后将更改的文档写入索引,如下所示:

Document doc = new Document();
Field field1 = new TextField("field1", field1Value, Field.Store.YES);
doc.add(field1);
Field field2 = new StringField("field2", field2Value,Field.Store.YES);
doc.add(field2);
while ((line = br.readLine()) != null) {
    field1.setStringValue("field1Value");
    field2.setStringValue("field2Value");

    writer.addDocument(doc);
}