关于4.0的Update Index ，Create Index
/*
* Create Index
*/
public static void createIndex() throws IOException{ try {
Directory directory=FSDirectory.open(new File(indexPath));
IndexWriterConfig config=new IndexWriterConfig(Version.LUCENE_44,analyzer);
config.setOpenMode(OpenMode.CREATE_OR_APPEND);
IndexWriter writer=new IndexWriter(directory,config);
Document document=new Document();
document.add(new org.apache.lucene.document.TextField("content",strBuilder.toString(),Store.YES));
document.add(new org.apache.lucene.document.StringField("path", indexPath, Store.YES));
document.add(new org.apache.lucene.document.StringField("name", "lucene", Store.YES));
writer.addDocument(document);
writer.close(); } catch (Exception e) {
// TODO: handle exception
System.out.println("created index fail");
e.printStackTrace();
}
}
/**
* update Index
* */
public static void updateIndex() throws Exception{
Document document = new Document();
iW_config=new IndexWriterConfig(Version.LUCENE_44,analyzer);
iW_config.setOpenMode(OpenMode.CREATE_OR_APPEND);
directory=FSDirectory.open(new File(indexPath));
writer=new IndexWriter(directory,iW_config);
document=searchDocument("name","lucene");
document.removeField("name"); //更新所以必须在Document中删除了才能奇效
document.add(new StringField("name", "anewfile", Store.YES));
writer.updateDocument(new Term("name","lucene"),document);//此处要指定他的值和类型
writer.commit();
writer.close();
}