使用compass+lucene实现简单的全文检索功能

这个例子使用Struts2+Spring2+Hibernate3组合来配合Compass2+Lucene2实现全文检索功能。

首先看一下工程使用到的jar包

以下是工程的文件结构：

这个工程是在MyEclipse6下开发的。数据库使用MySQL5。

新建数据库，库名：compass。

/*
MySQL Data Transfer
Source Host: localhost
Source Database: compass
Target Host: localhost
Target Database: compass
Date: 2008-6-8 10:27:30
*/

SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for books
-- ----------------------------
CREATE TABLE `books` (
  `ID` int(11) NOT NULL AUTO_INCREMENT,
  `NM` varchar(100) DEFAULT NULL,
  `CNT` text,
  `ISBN` char(10) DEFAULT NULL,
  `PBLDT` date DEFAULT NULL,
  PRIMARY KEY (`ID`)
) ENGINE=InnoDB AUTO_INCREMENT=14 DEFAULT CHARSET=gbk;

-- ----------------------------
-- Records 
-- ----------------------------
INSERT INTO `books` VALUES ('1', 'Lucene IN Action 中文版', '这是一本关于Java的查询引擎的书。', '7121032171', '2007-01-01');
INSERT INTO `books` VALUES ('2', 'Spring 2.0 技术手册', '林信良写的一本关于Spring的书。', '7121039580', '2007-04-01');
INSERT INTO `books` VALUES ('4', '林信良学Lunece', '林信良学习Lunece的一本书', '1234567890', '2008-06-01');
INSERT INTO `books` VALUES ('9', 'Hibernate 深入浅出', '这是一本关于Hibernate的好书。', '7121006707', '2005-06-01');
INSERT INTO `books` VALUES ('10', 'Hibernate IN Action 中文版', '这是一本关于Hibernate的中文书', '1212121212', '2008-07-10');
INSERT INTO `books` VALUES ('11', 'Hibernate + Spring 中文系统', 'Hibernate + Spring 中文系统', '1234512345', '2008-06-06');
INSERT INTO `books` VALUES ('12', 'Hibernate 深入浅出2', 'Hibernate 深入浅出2', '2343454567', '2008-05-01');
INSERT INTO `books` VALUES ('13', 'Hibernate IN Action 中文版2', 'Hibernate IN Action 中文版2', '8888006707', '2009-06-01');

配置文件：

1.web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
 http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

 <display-name>compass</display-name>

 <context-param>
  <param-name>log4jConfigLocation</param-name>
  <param-value>/WEB-INF/log4j.properties</param-value>
 </context-param>

 <context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>
   /WEB-INF/applicationContext.xml,
   /WEB-INF/serviceContext.xml, 
   /WEB-INF/dataAccessContext.xml,
   /WEB-INF/compassContext.xml
  </param-value>
 </context-param>

 <filter>
  <filter-name>compass</filter-name>
  <filter-class>
   org.apache.struts2.dispatcher.FilterDispatcher
  </filter-class>
 </filter>

 <filter-mapping>
  <filter-name>compass</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>

 <filter>
  <filter-name>encodingFilter</filter-name>
  <filter-class>
   org.springframework.web.filter.CharacterEncodingFilter
  </filter-class>
  <init-param>
   <param-name>encoding</param-name>
   <param-value>utf-8</param-value>
  </init-param>
 </filter>

 <filter-mapping>
  <filter-name>encodingFilter</filter-name>
  <url-pattern>/*</url-pattern>
 </filter-mapping>

 <listener>
  <listener-class>
   org.springframework.web.context.ContextLoaderListener
  </listener-class>
 </listener>

 <listener>
  <listener-class>
   org.springframework.web.util.Log4jConfigListener
  </listener-class>
 </listener>

 <welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>

</web-app>

=========================================================================

2.log4j.properties

#Log4j
log4j.rootLogger=error, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p %c - %m%n

log4j.logger.org.compass=error

=========================================================================

3.jdbc.properties

#DataSource
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/compass?characterEncoding=gbk
jdbc.username=root
jdbc.password=root
jdbc.initialPoolSize=10
jdbc.minPoolSize=5
jdbc.maxPoolSize=30
jdbc.acquireIncrement=5
jdbc.maxIdleTime=10
jdbc.maxStatements=0

#Hibernate
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.show_sql=true
hibernate.jdbc.batch_size=20
hibernate.generate_statistics=true

=========================================================================

4.paoding-dic-home.properties

paoding.dic.home=C:/paoding/dic
paoding.dic.detector.interval=60

=========================================================================

5.struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>
    <constant name="struts.enable.DynamicMethodInvocation" value="false" />
    <constant name="struts.devMode" value="false" />

    <package name="soutyuu" extends="struts-default">
    
        <action name="*book" class="com.cecltd.web.BookAction" method="{1}">
   <result name="insert">jsp/insert.jsp</result>
   <result name="search">jsp/search.jsp</result>
  </action>
        
    </package>
</struts>

=========================================================================

6.compass.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<compass-core-config
 xmlns="http://www.compass-project.org/schema/core-config"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://www.compass-project.org/schema/core-config
           http://www.compass-project.org/schema/compass-core-config-2.0.xsd">

 <compass name="default">
  <connection>
   <file path="C:/target" />
  </connection>

  <searchEngine>
   <analyzer name="MyAnalyzer" type="CustomAnalyzer"
    analyzerClass="net.paoding.analysis.analyzer.PaodingAnalyzer">
   </analyzer>
  </searchEngine>
 </compass>

</compass-core-config>

=========================================================================

7.applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

 <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
  <property name="location">
   <value>/WEB-INF/jdbc.properties</value>
  </property>
 </bean>

 <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
  <property name="driverClass">
   <value>${jdbc.driverClassName}</value>
  </property>
  <property name="jdbcUrl">
   <value>${jdbc.url}</value>
  </property>
  <property name="user">
   <value>${jdbc.username}</value>
  </property>
  <property name="password">
   <value>${jdbc.password}</value>
  </property>
  <property name="initialPoolSize">
   <value>${jdbc.initialPoolSize}</value>
  </property>
  <property name="minPoolSize">
   <value>${jdbc.minPoolSize}</value>
  </property>
  <property name="maxPoolSize">
   <value>${jdbc.maxPoolSize}</value>
  </property>
  <property name="acquireIncrement">
   <value>${jdbc.acquireIncrement}</value>
  </property>
  <property name="maxIdleTime">
   <value>${jdbc.maxIdleTime}</value>
  </property>
  <property name="maxStatements">
   <value>${jdbc.maxStatements}</value>
  </property>
 </bean>
 
 <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
  <property name="dataSource">
   <ref bean="dataSource" />
  </property>
  <property name="mappingResources">
   <list>
    <value>com/cecltd/domain/Book.hbm.xml</value>
   </list>
  </property>
  <property name="hibernateProperties">
   <props>
    <prop key="hibernate.dialect">
     ${hibernate.dialect}
    </prop>
    <prop key="hibernate.show_sql">
     ${hibernate.show_sql}
    </prop>
    <prop key="hibernate.jdbc.batch_size">
     ${hibernate.jdbc.batch_size}
    </prop>
    <prop key="hibernate.generate_statistics">
     ${hibernate.generate_statistics}
    </prop>
   </props>
  </property>
  <property name="eventListeners">
   <map>
    <entry key="merge">
     <bean
      class="org.springframework.orm.hibernate3.support.IdTransferringMergeEventListener" />
    </entry>
   </map>
  </property>
 </bean>

 <bean id="compass" class="org.compass.spring.LocalCompassBean">
  <property name="resourceLocations">
   <list>
    <value>classpath:com/cecltd/domain/Book.cmd.xml</value>
    <value>classpath:com/cecltd/domain/Book.cpm.xml</value>
   </list>
  </property>
  <property name="configLocation">
   <value>/WEB-INF/compass.cfg.xml</value>
  </property>
  <property name="transactionManager">
   <ref local="transactionManager" />
  </property>
 </bean>

 <bean id="hibernateGpsDevice" class="org.compass.spring.device.hibernate.dep.SpringHibernate3GpsDevice">
  <property name="name">
   <value>hibernateDevice</value>
  </property>
  <property name="sessionFactory">
   <ref local="sessionFactory" />
  </property>
 </bean>

 <bean id="compassGps" class="org.compass.gps.impl.SingleCompassGps" init-method="start" destroy-method="stop">
  <property name="compass">
   <ref bean="compass" />
  </property>
  <property name="gpsDevices">
   <list>
    <bean
     class="org.compass.spring.device.SpringSyncTransactionGpsDeviceWrapper">
     <property name="gpsDevice" ref="hibernateGpsDevice" />
    </bean>
   </list>
  </property>
 </bean>

 <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
  <property name="sessionFactory">
   <ref local="sessionFactory" />
  </property>
 </bean>
</beans>

=========================================================================

8.serviceContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

 <bean id="bookService" class="com.cecltd.service.impl.BookServiceImpl">
  <property name="bookDao">
   <ref bean="bookDao" />
  </property>
  <property name="bookCps">
   <ref bean="bookCps" />
  </property>
 </bean>

</beans>

=========================================================================

9.dataAccessContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

 <bean id="bookDao" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
  <property name="transactionManager">
   <ref bean="transactionManager" />
  </property>
  <property name="target">
   <ref local="bookDaoTarget" />
  </property>
  <property name="transactionAttributes">
   <props>
    <prop key="search*">PROPAGATION_REQUIRED,readOnly</prop>
    <prop key="insert*">PROPAGATION_REQUIRED</prop>
   </props>
  </property>
 </bean>

 <bean id="bookDaoTarget" class="com.cecltd.dao.jdbc.BookDaoImpl">
  <property name="sessionFactory">
   <ref bean="sessionFactory" />
  </property>
 </bean>

</beans>

=========================================================================

10.compassContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

 <bean id="bookCps" class="com.cecltd.compass.impl.BookCpsImpl">
  <property name="compass">
   <ref bean="compass" />
  </property>
 </bean>

</beans>

=========================================================================

11.Book.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

 <class name="com.cecltd.domain.Book" table="Books">
  <id name="id" column="ID">
   <generator class="native" />
  </id>
  <property name="name" column="NM" />
  <property name="content" column="CNT" />
  <property name="isbn" column="ISBN" />
  <property name="pbl_dt" type="timestamp" column="PBLDT" />
 </class>

</hibernate-mapping>

=========================================================================

12.Book.cpm.xml

<?xml version="1.0"?>
<!DOCTYPE compass-core-mapping PUBLIC 
    "-//Compass/Compass Core Mapping DTD 2.0//EN"
    "http://www.compass-project.org/dtd/compass-core-mapping-2.0.dtd">

<compass-core-mapping package="com.cecltd.domain">

 <class name="Book" alias="${book.book}">
  <id name="id" />
  <constant>
   <meta-data>type</meta-data>
   <meta-data-value>java</meta-data-value>
  </constant>
  <property name="name">
   <meta-data>${book.name}</meta-data>
  </property>
  <property name="content">
   <meta-data>${book.content}</meta-data>
  </property>
  <property name="isbn">
   <meta-data>${book.isbn}</meta-data>
  </property>
  <property name="pbl_dt">
   <meta-data>${book.pbl_dt}</meta-data>
  </property>
 </class>

</compass-core-mapping>

=========================================================================

13.Book.cmd.xml

<?xml version="1.0"?>
<!DOCTYPE compass-core-meta-data PUBLIC 
    "-//Compass/Compass Core Meta Data DTD 2.0//EN"
    "http://www.compass-project.org/dtd/compass-core-meta-data-2.0.dtd">

<compass-core-meta-data>

 <meta-data-group id="book" displayName="Book Meta Data">

  <description>Book Meta Data</description>
  <uri>http://compass/book</uri>

  <alias id="book" displayName="Book">
   <uri>http://compass/book/alias/book</uri>
   <name>book</name>
  </alias>

  <meta-data id="name" displayName="Name">
   <uri>http://compass/book/name</uri>
   <name>name</name>
  </meta-data>

  <meta-data id="content" displayName="Content">
   <uri>http://compass/book/content</uri>
   <name>content</name>
  </meta-data>

  <meta-data id="isbn" displayName="Isbn">
   <uri>http://compass/book/isbn</uri>
   <name>isbn</name>
  </meta-data>

  <meta-data id="pbl_dt" displayName="Pbl_dt">
   <uri>http://compass/book/pbl_dt</uri>
   <name format="yyyy-MM-dd">pbl_dt</name>
  </meta-data>

 </meta-data-group>

</compass-core-meta-data>

=========================================================================

JSP文件：

1.index.jsp

<%@ page contentType="text/html; charset=UTF-8"%>
<html>
 <head>
  <title>页面加载中，请稍后......</title>
  <meta http-equiv="refresh" content="1;URL=/compass/initbook.action">
 </head>
</html>

2.insert.jsp

<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
 <s:head theme="ajax" />
 <body>
  <s:form action="insertbook.action" method="post">
   <s:textfield key="name" label="书名" size="95" />
   <s:textarea key="content" label="摘要" rows="10" cols="73" />
   <s:textfield key="isbn" label="ISBN" size="13" maxlength="10" />
   <s:datetimepicker name="pbl_dt" label="出版日"
    displayFormat="yyyy-MM-dd" />
   <s:submit value=" 注册 " />
  </s:form>
 </body>
</html>

3.search.jsp

<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
 <head>
  <title>结果显示</title>
 </head>
 <body>
  <s:form action="searchbook.action" method="post">
   <s:textfield key="query" label="关键字" size="118" />
   <s:submit value=" 搜索 " onclick="this.form.action='searchbook.action'" />
   <s:submit value=" 返回 " onclick="this.form.action='gobackbook.action'" />
   <table id="dtTable" width="800" border="1" cellpadding="0"
    cellspacing="0" style="BORDER-COLLAPSE: collapse"
    borderColor=#000000>
    <thead>
     <tr bgcolor="orange" height="30px">
      <th width="25%">
       书名
      </th>
      <th width="45%">
       概要
      </th>
      <th width="15%">
       ISBN
      </th>
      <th width="15%">
       出版日
      </th>
     </tr>
    </thead>
    <tbody>
     <s:iterator value="datalist" status="rs">
      <tr align="center" height="26px">
       <td>
        <s:property value="name" />
       </td>
       <td>
        <s:property value="content" />
       </td>
       <td>
        <s:property value="isbn" />
       </td>
       <td>
        <s:property value="pbl_dt" />
       </td>
      </tr>
     </s:iterator>
    </tbody>
   </table>
  </s:form>
 </body>
</html>

=========================================================================

Java文件

1.Book.java
package com.cecltd.domain;

import java.io.Serializable;
import java.util.Date;

public class Book implements Serializable {

	private static final long serialVersionUID = -5275017032598185911L;

	private Integer id;
	private String name;
	private String content;
	private String isbn;
	private Date pbl_dt;
	
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getContent() {
		return content;
	}
	public void setContent(String content) {
		this.content = content;
	}
	public String getIsbn() {
		return isbn;
	}
	public void setIsbn(String isbn) {
		this.isbn = isbn;
	}
	public Date getPbl_dt() {
		return pbl_dt;
	}
	public void setPbl_dt(Date pbl_dt) {
		this.pbl_dt = pbl_dt;
	}
}
2.BookAction.java
package com.cecltd.web;

import java.text.SimpleDateFormat;
import java.util.List;

import com.cecltd.domain.Book;
import com.cecltd.service.BookService;
import com.opensymphony.xwork2.ActionSupport;

public class BookAction extends ActionSupport {

	private static final long serialVersionUID = -3245236770369400667L;

	public static final String INSERT = "insert";
	public static final String SEARCH = "search";
	
	private BookService bookService;
	public BookAction(BookService bookService) {
		this.bookService = bookService;
	}
	
	public String insert() throws Exception {
	
		Book book = new Book();
		book.setName(getName());
		book.setContent(getContent());
		book.setIsbn(getIsbn());
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
		book.setPbl_dt(format.parse(getPbl_dt()));
		
		bookService.insertBook(book);
		
		return SEARCH;
	}
	
	public String search() throws Exception {
		
		List list = bookService.searchBook(getQuery());
		setDatalist(list);
		
		return SEARCH;
	}
	
	public String init() throws Exception {
		return INSERT;
	}
	
	public String goback() throws Exception {
		return INSERT;
	}

	private String name;
	private String content;
	private String isbn;
	private String pbl_dt;
	
	private String query;
	private List datalist;
	
	public String getQuery() {
		return query;
	}

	public void setQuery(String query) {
		this.query = query;
	}

	public List getDatalist() {
		return datalist;
	}

	public void setDatalist(List datalist) {
		this.datalist = datalist;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}

	public String getIsbn() {
		return isbn;
	}

	public void setIsbn(String isbn) {
		this.isbn = isbn;
	}

	public String getPbl_dt() {
		return pbl_dt;
	}

	public void setPbl_dt(String pbl_dt) {
		this.pbl_dt = pbl_dt;
	}
}

3.BookService.java
package com.cecltd.service;

import java.util.List;

import com.cecltd.domain.Book;

public interface BookService {

	public List searchBook(String query);
	
	public void insertBook(Book book);
}

4.BookServiceImpl.java
package com.cecltd.service.impl;

import java.util.List;

import com.cecltd.compass.BookCps;
import com.cecltd.dao.BookDao;
import com.cecltd.domain.Book;
import com.cecltd.service.BookService;

public class BookServiceImpl implements BookService {

	private BookDao bookDao;
	private BookCps bookCps;
	
	public void setBookDao(BookDao bookDao) {
		this.bookDao = bookDao;
	}

	public void setBookCps(BookCps bookCps) {
		this.bookCps = bookCps;
	}

	public void insertBook(Book book) {
		bookDao.insertBook(book);
	}

	public List searchBook(String query) {
		return bookCps.searchBook(query);
	}
}

5.BookDao.java
package com.cecltd.dao;

import com.cecltd.domain.Book;

public interface BookDao {
	
	public void insertBook(Book book);
}

6.BookDaoImpl.java
package com.cecltd.dao.jdbc;

import org.springframework.orm.hibernate3.HibernateTemplate;

import com.cecltd.dao.BookDao;
import com.cecltd.domain.Book;

public class BookDaoImpl extends HibernateTemplate implements BookDao {

	public void insertBook(Book book) {
		
		save(book);
	}
}

7.BookCps.java
package com.cecltd.compass;

import java.util.List;

public interface BookCps {

	public List searchBook(String query);
}

8.BookCpsImpl.java
package com.cecltd.compass.impl;

import java.util.ArrayList;
import java.util.List;

import org.compass.core.CompassHits;
import org.compass.core.CompassQuery;
import org.compass.core.CompassTemplate;
import org.compass.core.CompassTransaction;

import com.cecltd.compass.BookCps;
import com.cecltd.domain.Book;

public class BookCpsImpl extends CompassTemplate implements BookCps {

	public List searchBook(String query) {

		CompassTransaction tx = getCompass().openSession().beginTransaction();
		//CompassHits hits = find("name:"+ query);
		CompassHits hits = getCompass().openSession().queryBuilder().queryString("content:"+ query).toQuery().
				addSort("isbn", CompassQuery.SortPropertyType.STRING, CompassQuery.SortDirection.REVERSE).hits();
		
		List
    list = new ArrayList
   ();
		int len = hits.getLength();
		for (int i = 0; i < len; i++) {
			list.add((Book)hits.data(i));
		}
		tx.commit();
		
		return list;
	}
}
注意，因为该系统中使用到了庖丁解牛中文分词方法，需要自行下载安装并放置在配置文件中所指明的地方。

庖丁解牛：http://groups.google.com/group/paoding/browse_thread/thread/9771c8d495786fee

另外还有IKAnalyzer：http://groups-beta.google.com/group/SegWord/web/segword