先来看看效果图：
由于我没"D:\opt\lucene\index"，所以不能搜索出东东...
下载地址：
http://apache.dataguru.cn/lucene/java/2.9.4/
lucene-2.9.4-src.zip (包含源码)
项目结构：
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源码部分
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/luceneweb/WebContent/configuration.jsp
1 <!-- 2 Licensed to the Apache Software Foundation (ASF) under one or more 3 contributor license agreements. See the NOTICE file distributed with 4 this work for additional information regarding copyright ownership. 5 The ASF licenses this file to You under the Apache License, Version 2.0 6 the "License"); you may not use this file except in compliance with 7 the License. You may obtain a copy of the License at 8 9 http://www.apache.org/licenses/LICENSE-2.0 10 11 Unless required by applicable law or agreed to in writing, software 12 distributed under the License is distributed on an "AS IS" BASIS, 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 See the License for the specific language governing permissions and 15 limitations under the License. 16 --> 17 <% 18 /* Author: Andrew C. Oliver (acoliver2@users.sourceforge.net) */ 19 String appTitle = "Apache Lucene Example - Intranet Server Search Application"; 20 /* make sure you point the below string to the index you created with IndexHTML */ 21 String indexLocation = "/opt/lucene/index"; 22 String appfooter = "Apache Lucene Template WebApp 1.0"; 23 %>
/luceneweb/WebContent/footer.jsp
1 <!-- 2 Licensed to the Apache Software Foundation (ASF) under one or more 3 contributor license agreements. See the NOTICE file distributed with 4 this work for additional information regarding copyright ownership. 5 The ASF licenses this file to You under the Apache License, Version 2.0 6 the "License"); you may not use this file except in compliance with 7 the License. You may obtain a copy of the License at 8 9 http://www.apache.org/licenses/LICENSE-2.0 10 11 Unless required by applicable law or agreed to in writing, software 12 distributed under the License is distributed on an "AS IS" BASIS, 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 See the License for the specific language governing permissions and 15 limitations under the License. 16 --> 17 <% /* Author Andrew C. Oliver (acoliver2@users.sourceforge.net) */ %> 18 <p align="center"> 19 <%=appfooter%> 20 </p> 21 </body> 22 </html>
/luceneweb/WebContent/header.jsp
1 <!-- 2 Licensed to the Apache Software Foundation (ASF) under one or more 3 contributor license agreements. See the NOTICE file distributed with 4 this work for additional information regarding copyright ownership. 5 The ASF licenses this file to You under the Apache License, Version 2.0 6 the "License"); you may not use this file except in compliance with 7 the License. You may obtain a copy of the License at 8 9 http://www.apache.org/licenses/LICENSE-2.0 10 11 Unless required by applicable law or agreed to in writing, software 12 distributed under the License is distributed on an "AS IS" BASIS, 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 See the License for the specific language governing permissions and 15 limitations under the License. 16 --> 17 <%@include file="configuration.jsp"%> 18 <% /* Author: Andrew C. Oliver (acoliver2@users.sourceforge.net */ %> 19 <html> 20 <head> 21 <title><%=appTitle%></title> 22 </head> 23 <body> 24 25 <p align="center"> 26 Welcome to the Lucene Template application. (This is the header) 27 </p>
/luceneweb/WebContent/index.jsp
1 <!-- 2 Licensed to the Apache Software Foundation (ASF) under one or more 3 contributor license agreements. See the NOTICE file distributed with 4 this work for additional information regarding copyright ownership. 5 The ASF licenses this file to You under the Apache License, Version 2.0 6 the "License"); you may not use this file except in compliance with 7 the License. You may obtain a copy of the License at 8 9 http://www.apache.org/licenses/LICENSE-2.0 10 11 Unless required by applicable law or agreed to in writing, software 12 distributed under the License is distributed on an "AS IS" BASIS, 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 See the License for the specific language governing permissions and 15 limitations under the License. 16 --> 17 <%@include file="header.jsp"%> 18 <% /* Author: Andrew C. Oliver (acoliver2@users.sourceforge.net) */ %> 19 <center> 20 <form name="search" action="results.jsp" method="get"> 21 <p> 22 <input name="query" size="44"/> Search Criteria 23 </p> 24 <p> 25 <input name="maxresults" size="4" value="100"/> Results Per Page 26 <input type="submit" value="Search"/> 27 </p> 28 </form> 29 </center> 30 <%@include file="footer.jsp"%>
/luceneweb/WebContent/results.jsp
1 <!-- 2 Licensed to the Apache Software Foundation (ASF) under one or more 3 contributor license agreements. See the NOTICE file distributed with 4 this work for additional information regarding copyright ownership. 5 The ASF licenses this file to You under the Apache License, Version 2.0 6 the "License"); you may not use this file except in compliance with 7 the License. You may obtain a copy of the License at 8 9 http://www.apache.org/licenses/LICENSE-2.0 10 11 Unless required by applicable law or agreed to in writing, software 12 distributed under the License is distributed on an "AS IS" BASIS, 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 See the License for the specific language governing permissions and 15 limitations under the License. 16 --> 17 <%@ page import="javax.servlet.*, javax.servlet.http.*, java.io.*, org.apache.lucene.analysis.*, org.apache.lucene.analysis.standard.StandardAnalyzer, org.apache.lucene.document.*, org.apache.lucene.index.*, org.apache.lucene.store.*, org.apache.lucene.search.*, org.apache.lucene.queryParser.*, org.apache.lucene.demo.*, org.apache.lucene.demo.html.Entities, java.net.URLEncoder, org.apache.lucene.util.Version"%> 18 19 <% 20 /* 21 Author: Andrew C. Oliver, SuperLink Software, Inc. (acoliver2@users.sourceforge.net) 22 23 This jsp page is deliberatly written in the horrible java directly embedded 24 in the page style for an easy and concise demonstration of Lucene. 25 Due note...if you write pages that look like this...sooner or later 26 you'll have a maintenance nightmare. If you use jsps...use taglibs 27 and beans! That being said, this should be acceptable for a small 28 page demonstrating how one uses Lucene in a web app. 29 30 This is also deliberately overcommented. ;-) 31 32 */ 33 %> 34 <%!public String escapeHTML(String s) { 35 s = s.replaceAll("&", "&"); 36 s = s.replaceAll("<", "<"); 37 s = s.replaceAll(">", ">"); 38 s = s.replaceAll("\"", """); 39 s = s.replaceAll("'", "'"); 40 return s; 41 }%> 42 <%@include file="header.jsp"%> 43 <% 44 boolean error = false; //used to control flow for error messages 45 String indexName = indexLocation; //local copy of the configuration variable 46 IndexSearcher searcher = null; //the searcher used to open/search the index 47 Query query = null; //the Query created by the QueryParser 48 TopDocs hits = null; //the search results 49 int startindex = 0; //the first index displayed on this page 50 int maxpage = 50; //the maximum items displayed on this page 51 String queryString = null; //the query entered in the previous page 52 String startVal = null; //string version of startindex 53 String maxresults = null; //string version of maxpage 54 int thispage = 0; //used for the for/next either maxpage or 55 //hits.totalHits - startindex - whichever is 56 //less 57 58 try { 59 IndexReader reader = IndexReader.open(FSDirectory.open(new File(indexName)), true); // only searching, so read-only=true 60 searcher = new IndexSearcher(reader); //create an indexSearcher for our page 61 //NOTE: this operation is slow for large 62 //indices (much slower than the search itself) 63 //so you might want to keep an IndexSearcher 64 //open 65 66 } catch (Exception e) { //any error that happens is probably due 67 //to a permission problem or non-existant 68 //or otherwise corrupt index 69 %> 70 <p>ERROR opening the Index - contact sysadmin!</p> 71 <p> 72 Error message: 73 <%=escapeHTML(e.getMessage())%></p> 74 <% 75 error = true; //don't do anything up to the footer 76 } 77 %> 78 <% 79 if (error == false) { //did we open the index? 80 queryString = request.getParameter("query"); //get the search criteria 81 startVal = request.getParameter("startat"); //get the start index 82 maxresults = request.getParameter("maxresults"); //get max results per page 83 try { 84 maxpage = Integer.parseInt(maxresults); //parse the max results first 85 startindex = Integer.parseInt(startVal); //then the start index 86 } catch (Exception e) { 87 } //we don't care if something happens we'll just start at 0 88 //or end at 50 89 90 if (queryString == null) 91 throw new ServletException("no query " + //if you don't have a query then 92 "specified"); //you probably played on the 93 //query string so you get the 94 //treatment 95 96 Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_CURRENT); //construct our usual analyzer 97 try { 98 QueryParser qp = new QueryParser("contents", analyzer); 99 query = qp.parse(queryString); //parse the 100 } catch (ParseException e) { //query and construct the Query 101 //object 102 //if it's just "operator error" 103 //send them a nice error HTML 104 %> 105 <p> 106 Error while parsing query: 107 <%=escapeHTML(e.getMessage())%></p> 108 <% 109 error = true; //don't bother with the rest of 110 //the page 111 } 112 } 113 %> 114 <% 115 if (error == false && searcher != null) { // if we've had no errors 116 // searcher != null was to handle 117 // a weird compilation bug 118 thispage = maxpage; // default last element to maxpage 119 hits = searcher.search(query, maxpage + startindex); // run the query 120 if (hits.totalHits == 0) { // if we got no results tell the user 121 %> 122 <p>I'm sorry I couldn't find what you were looking for.</p> 123 <% 124 error = true; // don't bother with the rest of the 125 // page 126 } 127 } 128 129 if (error == false && searcher != null) { 130 %> 131 <table> 132 <tr> 133 <td>Document</td> 134 <td>Summary</td> 135 </tr> 136 <% 137 if ((startindex + maxpage) > hits.totalHits) { 138 thispage = hits.totalHits - startindex; // set the max index to maxpage or last 139 } // actual search result whichever is less 140 141 for (int i = startindex; i < (thispage + startindex); i++) { // for each element 142 %> 143 <tr> 144 <% 145 Document doc = searcher.doc(hits.scoreDocs[i].doc); //get the next document 146 String doctitle = doc.get("title"); //get its title 147 String url = doc.get("path"); //get its path field 148 if (url != null && url.startsWith("../webapps/")) { // strip off ../webapps prefix if present 149 url = url.substring(10); 150 } 151 if ((doctitle == null) || doctitle.equals("")) //use the path if it has no title 152 doctitle = url; 153 //then output! 154 %> 155 <td><a href="<%=url%>"><%=doctitle%></a></td> 156 <td><%=doc.get("summary")%></td> 157 </tr> 158 <% 159 } 160 %> 161 <% 162 if ((startindex + maxpage) < hits.totalHits) { //if there are more results...display 163 //the more link 164 165 String moreurl = "results.jsp?query=" + URLEncoder.encode(queryString) + //construct the "more" link 166 "&maxresults=" + maxpage + "&startat=" + (startindex + maxpage); 167 %> 168 <tr> 169 <td></td> 170 <td><a href="<%=moreurl%>">More Results>></a></td> 171 </tr> 172 <% 173 } 174 %> 175 </table> 176 177 <% 178 } //then include our footer. 179 if (searcher != null) 180 searcher.close(); 181 %> 182 <%@include file="footer.jsp"%>