search.jsp.bak

一个用java做的搜索

<%@ page contentType="text/html; charset=gb2312" %>
<%@ page import="java.util.*" %>
<%@ page import="java.text.SimpleDateFormat" %>
<%@ page import = "org.apache.lucene.analysis.standard.StandardAnalyzer" %> 
<%@ page import="org.apache.lucene.index.IndexReader" %>
<%@ page import="org.apache.lucene.document.Document" %>
<%@ page import="org.apache.lucene.search.IndexSearcher" %> 
<%@ page import="org.apache.lucene.search.Hits" %> 
<%@ page import="org.apache.lucene.search.Query" %> 
<%@ page import="page.Pagination" %>


<%@ page import="org.apache.lucene.queryParser.QueryParser" %> 
<%@ page import ="org.apache.lucene.analysis.Analyzer" %>
 <% 
     String queryString = request.getParameter("keyword");  
    
     if (queryString == null||queryString.length()==0){
               out.println("搜索关键字不能为空");
                        
     }else{
         queryString=new String(queryString.getBytes("ISO8859_1"));
        String indexPath=getServletContext().getRealPath("/")+"index";    
        boolean error = false;    
        Document doc;            
        
        IndexSearcher searcher = null;         
        Query query = null;                    
        Hits hits = null;                      
        
        try {
        searcher = new IndexSearcher(IndexReader.open(indexPath));
        } catch (Exception e) {                         
                out.print("<p>没有找到索引文件！</p>");
                out.print(e.getMessage());   
                error = true;                                
        }

       if (error == false) {                                          
               Analyzer analyzer = new StandardAnalyzer();
               try {
                        query = QueryParser.parse(queryString, "Article_name", analyzer);  

                } catch (Exception e) {                         
                        out.print(e.getMessage());
                        error = true;                                 
                                                                      
                }
        }

        if (error == false && searcher != null) {                     
                                                                    
                hits = searcher.search(query);                        
                if (hits.length() == 0) { 
		    out.print("<p><font color=red> 对不起！没有找到你所需要的资源.</font> </p>");
                  error = true;                                        
                }
        }

        if (error == false && searcher != null) {   
              out.print("<font color=red>搜索关键字：</font>"+ queryString+ "<br>");  
              //Pagination类是网上下载的，需要传递一个向量，你可以改,这样就不用做二遍事  
              Vector list=new Vector();
              for(int i=0;i<hits.length();i++){
                doc = hits.doc(i);     
                list.add(doc);
              }    
              
              out.print("<font color=red>找到的资源</font><br>");
              Pagination pagination = null;
              String pageNumber = request.getParameter("pageNumber");
       
              int showItemNumber = 10;
              if (pageNumber == null) {
                  pageNumber = "1";
              }
              String HTML = "";
              if (list != null && list.size() > 0) {
                 pagination = new Pagination(); 
                 pagination.setPageNumber(Integer.parseInt(pageNumber));
                 pagination.setShowItemNumber(showItemNumber);
                 pagination.setVisitPageURL("search.jsp?keyword="+queryString);
                 list =(Vector) pagination.interceptListByStarItemNumber(list);
                 for(int i=0;i<list.size();i++)
                 {
                   doc =(Document) list.get(i);     
                   String A_id=doc.get("Article_id");               
                   String doctitle = doc.get("Article_name");            
                   String url = doc.get("File_name")+"?id="+A_id;                   
                       
                   out.print("<a href='http://127.0.0.1:8080/cwbwebhome/"+url+"'>(★) "+doctitle+"</a><br>");

                  }
                 HTML = pagination.buildHTML("600");
                 out.print(HTML);
               }

        }       
             
 }

%>