php引入lucene搜索引擎方法.

1、lucene包的下载地址:http://apache.etoak.com/lucene/java/3.3.0/

2、下载jdk环境

3、下载JavaBridge URL:http://sourceforge.net/projects/php-java-bridge/

步骤：

1安装好jdk

2下载的JavaBridge.jar拷到php的ext 文件夹下.

3用rar压缩软件打开javaBridge.jar找到java文件夹,该文件夹下大都是后缀是.inc格式文件.把java整个考到www/php_java/下.

4双击javaBridge.jar打开8080端口

5在php_java下写php测试文件

 <?php

 require_once("java/Java.inc");

 header("content-type:text/html; charset=utf-8");
 // get instance of Java class java.lang.System in PHP
 $system = new Java('java.lang.System');
 $s = new Java("java.lang.String", "php-java-bridge config...<br><br>");
 echo $s;

 // demonstrate property access
 print 'Java version='.$system->getProperty('java.version').' <br>';
 print 'Java vendor=' .$system->getProperty('java.vendor').' <br>';
 print 'OS='.$system->getProperty('os.name').' '.
 $system->getProperty('os.version').' on '.
 $system->getProperty('os.arch').' <br>';

 // java.util.Date example
 $formatter = new Java('java.text.SimpleDateFormat',
 "EEEE, MMMM dd, yyyy 'at' h:mm:ss a zzzz");

 print $formatter->format(new Java('java.util.Date'));

 ?>

结果:

php-java-bridge config...

Java version=1.6.0_10-rc2 
Java vendor=Sun Microsystems Inc. 
OS=Windows XP 5.1 on x86 
星期五, 八月 12, 2011 at 9:38:16 上午 中国标准时间Java version=1.6.0_10-rc2 

用eclipse写一个TestLucene包类命名为TxtFileIndexer.java 

 package TestLucene;

 import java.io.File;
 import java.io.FileReader;
 import java.io.Reader;
 import java.util.Date;

 import org.apache.lucene.analysis.Analyzer;
 import org.apache.lucene.analysis.standard.StandardAnalyzer;
 import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field;
 import org.apache.lucene.index.IndexWriter;
 import org.apache.lucene.index.Term;
 import org.apache.lucene.search.Hits;
 import org.apache.lucene.search.IndexSearcher;
 import org.apache.lucene.search.TermQuery;
 import org.apache.lucene.store.FSDirectory;

 public class TxtFileIndexer ...{

     public String test() ...{
         return "test is ok hohoho";
     }

     /**//**
      * @param args
      */
     public String createIndex(String indexDir_path,String dataDir_path) throws Exception ...{
         String result = "";
         File indexDir = new File(indexDir_path);
         File dataDir = new File(dataDir_path);
         Analyzer luceneAnalyzer = new StandardAnalyzer();
         File[] dataFiles = dataDir.listFiles();
         IndexWriter indexWriter = new IndexWriter(indexDir,luceneAnalyzer,true);
         long startTime = new Date().getTime();
         for(int i=0; i < dataFiles.length; i++) ...{
             if(dataFiles[i].isFile() && dataFiles[i].getName().endsWith(".html")) ...{
                 result += "Indexing file" + dataFiles[i].getCanonicalPath()+"<br />";
                 Document document = new Document();
                 Reader txtReader = new FileReader(dataFiles[i]);
                 document.add(Field.Text("path",dataFiles[i].getCanonicalPath()));
                 document.add(Field.Text("contents",txtReader));
                 indexWriter.addDocument(document);
             }
         }

         indexWriter.optimize();
         indexWriter.close();
         long endTime = new Date().getTime();

         result += "It takes"+(endTime-startTime)
                 + " milliseconds to create index for the files in directory "
                 + dataDir.getPath();
         return result;
     }

     public String searchword(String ss,String index_path)  throws Exception  ...{
         String queryStr = ss;
         String result = "Result:<br />";
         //This is the directory that hosts the Lucene index
         File indexDir = new File(index_path);
         FSDirectory directory = FSDirectory.getDirectory(indexDir,false);
         IndexSearcher searcher = new IndexSearcher(directory);
         if(!indexDir.exists())...{
             result = "The Lucene index is not exist";
             return result;
         }
         Term term = new Term("contents",queryStr.toLowerCase());
         TermQuery luceneQuery = new TermQuery(term);
         Hits hits = searcher.search(luceneQuery);
         for(int i = 0; i < hits.length(); i++)...{
             Document document = hits.doc(i);
             result += "<br /><a href='getfile.php?w="+ss+"&f="+document.get("path")+"'>File: " + document.get("path")+"</a>\n";
         }
         return result;
     }

 }

先创建一个我们写的TxtFileIndexer类的实例，

 $tf = new Java('TestLucene.TxtFileIndexer');

然后就按正常PHP类的调用方法的方式进行调用，首先创建索引：

 $data_path = "F:/test/php_lucene/htdocs/data/manual"; //定义被索引内容的目录
 $index_path = "F:/test/php_lucene/htdocs/data/search"; //定义生成的索引文件存放目录
 $s = $tf->createIndex($index_path,$data_path); //调用Java类的方法
 print $s; //打印返回的结果

 

 $index_path = "F:/test/php_lucene/htdocs/data/search"; //定义生成的索引文件存放目录

 $s = $tf->searchword("here is keyword for search",$index_path);

 print $s;

 <span style="color:#000000;">java_require(</span><span style="color:#000000;">"</span><span style="color:#000000;">F:/test/php_lucene/htdocs/lib/</span><span style="color:#000000;">"</span><span style="color:#000000;">); </span><span style="color:#008000;">//</span><span style="color:#008000;">这是个例子，我的类和Lucene都放到这个目录下，这样就可以了，是不是很简单。 </span>

 <span style="color:#008000;">测试代码</span>
 <pre class="php" name="code"><?php

     error_reporting(0);

     java_require("F:/test/php_lucene/htdocs/lib/");

     $tf = new Java('TestLucene.TxtFileIndexer');
     $s = $tf->test();
     print "TestLucene.TxtFileIndexer->test()<br />".$s;
     echo "<hr />";

     $data_path = "F:/test/php_lucene/htdocs/data/manual";
     $index_path = "F:/test/php_lucene/htdocs/data/search";

     if(<pre class="php" name="code">{1}</pre><br>
 GET["action"] == "create") ...{ $s = $tf->createIndex($index_path,$data_path); print $s; }else ...{ echo "<form method=get> <input type=text name=w /><input type=submit value=search /><br />"; if(<pre class="php" name="code">{1}</pre><br>
 GET["w"] != "") ...{ $s = $tf->searchword(<pre class="php" name="code">{1}</pre><br>
 GET["w"],$index_path); print $s; } }?>
 <pre></pre>
 <br>
 <pre></pre>
 转载:<a href="http://www.lucene.com.cn/php.htm">http://www.lucene.com.cn/php.htm</a><br>

 </pre>