lucene分页

最新推荐文章于 2020-06-05 15:07:35 发布

原创最新推荐文章于 2020-06-05 15:07:35 发布 · 2k 阅读

CC 4.0 BY-SA版权

文章标签：

#lucene #import #string #null #vector #exception

一、输入关键字的lucene.html
<html>
<body>
<form name= "form1 " method= "post " action= "search.jsp ">
请输入关键字： <input type= "text " name= "keyword ">
<input type= "submit " name= "Submit " value= "提交 ">
</form>
</body>
</html>
二、进行搜索和显示结果的search.jsp <%@ 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( "没有找到索引文件！ ");
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( "对不起！没有找到你所需要的资源. ");
error = true;
}
}
if (error == false && searcher != null) {
out.print( "搜索关键字： "+ queryString+ " ");
//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( "找到的资源 ");
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+ " ");
}
HTML = pagination.buildHTML( "600 ");
out.print(HTML);
}
}

}