1、准备工作
下载lucene 3.6.1 ： http://lucene.apache.org/
下载中文分词IK Analyzer： http://code.google.com/p/ik-analyzer/downloads/list （注意下载的是IK Analyzer 2012_u5_source.zip，其他版本有bug）
下载solr 3.6.1： http://lucene.apache.org/solr/（编译IK Analyzer时需引用包）
OK，将lucene 、solr 相关包（lucene-core-3.6.1.jar、lucene-highlighter-3.6.1.jar、lucene-analyzers-3.6.1.jar、apache-solr-core-3.6.1.jar、apache-solr-solrj-3.6.1.jar）拷贝到项目lib下，IK源码置于项目src下。
2、从Oracle数据库中取数据创建索引（使用IK分词）
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package
lucene.util;
import
org.apache.lucene.index.IndexWriter;
import
org.apache.lucene.index.IndexWriterConfig;
import
org.apache.lucene.index.CorruptIndexException;
import
org.apache.lucene.store.FSDirectory;
import
org.apache.lucene.store.Directory;
import
org.apache.lucene.analysis.Analyzer;
import
org.apache.lucene.analysis.standard.StandardAnalyzer;
import
org.apache.lucene.util.Version;
import
org.apache.lucene.document.Document;
import
org.apache.lucene.document.Field;
import
org.wltea.analyzer.lucene.IKAnalyzer;
import
java.sql.Connection;
import
java.io.File;
import
java.io.IOException;
import
java.util.ArrayList;
import
java.util.Date;
import
modules.gk.Gk_info;
import
modules.gk.Gk_infoSub;
import
web.sys.Globals;
import
web.db.DBConnector;
import
web.db.ObjectCtl;
import
web.util.StringUtil;
//Wizzer.cn
public
class
LuceneIndex {
IndexWriter writer =
null
;
FSDirectory dir =
null
;
boolean
create =
true
;
public
void
init() {
long
a1 = System.currentTimeMillis();
System.out.println(
"[Lucene 开始执行："
+
new
Date() +
"]"
);
Connection con = DBConnector.getconecttion();
//取得一个数据库连接
try
{
final
File docDir =
new
File(Globals.SYS_COM_CONFIG.get(
"sys.index.path"
).toString());
//E:\lucene
if
(!docDir.exists()) {
docDir.mkdirs();
}
String cr = Globals.SYS_COM_CONFIG.get(
"sys.index.create"
).toString();
//true or false
if
(
"false"
.equals(cr.toLowerCase())) {
create =
false
;
}
Directory dir = FSDirectory.open(docDir);
// Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_36);
Analyzer analyzer =
new
IKAnalyzer(
true
);
IndexWriterConfig iwc =
new
IndexWriterConfig(Version.LUCENE_36, analyzer);
if
(create) {
// Create a new index in the directory, removing any
// previously indexed documents:
iwc.setOpenMode(IndexWriterConfig.OpenMode.CREATE);
}
else
{
// Add new documents to an existing index:
iwc.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND);
}
IndexWriter writer =
new
IndexWriter(dir, iwc);
String sql =
"SELECT indexno,title,describes,pdate,keywords FROM TABLEA WHERE STATE=1 AND SSTAG<>1 "
;
int
rowCount = ObjectCtl.getRowCount(con, sql);
int
pageSize = StringUtil.StringToInt(Globals.SYS_COM_CONFIG.get(
"sys.index.size"
).toString());
//每页记录数
int
pages = (rowCount -
1
) / pageSize +
1
;
//计算总页数
ArrayList list =
null
;
Gk_infoSub gk =
null
;
for
(
int
i =
1
; i < pages+
1
; i++) {
long
a = System.currentTimeMillis();
list = ObjectCtl.listPage(con, sql, i, pageSize,
new
Gk_infoSub());
for
(
int
j =
0
; j < list.size(); j++) {
gk = (Gk_infoSub) list.get(j);
Document doc =
new
Document();
doc.add(
new
Field(
"indexno"
, StringUtil.null2String(gk.getIndexno()), Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS));
//主键不分词
doc.add(
new
Field(
"title"
, StringUtil.null2String(gk.getTitle()), Field.Store.YES, Field.Index.ANALYZED));
doc.add(
new
Field(
"describes"
, StringUtil.null2String(gk.getDescribes()), Field.Store.YES, Field.Index.ANALYZED));
doc.add(
new
Field(
"pdate"
, StringUtil.null2String(gk.getPdate()), Field.Store.YES, Field.Index.NOT_ANALYZED_NO_NORMS));
//日期不分词
doc.add(
new
Field(
"keywords"
, StringUtil.null2String(gk.getKeywords()), Field.Store.YES, Field.Index.ANALYZED));
writer.addDocument(doc);
ObjectCtl.executeUpdateBySql(con,
"UPDATE TABLEA SET SSTAG=1 WHERE indexno='"
+gk.getIndexno()+
"'"
);
//更新已索引状态
}
long
b = System.currentTimeMillis();
long
c = b - a;
System.out.println(
"[Lucene "
+ rowCount +
"条，"
+ pages +
"页，第"
+ i +
"页花费时间："
+ c +
"毫秒]"
);
}
writer.commit();
}
catch
(Exception e) {
e.printStackTrace();
}
finally
{
DBConnector.freecon(con);
//释放数据库连接
try
{
if
(writer !=
null
) {
writer.close();
}
}
catch
(CorruptIndexException e) {
e.printStackTrace();
}
catch
(IOException e) {
e.printStackTrace();
}
finally
{
try
{
if
(dir !=
null
&& IndexWriter.isLocked(dir)) {
IndexWriter.unlock(dir);
//注意解锁
}
}
catch
(IOException e) {
e.printStackTrace();
}
}
}
long
b1 = System.currentTimeMillis();
long
c1 = b1 - a1;
System.out.println(
"[Lucene 执行完毕，花费时间："
+ c1 +
"毫秒，完成时间："
+
new
Date() +
"]"
);
}
}
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3、单字段查询以及多字段分页查询高亮显示
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package
lucene.util;
import
org.apache.lucene.store.FSDirectory;
import
org.apache.lucene.store.Directory;
import
org.apache.lucene.search.*;
import
org.apache.lucene.search.highlight.SimpleHTMLFormatter;
import
org.apache.lucene.search.highlight.Highlighter;
import
org.apache.lucene.search.highlight.SimpleFragmenter;
import
org.apache.lucene.search.highlight.QueryScorer;
import
org.apache.lucene.queryParser.QueryParser;
import
org.apache.lucene.queryParser.MultiFieldQueryParser;
import
org.apache.lucene.analysis.TokenStream;
import
org.apache.lucene.analysis.Analyzer;
import
org.apache.lucene.analysis.KeywordAnalyzer;
import
org.apache.lucene.document.Document;
import
org.apache.lucene.index.IndexReader;
import
org.apache.lucene.index.Term;
import
org.apache.lucene.util.Version;
import
modules.gk.Gk_infoSub;
import
java.util.ArrayList;
import
java.io.File;
import
java.io.StringReader;
import
java.lang.reflect.Constructor;
import
web.util.StringUtil;
import
web.sys.Globals;
import
org.wltea.analyzer.lucene.IKAnalyzer;
//Wizzer.cn
public
class
LuceneQuery {
private
static
String indexPath;
// 索引生成的目录
private
int
rowCount;
// 记录数
private
int
pages;
// 总页数
private
int
currentPage;
// 当前页数
private
int
pageSize;
//每页记录数
public
LuceneQuery() {
this
.indexPath = Globals.SYS_COM_CONFIG.get(
"sys.index.path"
).toString();
}
public
int
getRowCount() {
return
rowCount;
}
public
int
getPages() {
return
pages;
}
public
int
getPageSize() {
return
pageSize;
}
public
int
getCurrentPage() {
return
currentPage;
}
/**
* 函数功能:根据字段查询索引
*/
public
ArrayList queryIndexTitle(String keyWord,
int
curpage,
int
pageSize) {
ArrayList list =
new
ArrayList();
try
{
if
(curpage <=
0
) {
curpage =
1
;
}
if
(pageSize <=
0
) {
pageSize =
20
;
}
this
.pageSize = pageSize;
//每页记录数
this
.currentPage = curpage;
//当前页
int
start = (curpage -
1
) * pageSize;
Directory dir = FSDirectory.open(
new
File(indexPath));
IndexReader reader = IndexReader.open(dir);
IndexSearcher searcher =
new
IndexSearcher(reader);
Analyzer analyzer =
new
IKAnalyzer(
true
);
QueryParser queryParser =
new
QueryParser(Version.LUCENE_36,
"title"
, analyzer);
queryParser.setDefaultOperator(QueryParser.AND_OPERATOR);
Query query = queryParser.parse(keyWord);
int
hm = start + pageSize;
TopScoreDocCollector res = TopScoreDocCollector.create(hm,
false
);
searcher.search(query, res);
SimpleHTMLFormatter simpleHTMLFormatter =
new
SimpleHTMLFormatter(
"<span style='color:red'>"
,
"</span>"
);
Highlighter highlighter =
new
Highlighter(simpleHTMLFormatter,
new
QueryScorer(query));
this
.rowCount = res.getTotalHits();
this
.pages = (rowCount -
1
) / pageSize +
1
;
//计算总页数
TopDocs tds = res.topDocs(start, pageSize);
ScoreDoc[] sd = tds.scoreDocs;
for
(
int
i =
0
; i < sd.length; i++) {
Document hitDoc = reader.document(sd[i].doc);
list.add(createObj(hitDoc, analyzer, highlighter));
}
}
catch
(Exception e) {
e.printStackTrace();
}
return
list;
}
/**
* 函数功能:根据字段查询索引
*/
public
ArrayList queryIndexFields(String allkeyword, String onekeyword, String nokeyword,
int
curpage,
int
pageSize) {
ArrayList list =
new
ArrayList();
try
{
if
(curpage <=
0
) {
curpage =
1
;
}
if
(pageSize <=
0
) {
pageSize =
20
;
}
this
.pageSize = pageSize;
//每页记录数
this
.currentPage = curpage;
//当前页
int
start = (curpage -
1
) * pageSize;
Directory dir = FSDirectory.open(
new
File(indexPath));
IndexReader reader = IndexReader.open(dir);
IndexSearcher searcher =
new
IndexSearcher(reader);
BooleanQuery bQuery =
new
BooleanQuery();
//组合查询
if
(!
""
.equals(allkeyword)) {
//包含全部关键词
KeywordAnalyzer analyzer =
new
KeywordAnalyzer();
BooleanClause.Occur[] flags = {BooleanClause.Occur.SHOULD, BooleanClause.Occur.SHOULD, BooleanClause.Occur.SHOULD};
//AND
Query query = MultiFieldQueryParser.parse(Version.LUCENE_36, allkeyword,
new
String[]{
"title"
,
"describes"
,
"keywords"
}, flags, analyzer);
bQuery.add(query, BooleanClause.Occur.MUST);
//AND
}
if
(!
""
.equals(onekeyword)) {
//包含任意关键词
Analyzer analyzer =
new
IKAnalyzer(
true
);
BooleanClause.Occur[] flags = {BooleanClause.Occur.SHOULD, BooleanClause.Occur.SHOULD, BooleanClause.Occur.SHOULD};
//OR
Query query = MultiFieldQueryParser.parse(Version.LUCENE_36, onekeyword,
new
String[]{
"title"
,
"describes"
,
"keywords"
}, flags, analyzer);
bQuery.add(query, BooleanClause.Occur.MUST);
//AND
}
if
(!
""
.equals(nokeyword)) {
//排除关键词
Analyzer analyzer =
new
IKAnalyzer(
true
);
BooleanClause.Occur[] flags = {BooleanClause.Occur.SHOULD, BooleanClause.Occur.SHOULD, BooleanClause.Occur.SHOULD};
//NOT
Query query = MultiFieldQueryParser.parse(Version.LUCENE_36, nokeyword,
new
String[]{
"title"
,
"describes"
,
"keywords"
}, flags, analyzer);
bQuery.add(query, BooleanClause.Occur.MUST_NOT);
//AND
}
int
hm = start + pageSize;
TopScoreDocCollector res = TopScoreDocCollector.create(hm,
false
);
searcher.search(bQuery, res);
SimpleHTMLFormatter simpleHTMLFormatter =
new
SimpleHTMLFormatter(
"<span style='color:red'>"
,
"</span>"
);
Highlighter highlighter =
new
Highlighter(simpleHTMLFormatter,
new
QueryScorer(bQuery));
this
.rowCount = res.getTotalHits();
this
.pages = (rowCount -
1
) / pageSize +
1
;
//计算总页数
System.out.println(
"rowCount:"
+ rowCount);
TopDocs tds = res.topDocs(start, pageSize);
ScoreDoc[] sd = tds.scoreDocs;
Analyzer analyzer =
new
IKAnalyzer();
for
(
int
i =
0
; i < sd.length; i++) {
Document hitDoc = reader.document(sd[i].doc);
list.add(createObj(hitDoc, analyzer, highlighter));
}
}
catch
(Exception e) {
e.printStackTrace();
}
return
list;
}
/**
* 创建返回对象（高亮）
*/
private
synchronized
static
Object createObj(Document doc, Analyzer analyzer, Highlighter highlighter) {
Gk_infoSub gk =
new
Gk_infoSub();
try
{
if
(doc !=
null
) {
gk.setIndexno(StringUtil.null2String(doc.get(
"indexno"
)));
gk.setPdate(StringUtil.null2String(doc.get(
"pdate"
)));
String title = StringUtil.null2String(doc.get(
"title"
));
gk.setTitle(title);
if
(!
""
.equals(title)) {
highlighter.setTextFragmenter(
new
SimpleFragmenter(title.length()));
TokenStream tk = analyzer.tokenStream(
"title"
,
new
StringReader(title));
String htext = StringUtil.null2String(highlighter.getBestFragment(tk, title));
if
(!
""
.equals(htext)) {
gk.setTitle(htext);
}
}
String keywords = StringUtil.null2String(doc.get(
"keywords"
));
gk.setKeywords(keywords);
if
(!
""
.equals(keywords)) {
highlighter.setTextFragmenter(
new
SimpleFragmenter(keywords.length()));
TokenStream tk = analyzer.tokenStream(
"keywords"
,
new
StringReader(keywords));
String htext = StringUtil.null2String(highlighter.getBestFragment(tk, keywords));
if
(!
""
.equals(htext)) {
gk.setKeywords(htext);
}
}
String describes = StringUtil.null2String(doc.get(
"describes"
));
gk.setDescribes(describes);
if
(!
""
.equals(describes)) {
highlighter.setTextFragmenter(
new
SimpleFragmenter(describes.length()));
TokenStream tk = analyzer.tokenStream(
"keywords"
,
new
StringReader(describes));
String htext = StringUtil.null2String(highlighter.getBestFragment(tk, describes));
if
(!
""
.equals(htext)) {
gk.setDescribes(htext);
}
}
}
return
gk;
}
catch
(Exception e) {
e.printStackTrace();
return
null
;
}
finally
{
gk =
null
;
}
}
private
synchronized
static
Object createObj(Document doc) {
Gk_infoSub gk =
new
Gk_infoSub();
try
{
if
(doc !=
null
) {
gk.setIndexno(StringUtil.null2String(doc.get(
"indexno"
)));
gk.setPdate(StringUtil.null2String(doc.get(
"pdate"
)));
gk.setTitle(StringUtil.null2String(doc.get(
"title"
)));
gk.setKeywords(StringUtil.null2String(doc.get(
"keywords"
)));
gk.setDescribes(StringUtil.null2String(doc.get(
"describes"
)));
}
return
gk;
}
catch
(Exception e) {
e.printStackTrace();
return
null
;
}
finally
{
gk =
null
;
}
}
}
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long
a = System.currentTimeMillis();
try
{
int
curpage = StringUtil.StringToInt(StringUtil.null2String(form.get(
"curpage"
)));
int
pagesize = StringUtil.StringToInt(StringUtil.null2String(form.get(
"pagesize"
)));
String title = StringUtil.replaceLuceneStr(StringUtil.null2String(form.get(
"title"
)));
LuceneQuery lu =
new
LuceneQuery();
form.addResult(
"list"
, lu.queryIndexTitle(title, curpage, pagesize));
form.addResult(
"curPage"
, lu.getCurrentPage());
form.addResult(
"pageSize"
, lu.getPageSize());
form.addResult(
"rowCount"
, lu.getRowCount());
form.addResult(
"pageCount"
, lu.getPages());
}
catch
(Exception e) {
e.printStackTrace();
}
long
b = System.currentTimeMillis();
long
c = b - a;
System.out.println(
"[搜索信息花费时间："
+ c +
"毫秒]"
);
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long
a = System.currentTimeMillis();
try
{
int
curpage = StringUtil.StringToInt(StringUtil.null2String(form.get(
"curpage"
)));
int
pagesize = StringUtil.StringToInt(StringUtil.null2String(form.get(
"pagesize"
)));
String allkeyword = StringUtil.replaceLuceneStr(StringUtil.null2String(form.get(
"allkeyword"
)));
String onekeyword = StringUtil.replaceLuceneStr(StringUtil.null2String(form.get(
"onekeyword"
)));
String nokeyword = StringUtil.replaceLuceneStr(StringUtil.null2String(form.get(
"nokeyword"
)));
LuceneQuery lu =
new
LuceneQuery();
form.addResult(
"list"
, lu.queryIndexFields(allkeyword,onekeyword,nokeyword, curpage, pagesize));
form.addResult(
"curPage"
, lu.getCurrentPage());
form.addResult(
"pageSize"
, lu.getPageSize());
form.addResult(
"rowCount"
, lu.getRowCount());
form.addResult(
"pageCount"
, lu.getPages());
}
catch
(Exception e) {
e.printStackTrace();
}
long
b = System.currentTimeMillis();
long
c = b - a;
System.out.println(
"[高级检索花费时间："
+ c +
"毫秒]"
);
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4、Lucene通配符查询
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BooleanQuery bQuery =
new
BooleanQuery();
//组合查询
if
(!
""
.equals(title)) {
WildcardQuery w1 =
new
WildcardQuery(
new
Term(
"title"
, title+
"*"
));
bQuery.add(w1, BooleanClause.Occur.MUST);
//AND
}
int
hm = start + pageSize;
TopScoreDocCollector res = TopScoreDocCollector.create(hm,
false
);
searcher.search(bQuery, res);
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5、Lucene嵌套查询
实现SQL：(unitid like 'unitid%' and idml like 'id2%') or (tounitid like 'unitid%' and tomlid like 'id2%' and tostate=1)|
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BooleanQuery bQuery =
new
BooleanQuery();
BooleanQuery b1 =
new
BooleanQuery();
WildcardQuery w1 =
new
WildcardQuery(
new
Term(
"unitid"
, unitid +
"*"
));
WildcardQuery w2 =
new
WildcardQuery(
new
Term(
"idml"
, id2 +
"*"
));
b1.add(w1, BooleanClause.Occur.MUST);
//AND
b1.add(w2, BooleanClause.Occur.MUST);
//AND
bQuery.add(b1, BooleanClause.Occur.SHOULD);
//OR
BooleanQuery b2 =
new
BooleanQuery();
WildcardQuery w3 =
new
WildcardQuery(
new
Term(
"tounitid"
, unitid +
"*"
));
WildcardQuery w4 =
new
WildcardQuery(
new
Term(
"tomlid"
, id2 +
"*"
));
WildcardQuery w5 =
new
WildcardQuery(
new
Term(
"tostate"
,
"1"
));
b2.add(w3, BooleanClause.Occur.MUST);
//AND
b2.add(w4, BooleanClause.Occur.MUST);
//AND
b2.add(w5, BooleanClause.Occur.MUST);
//AND
bQuery.add(b2, BooleanClause.Occur.SHOULD);
//OR
|
6、Lucene先根据时间排序后分页
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int
hm = start + pageSize;
Sort sort =
new
Sort(
new
SortField(
"pdate"
, SortField.STRING,
true
));
TopScoreDocCollector res = TopScoreDocCollector.create(pageSize,
false
);
searcher.search(bQuery, res);
this
.rowCount = res.getTotalHits();
this
.pages = (rowCount -
1
) / pageSize +
1
;
//计算总页数
TopDocs tds =searcher.search(bQuery,rowCount,sort);
// res.topDocs(start, pageSize);
ScoreDoc[] sd = tds.scoreDocs;
System.out.println(
"rowCount:"
+ rowCount);
int
i=
0
;
for
(ScoreDoc scoreDoc : sd) {
i++;
if
(i<start){
continue
;
}
if
(i>hm){
break
;
}
Document doc = searcher.doc(scoreDoc.doc);
list.add(createObj(doc));
}
|
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