ucene3.0 分页显示与高亮显示 实现的 分页 与 高亮显示

lucene3.0  分页显示与高亮显示 实现的 分页 与 高亮显示

 出处:http://bjqincy.iteye.com/blog/784817

分页类

 

Java代码  收藏代码
  1. package com.cee.com;  
  2.   
  3. import java.util.List;  
  4.   
  5. //分页类  
  6. public class PageBean {  
  7.   
  8.     private List list; // 要返回的某一页的记录列表  
  9.     private int allRow; // 总记录数  
  10.     private int totalPage; // 总页数  
  11.     private int currentPage; // 当前页  
  12.     private int pageSize; // 每页记录数  
  13.     private int offset;  
  14.   
  15.     public int getOffset() {  
  16.         return offset;  
  17.     }  
  18.   
  19.     public void setOffset(int offset) {  
  20.         this.offset = offset;  
  21.     }  
  22.   
  23.     private boolean isFirstPage; // 是否为第一页  
  24.     private boolean isLastPage; // 是否为最后一页  
  25.     private boolean hasPreviousPage; // 是否有前一页  
  26.     private boolean hasNextPage; // 是否有下一页  
  27.   
  28.     public List getList() {  
  29.         return list;  
  30.     }  
  31.   
  32.     public void setList(List list) {  
  33.         this.list = list;  
  34.     }  
  35.   
  36.     public int getAllRow() {  
  37.         return allRow;  
  38.     }  
  39.   
  40.     public void setAllRow(int allRow) {  
  41.         this.allRow = allRow;  
  42.     }  
  43.   
  44.     public int getTotalPage() {  
  45.         int totalPage = allRow % pageSize == 0 ? allRow / pageSize : allRow  
  46.                 / pageSize + 1;  
  47.         return totalPage;  
  48.     }  
  49.   
  50.     public void setTotalPage(int totalPage) {  
  51.         this.totalPage = totalPage;  
  52.     }  
  53.   
  54.     public int getCurrentPage() {  
  55.         return currentPage;  
  56.     }  
  57.   
  58.     public void setCurrentPage(int currentPage) {  
  59.         this.currentPage = currentPage;  
  60.     }  
  61.   
  62.     public int getPageSize() {  
  63.         return pageSize;  
  64.     }  
  65.   
  66.     public void setPageSize(int pageSize) {  
  67.         this.pageSize = pageSize;  
  68.     }  
  69.   
  70.     /** */  
  71.     /** 
  72.      * 初始化分页信息 
  73.      */  
  74.     public void init() {  
  75.         this.isFirstPage = isFirstPage();  
  76.         this.isLastPage = isLastPage();  
  77.         this.hasPreviousPage = isHasPreviousPage();  
  78.         this.hasNextPage = isHasNextPage();  
  79.     }  
  80.   
  81.     /** */  
  82.     /** 
  83.      * 以下判断页的信息,只需getter方法(is方法)即可 
  84.      *  
  85.      * @return 
  86.      */  
  87.   
  88.     public boolean isFirstPage() {  
  89.         return currentPage == 1; // 如是当前页是第1页  
  90.     }  
  91.   
  92.     public boolean isLastPage() {  
  93.         return currentPage == totalPage; // 如果当前页是最后一页  
  94.     }  
  95.   
  96.     public boolean isHasPreviousPage() {  
  97.         return currentPage != 1; // 只要当前页不是第1页  
  98.     }  
  99.   
  100.     public boolean isHasNextPage() {  
  101.   if(totalPage==0){  
  102.    return false;  
  103.   }else{  
  104.    return currentPage != totalPage; // 只要当前页不是最后1页  
  105.   }  
  106.     
  107.  } /** */  
  108.     /** 
  109.      * 计算总页数,静态方法,供外部直接通过类名调用 
  110.      *  
  111.      * @param pageSize 
  112.      *            每页记录数 
  113.      * @param allRow 
  114.      *            总记录数 
  115.      * @return 总页数 
  116.      */  
  117.     public static int countTotalPage(final int pageSize, final int allRow) {  
  118.         int totalPage = allRow % pageSize == 0 ? allRow / pageSize : allRow  
  119.                 / pageSize + 1;  
  120.         return totalPage;  
  121.     }  
  122.   
  123.     /** */  
  124.     /** 
  125.      * 计算当前页开始记录 
  126.      *  
  127.      * @param pageSize 
  128.      *            每页记录数 
  129.      * @param currentPage 
  130.      *            当前第几页 
  131.      * @return 当前页开始记录号 
  132.      */  
  133.     public static int countOffset(final int pageSize, final int currentPage) {  
  134.         final int offset = pageSize * (currentPage - 1);  
  135.         return offset;  
  136.     }  
  137.   
  138.     /** */  
  139.     /** 
  140.      * 计算当前页,若为0或者请求的URL中没有"?page=",则用1代替 
  141.      *  
  142.      * @param page 
  143.      *            传入的参数(可能为空,即0,则返回1) 
  144.      * @return 当前页 
  145.      */  
  146.     public static int countCurrentPage(int page) {  
  147.         final int curPage = (page == 0 ? 1 : page);  
  148.         return curPage;  
  149.     }  
  150.   
  151.     public static int lastSqlIdx(int rowStartIdx, int pageSize) {  
  152.         return rowStartIdx + pageSize;  
  153.     }  
  154. }  

  分页代码与高亮代码

  注意 indexDir 目录下存放的是 lucene 的索引， 直接运行代码会发生错误，请看上篇文章生成索引

  

Java代码  收藏代码
  1. package com.cee.test;  
  2.   
  3. import java.io.File;  
  4. import java.io.IOException;  
  5. import java.io.StringReader;  
  6. import java.util.ArrayList;  
  7. import java.util.Date;  
  8. import java.util.List;  
  9.   
  10. import org.apache.lucene.analysis.Analyzer;  
  11. import org.apache.lucene.analysis.TokenStream;  
  12. import org.apache.lucene.analysis.standard.StandardAnalyzer;  
  13. import org.apache.lucene.document.Document;  
  14. import org.apache.lucene.index.CorruptIndexException;  
  15. import org.apache.lucene.queryParser.MultiFieldQueryParser;  
  16. import org.apache.lucene.queryParser.ParseException;  
  17. import org.apache.lucene.search.IndexSearcher;  
  18. import org.apache.lucene.search.Query;  
  19. import org.apache.lucene.search.ScoreDoc;  
  20. import org.apache.lucene.search.Searcher;  
  21. import org.apache.lucene.search.TopScoreDocCollector;  
  22. import org.apache.lucene.search.highlight.Highlighter;  
  23. import org.apache.lucene.search.highlight.InvalidTokenOffsetsException;  
  24. import org.apache.lucene.search.highlight.QueryScorer;  
  25. import org.apache.lucene.search.highlight.SimpleHTMLFormatter;  
  26. import org.apache.lucene.store.FSDirectory;  
  27. import org.apache.lucene.util.Version;  
  28.   
  29. import com.cee.com.PageBean;  
  30.   
  31. /** 
  32.  * 分页与高亮显示 
  33.  *  
  34.  * @author qcy 
  35.  *  
  36.  */  
  37. public class PageSearcher {  
  38.   
  39.     /** 
  40.      *  
  41.      * @param pageNo 
  42.      * @param pageSize 
  43.      * @param q 
  44.      *            表示查询条件 
  45.      * @return 
  46.      */  
  47.     public final static String indexDir = "d:\\TestLucene\\indexDB";  
  48.   
  49.     @SuppressWarnings({ "unchecked", "unchecked", "deprecation", "deprecation" })  
  50.     public static PageBean getPageQuery(int pageNo, int pageSize, String[] q)  
  51.             throws CorruptIndexException, IOException, ParseException, InvalidTokenOffsetsException {  
  52.         List result = new ArrayList();  
  53.         Searcher searcher = new IndexSearcher(FSDirectory.open(new File(  
  54.                 indexDir)), true);  
  55.         Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_CURRENT);  
  56.         String[] fields = { "cbs", "zz" };  
  57.         Query query = MultiFieldQueryParser.parse(Version.LUCENE_CURRENT, q,  
  58.                 fields, analyzer);  
  59.   
  60.         TopScoreDocCollector topCollector = TopScoreDocCollector.create(  
  61.                 searcher.maxDoc(), false);  
  62.         searcher.search(query, topCollector);  
  63.         // 高亮设置  
  64.         SimpleHTMLFormatter simpleHtmlFormatter = new SimpleHTMLFormatter(  
  65.                 "<B>", "</B>");//  
  66.         Highlighter highlighter = new Highlighter(simpleHtmlFormatter,  
  67.                 new QueryScorer(query));  
  68.   
  69.         // 查询当页的记录  
  70.         ScoreDoc[] docs = topCollector.topDocs((pageNo - 1) * pageSize,  
  71.                 pageSize).scoreDocs;  
  72.         for (ScoreDoc scdoc : docs) {  
  73.             Document document = searcher.doc(scdoc.doc);  
  74.             TokenStream tokenStream = analyzer.tokenStream("text",  
  75.                     new StringReader(document.get("cbs")));  
  76.             String str = highlighter.getBestFragment(tokenStream, document.get("cbs"));    
  77.             result.add("id=" + document.get("id") + "|cbs="  
  78.                     + document.get("cbs") + "|zz=" + document.get("zz")+"|red"+str);  
  79.   
  80.         }  
  81.         PageBean pb = new PageBean();  
  82.         pb.setCurrentPage(pageNo);// 当前页  
  83.         pb.setPageSize(pageSize);  
  84.         pb.setAllRow(topCollector.getTotalHits());// hit中的记录数目  
  85.         pb.setList(result);  
  86.         return pb;  
  87.   
  88.     }  
  89.   
  90.     public static void main(String[] args) throws CorruptIndexException,  
  91.             IOException, ParseException, InvalidTokenOffsetsException {  
  92.         String[] q = { "中国", "外国" };  
  93.         long start = new Date().getTime();  
  94.         PageBean pb = getPageQuery(1, 4, q);  
  95.         System.out.println("页面内容-------开始---");  
  96.         List pgResult = pb.getList();  
  97.         for (int i = 0; i < pgResult.size(); i++) {  
  98.             System.out.println(pgResult.get(i).toString());  
  99.         }  
  100.         System.out.println("页面内容-------结束---");  
  101.         System.out.println("当前页号 " + pb.getCurrentPage());  
  102.         System.out.println("是否是第一个页? " + pb.isFirstPage());  
  103.         System.out.println("是否是最后页? " + pb.isLastPage());  
  104.         System.out.println("存在上一页? " + pb.isHasPreviousPage());  
  105.         System.out.println("存在下一页? " + pb.isHasNextPage());  
  106.         System.out.println("每页的记录数 " + pb.getPageSize());  
  107.         System.out.println("总页数 " + pb.getTotalPage());  
  108.         System.out.println("总记录数 " + pb.getAllRow());  
  109.         long end = new Date().getTime();  
  110.         System.out.println("花费时间：" + (double) (end - start) / 1000 + "秒");  
  111.   
  112.     }  
  113.   
  114. }  

 分页类有个小bug

 分页的前台scrip

Js代码  收藏代码
  1. function changepage(pid){  
  2.         var url="";  
  3.         if(pid=='1'){  
  4.             window.location=url+"&page=1";  
  5.         }  
  6.         if(pid=='2'){  
  7.             window.location=url+"&page=${dataList.currentPage-1}";  
  8.         }  
  9.         if(pid=='3'){  
  10.             window.location=url+"&page=${dataList.currentPage+1}";  
  11.         }  
  12.         if(pid=='4'){  
  13.             window.location=url+"&page=${dataList.totalPage}";  
  14.         }  
  15.     }  

 

前台分页java

Java代码  收藏代码
  1. <table>  
  2. <tr>  
  3. <td>  
  4. <table>  
  5. <c:forEach items="${dataList.list}" var="m"> ${m}</c:forEach>  
  6. </table>  
  7. </td>  
  8. </tr>  
  9. <tr>  
  10. <td>  
  11. <table width="100%" border="0" cellspacing="2" cellpadding="0">  
  12.                         <tr>  
  13.                             <td height="25" align="center">  
  14.                                 <div id="page" class="txt_p">  
  15.                                     共${dataList.totalPage}页  
  16.                                     <c:choose>  
  17.                                         <c:when test="${dataList.hasPreviousPage}">  
  18.                                             <a href="javascript:changepage('1')">首页</a>  
  19.                                             <a href="javascript:changepage('2')"> <img  
  20.                                                     src="${skinPath}images/hygl/left_h.gif" align="absmiddle"  
  21.                                                     border="0" /> </a>  
  22.                                             <a href="javascript:changepage('2')">上一页</a>  
  23.                                         </c:when>  
  24.                                         <c:otherwise>  
  25.                                             首页  
  26.                                         <img src="${skinPath}images/hygl/left_b.gif" align="absmiddle" />上一页  
  27.                                         </c:otherwise>  
  28.                                     </c:choose>  
  29.                                     第${dataList.currentPage}页  
  30.                                     <c:choose>  
  31.                                         <c:when test="${dataList.hasNextPage}">  
  32.                                             <a href="javascript:changepage('3')">下一页</a>  
  33.                                             <a href="javascript:changepage('3')"> <img  
  34.                                                     src="${skinPath}images/hygl/right_h.gif" align="absmiddle"  
  35.                                                     border="0" /> </a>  
  36.                                             <a href="javascript:changepage('4')">尾页</a>  
  37.                                         </c:when>  
  38.                                         <c:otherwise>  
  39.                                               下一页<img  
  40.                                                 src="${skinPath}images/hygl/right_b.gif" align="absmiddle" />尾页  
  41.                                          </c:otherwise>  
  42.                                     </c:choose>  
  43.                                 </div>  
  44.                             </td>  
  45.                         </tr>  
  46.                     </table>  
  47. </td>  
  48. </tr>  
  49.   
  50. </table>  

posted on 2011-09-07 19:31  zhou518zhou  阅读(478)  评论(0)  编辑  收藏  举报

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