第一次使用compass做全文搜索

由于是个资讯类的项目，加上把项目的结构进行了重新部署（基于Annotation spring 2.5 MVC + hibernate），所以也计划把compass也加进来，做个简单的全文搜索。可惜是时间比较紧，前台没有把url-rewrite也加入（考虑到前台经常变化，又不想经常reload，所以用jsp直接读取）。第一次使用compass，基本也上网找找资料，以下总结一下：

 

所需包：compass-2.2.0.jar，lucene-core.jar

 

application-compass.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:context="http://www.springframework.org/schema/context"
    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-2.5.xsd
            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
            http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
            
     <bean id="annotationConfiguration" class="org.compass.annotations.config.CompassAnnotationsConfiguration"></bean> 
     <bean id="compass" class="org.compass.spring.LocalCompassBean">
	 <!-- anontaition式设置 -->
		<property name="classMappings">
		<list>			
			<value>com.model.Book</value>			
			<value>com.model.News</value>
		</list>
		</property>
		<property name="compassConfiguration" ref="annotationConfiguration"/>
		<property name="compassSettings">
			<props>
				<prop key="compass.engine.connection">D:/javaWeb/lib-read/compass</prop> 
				<prop key="compass.transaction.factory">org.compass.spring.transaction.SpringSyncTransactionFactory</prop>
			</props>  
		</property>
		<property name="transactionManager" ref="transactionManager"/>
	</bean>

	<bean id="hibernateGpsDevice" class="org.compass.spring.device.hibernate.dep.SpringHibernate3GpsDevice">
		<property name="name">
		<value>hibernateDevice</value>
		</property>
		<property name="sessionFactory" ref="sessionFactory"/>
		<property name="mirrorDataChanges">  
            <value>true</value><!-- 同步更新索引 -->  
        </property>  
	</bean>

	<bean id="compassGps" class="org.compass.gps.impl.SingleCompassGps" init-method="start" destroy-method="stop">
		<property name="compass" ref="compass"/>
		<property name="gpsDevices">
			<bean id="hibernateGpsDevice2" class="org.compass.spring.device.hibernate.dep.SpringHibernate3GpsDevice">  
                    <property name="name" value="hibernateDevice"></property>  
                     <property name="sessionFactory" ref="sessionFactory"></property>  
              </bean>
		</property>
	</bean>
	<bean id="compassTemplate"  class="org.compass.core.CompassTemplate">  
	    <property name="compass" ref="compass" />  
	 </bean>
	 
	<!-- 定时重建索引(利用quartz)或随 Spring ApplicationContext启动而重建索引 -->  
   <bean id="compassIndexBuilder"  
       class="com.compass.CompassIndexBuilder"  
       lazy-init="false">  
       <property name="compassGps" ref="compassGps" />  
       <property name="buildIndex" value="true"/><!--   -->  
       <property name="lazyTime" value="10" />  
   </bean>              
</beans>

 

CompassIndexBuilder.java

public class CompassIndexBuilder implements InitializingBean {  
	  
    private static final Logger log = Logger.getLogger(CompassIndexBuilder.class);  

    // 是否需要建立索引，可被设置为false使本Builder失效.  
    private boolean buildIndex = true;  

    // 索引操作线程延时启动的时间，单位为秒  
    private int lazyTime = 50;  

     // Compass封装  
     private CompassGps compassGps;  

     // 索引线程  
     private Thread indexThread = new Thread() {  


             public void run() {  
                     try {  
                             Thread.sleep(lazyTime * 1000);  

                             log.info("begin compass index...");  
                             long beginTime = System.currentTimeMillis();  
                             // 重建索引.  
                             // 如果compass实体中定义的索引文件已存在，索引过程中会建立临时索引，  
                             // 索引完成后再进行覆盖.  
                             compassGps.index();  
                             long costTime = System.currentTimeMillis() - beginTime;  
                             log.info("compss index finished.");  
                             log.info("costed " + costTime + " milliseconds");  
                     } catch (InterruptedException e) {  
                             // simply proceed  
                     }  
             }  
     };  

     /** 
      * 实现<code>InitializingBean</code>接口，在完成注入后调用启动索引线程. 
      * 
      * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet() 
      */  
     public void afterPropertiesSet() throws Exception {  
             if (buildIndex) {  
                     Assert.notNull(compassGps, "CompassIndexBuilder not set CompassGps yet.");  
                     indexThread.setDaemon(true);  
                     indexThread.setName("Compass Indexer");  
                     indexThread.start();  
             }  
     }  

     public void setBuildIndex(boolean buildIndex) {  
             this.buildIndex = buildIndex;  
     }  

     public void setLazyTime(int lazyTime) {  
             this.lazyTime = lazyTime;  
     }  

     public void setCompassGps(CompassGps compassGps) {  
             this.compassGps = compassGps;  
     }  
}  

 

 

CompassSearchController.java

@Controller
public class CompassSearchController {
	
	@Autowired
	private Compass compass ;
	
	@RequestMapping("/search.do")
	public ModelAndView list(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException
	{
		ModelAndView mav = new ModelAndView("search");
		int offsetStart = 0;
		int maxPageItems = 10;
		int maxIndexPages = 10;		
		
		String szOffsetStart = request.getParameter("pager.offset");
		if (szOffsetStart != null)
			offsetStart = Integer.valueOf(szOffsetStart).intValue();
		
		String keywords = "";	
		if (request.getParameter("keywords") != null)
		{
			keywords = request.getParameter("keywords");			
		}
		String keyStr = "";
		try
		{
			keywords = URLDecoder.decode(keywords, "UTF-8");
			keyStr = URLEncoder.encode(keywords, "UTF-8");
		}
		catch (UnsupportedEncodingException e)
		{
			e.printStackTrace();
		}		
	       //打开session会话

	       CompassSession session = compass.openSession();

	       //开启session事务

	       CompassTransaction tx = session.beginLocalTransaction();

	       //用session建立一个查询

	       CompassQueryBuilder queryBuilder = session.queryBuilder();

	       //得到查询结果

	       CompassQuery a = queryBuilder.queryString(keywords).toQuery();
	       CompassQuery b = queryBuilder.ge("isShow", "1");
	       CompassBooleanQueryBuilder CQB = queryBuilder.bool().addMust(a).addMust(b);

	       //按照postTime属性进行排列，默认是升序

	       //query.addSort(“postTime”,SortDirection.REVERSE);//是降序

	       //query.addSort("postTime");

	       //获得结果集

	       CompassHits hits = query.hits();
	       
	       int itemCount = hits.length();
	      

	       //为了防止角标越界，所以在结果集和要取得的内容之间取最小值

	       int end = Math.min(hits.length(),  offsetStart + maxPageItems);
	       
	       
	       List list = new ArrayList();
	       for (int i = offsetStart; i < end; i++){

	           //取得每一个结果

	          list.add(hits.data(i));

	          

	           //高亮  返回的是高亮后的字符串

	           /*String ht = hits.highlighter(i).fragment("content");

	           if(ht!=null){

	              aritcle.setContent(ht);

	           }

	          

	           list.add(aritcle);*/

	       }

	       tx.commit();

	       session.close();
	       
	       int currPage = ((offsetStart-1) + maxPageItems) / maxPageItems;
	       if((offsetStart-1) % maxPageItems != 0)
	           currPage++;

	       int totalPage = itemCount/maxPageItems;
	       if(itemCount % maxPageItems != 0)
	           totalPage++;
	       
	       mav.addObject("itemCount", itemCount);
	       mav.addObject("maxPageItems", maxPageItems);
	       mav.addObject("maxIndexPages", maxIndexPages);
	       mav.addObject("offsetStart", offsetStart);
	       mav.addObject("currPage", currPage);
	       mav.addObject("totalPage", totalPage);
	       mav.addObject("keywords", keywords);
	       mav.addObject("keyStr", keyStr);
	       mav.addObject("dataList", list);
	       return mav;
	    }  

 

search.jsp

 

<%@page contentType="text/html; charset=utf-8"%>
<%@include file="header.jsp"%>
<%@ include file="../common/taglibs.jsp"%>
<%@include file="menu.jsp"%>
	<div class="breadcrumbs">您的位置：<a href="./">首页</a> &gt; <span>搜索结果</span></div>
	<div class="content">
			<div class="pagebox_1">
				<h4 class="boxtitle"><strong>“${keywords}”的搜索结果${keystr},总共${itemCount}条记录</strong></h4>
				<div class="boxtext">
                    <c:if test="${not empty dataList}">
                      <ul class="newslist_1">
                      <c:forEach var="data" items="${dataList}">
                      <c:set var="content" value="${data.content}" />
                      <%
                        String content = (String)pageContext.getAttribute("content");
                      %>
                        
                          <li>
                            <c:choose>
                              <c:when test="${fn:contains(data.class, 'Book')}">
                              <h5><a href="bookshow.jsp?id=${data.id}" class="sort">[ 图书 ]</a><a href="bookshow.jsp?id=${data.id}" target="_blank">${data.title}</a></h5>
                              </c:when>

                              <c:when test="${fn:contains(data.class, 'News')}">
                              <c:set var="url" value="${data.url}" />
                              <c:if test="${empty data.url}">
                                <c:set var="url" value="newsshow.jsp?id=${data.id}" />
                              </c:if>
                              <h5><a href="newsshow.jsp?id=${data.id}" class="sort">[ 资讯与动态 ]</a><a href="${url}" target="_blank">${data.title}</a></h5>
                              </c:when>                   

                            </c:choose>
                              <div class="text"><%=StringExtract.extractText2(StringUtils.abbreviate(content,150))%></div>
                          </li>
                      </c:forEach>    
                      </ul>
                      <!--<c:if test="${totalPage > 1}">
                      <div class="turnpage">
                      <c:forEach begin="0" end="${totalPage - 1}" step="1" varStatus="status">
                          <a href="search.do?keywords=${keywords}&pager.offset=${status.index * maxPageItems}" <c:if test="${status.index == (currPage-1)}">class="cur"</c:if>>${status.index + 1}</a> 
                       </c:forEach>
                      </div>
                      </c:if>-->
                      <div class="turnpage"> <pg:pager items="${itemCount}" maxPageItems="${maxPageItems}" maxIndexPages="${maxIndexPages}" export="offset,currentPageNumber=pageNumber" scope="request" url="search.do"><pg:index><jsp:include page="pager/searchPagerControl.jsp" flush="true"/></pg:index></pg:pager></div>
                    </c:if>
                    <c:if test="${empty dataList}">
                      暂时没有您要查找的信息!
                    </c:if>										
				</div>
			</div><!-- pagebox_1 -->
	</div>


<%@include file="footer.jsp"%>

 

searchPageControl.jsp

<%@page contentType="text/html;charset=utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<%@ page session="false" %>
<%@ taglib uri="http://jsptags.com/tags/navigation/pager" prefix="pg" %>
<pg:param name="keywords" value="${keyStr}" />
<jsp:useBean id="currentPageNumber" type="java.lang.Integer" scope="request"/>
<pg:prev export="pageUrl" ifnull="<%= true %>">
	<c:if test="${not empty pageUrl }"><a href="${pageUrl }">上一页</a></c:if>
</pg:prev>
<pg:pages>
	<c:if test="${pageNumber == currentPageNumber }"><a href="#" class="cur">${pageNumber }</a></c:if>
	<c:if test="${pageNumber != currentPageNumber }"><a href="${pageUrl }">${pageNumber }</a></c:if>
</pg:pages>
<pg:next export="pageUrl" ifnull="<%= true %>">
  <c:if test="${not empty pageUrl }"> <a href="${pageUrl }">下一页</a></c:if>
</pg:next>