建索引：
使用的對象和基本步驟：
Analyzer，解析器。
IndexWriter，需要對象IndexWriter來進行索引的創建與更新。
Document，寫入的文檔，是IndexWriter的基本對象。（一條報警可以用一個文檔表示）
Field，一個Document可以有多個Field，這是我們存儲的基本單位。（PCIP等都可以視爲Field）注：field默認域名區分大小寫，最好統一。
A. 創建寫對象IndexWriter，它依賴於Analyzer、存儲路徑，可通過IndexWriterConfig對其進行參數設置。
B. 創建空文檔Document doc = newDocument();
C. 向空文檔裏面添加若干個Field，doc.add(new Field("PCIP", fields[0],Field.Store.YES, Field.Index.ANALYZED_NO_NORMS));
注：
Field參數STORE，與索引無關，是否額外存儲原文 ，可以在搜索結果後調用出來，
NO不額外存儲；
YES，額外存儲。
Field參數INDEX，
NO，不索引；
ANALYZED，分詞後索引；
ANALYZED_NO_NORMS，分詞索引，不存儲NORMS；
NOT_ANALYZED_NO_NORMS，不分詞，索引，不存儲NORMS。
除了NO外都算索引，可以搜索。NORMS存儲了boost所需信息，包含了NORM可能會佔用更多內存。
D. 向IndexWriter添加Document，writer.addDocument(doc);
E. 優化索引（優化相對比較慢，可以選擇進行，優化之後可以達到最大查詢速度，//writer.optimize();//優化索引
importorg.apache.lucene.analysis.Analyzer;
importorg.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
importorg.apache.lucene.index.CorruptIndexException;
importorg.apache.lucene.index.IndexWriter;
importorg.apache.lucene.index.IndexWriterConfig;
importorg.apache.lucene.index.Term;
importorg.apache.lucene.store.Directory;
importorg.apache.lucene.store.FSDirectory;
importorg.apache.lucene.store.LockObtainFailedException;
importorg.apache.lucene.util.Version;我使用當中主要發生的變化已經用紅色標記出
@SuppressWarnings("deprecation")
public void BuildLawyerPublic(ResponseList<SearchLawyer> lawyerList,
String path, boolean overwrite, Date start, Date end) {
IndexWriter indexWriter = null;
try {
try {
Analyzer analyzer = new IKAnalyzer();//分詞類變爲新的
IndexWriterConfig indexWriterConfig = new IndexWriterConfig(Version.LUCENE_33, analyzer);//indexWrite配置新的
Directory dir =FSDirectory.open(new File(path)) ;//地址
indexWriterConfig.setOpenMode(IndexWriterConfig.OpenMode.CREATE);//總是重新創建
indexWriter = new IndexWriter(dir,indexWriterConfig);//新的方法
} catch (IOException e) {
e.printStackTrace();
this.BuildAll();
return;
}
long count = 0;
long startTime = new Date().getTime();
for (int i = 0; i < lawyerList.size(); i++) {
// 按小時或天建立索弄1�7
if (path == hoursDir || path == dailyDir) {
SearchLawyer lawyerBean = new SearchLawyer();
BeanUtils.copyProperties(lawyerList.get(i), lawyerBean);
// 更新索引
if (((SearchLawyer) lawyerList.get(i)).getJoinDate()
.before(start)) {
Term term = new Term("consultID", String
.valueOf(((SearchLawyer) lawyerList.get(i))
.getLawyerID()));
indexWriter.updateDocument(term,
convert2Doc(lawyerBean));
update_count++;
} else {// 新增索引
indexWriter.addDocument(convert2Doc(lawyerBean));
add_count++;
}
} else {
// 第一次建立索弄1�7
SearchLawyer lawyerBean = (SearchLawyer) lawyerList.get(i);
if (lawyerBean != null) {
Document hdoc = convert2Doc(lawyerBean);
indexWriter.addDocument(hdoc);
}
count++;
}
}
indexWriter.optimize();
indexWriter.close();
long endTime = new Date().getTime();
logger.debug("It takes " + (endTime - startTime)
+ "ms index count :" + count
+ " consultpublic count:==============="
+ lawyerList.size());
} catch(CorruptIndexException e) {
logger.error("{}", e);
e.printStackTrace();
} catch(LockObtainFailedException e) {
logger.error("{}", e);
e.printStackTrace();
} catch (IOException e) {
logger.error("{}", e);
e.printStackTrace();
}
}
//bean 2
public Document convert2Doc(SearchLawyer lawyer) {
Document doc = new Document();
try {
// 律師主鍵
doc.add(new Field("lawyerID", String.valueOf(lawyer.getLawyerID()),
Field.Store.YES, Field.Index.NO));//NO，不索引＄1�7
// 律師姓名
doc.add(new Field("fullName", String.valueOf(lawyer.getFullName()),
Field.Store.YES, Field.Index.ANALYZED));//ANALYZED，分詞後索引
// 律師電話
doc.add(new Field("phone", String.valueOf(lawyer.getPhone()),
Field.Store.YES, Field.Index.NO));
// 律師頭像
doc.add(new Field("photo", String.valueOf(lawyer
.getPhoto()), Field.Store.YES, Field.Index.NO));
// 律師箄1�7仄1�7
doc.add(new Field("lawyer_Intro", String.valueOf(lawyer
.getLawyer_Intro()), Field.Store.YES,
Field.Index.ANALYZED));
// 律所名稱
doc.add(new Field("officeName", String
.valueOf(lawyer.getOfficeName()), Field.Store.YES,
Field.Index.NOT_ANALYZED));//NOT_ANALYZED，不分詞索引
// 律師扄1�7在省
doc.add(new Field("provinceName", String.valueOf(lawyer
.getProvinceName()), Field.Store.YES,
Field.Index.NOT_ANALYZED));
// 律師扄1�7在市
doc.add(new Field("cityName", String.valueOf(lawyer.getCityName()),
Field.Store.YES, Field.Index.NOT_ANALYZED));
// 專注類別
doc.add(new Field("specialtyName", String
.valueOf(lawyer.getSpecialtyName()), Field.Store.YES,
Field.Index.ANALYZED));
// 律師添加的時闄1�7
doc.add(new Field("joinDate", DateUtil.getDateTime(
"yyyy-MM-dd hh:mm:ss", lawyer.getJoinDate()),
Field.Store.YES, Field.Index.NO));
} catch (Exception e) {
logger.error("{}", e);
e.printStackTrace();
}
return doc;
}