搜索引擎 apache-solr

ssplyh

SOLR

1.Solr server setup

l Java environment setup

Download linux JDK 6 from this website :

http://java.sun.com/javase/downloads/index.jsp

After installing JDK, edit /ect/profile , add these code to the end of the file

JAVA_HOME=/usr/java/jdk1.6.0_16

PATH=$JAVA_HOME/bin:$PATH

CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

export JAVA_HOME

export PATH

export CLASSPATH

/usr/java/jdk1.6.0_16 is the folder of the jdk. You should change it ,if you don’t install jdk in this folder.

l Solr setup

1.Download solr (apache-solr-1.3.0.zip ) from this website:  

http://ftp.kddilabs.jp/infosystems/apache/lucene/solr/

2.Install solr with following steps

#unzip -q apache-solr-1.3.0.zip#cd apache-solr-1.3.0/example/# java -jar start.jar           we can see that the Solr is running by loading http://localhost:8983/solr/admin/ in web browser. This is the main starting point for Administering Solr.  This is tutorial of solr http://lucene.apache.org/solr/tutorial.html.
  

2.Search Apach solr with php.

This is a tutorial of php solr client example:

http://www.ibm.com/developerworks/opensource/library/os-php-apachesolr/

We use PHP Solr Client to access to solr server . Download PHP Solr Client from this website: http://code.google.com/p/solr-php-client/downloads/list

l Change default Solr index data schema.

Solr index data schema is in the folder of “apache-solr-1.3.0\example\solr\conf\ schema.xml”

This is the snippet of solr schema.

...          ...  id ... text ...  

Edit the field element , change it as below:

product_name

To make this change active ,we have to restart Solr server as command like this:

#java -jar start.jar

l Create index by PHP

using php solr client , we can access to Solr easily.This is an example fo how to create an index by php.

l   Search index by PHP .

This is an example of searching index by php

l    delete index by PHP

l update index by PHP

If we want to update a document to index , there are two methods to resolve it :

     Method 1: delete the document by id, and then add an new one to index.

     Method 2: use the add method to directly add the document to index , because id is an indentify field, Solr server will use new document to cover the old one.

　　如何使Solr支持中文，日文和英文的全文搜索呢。apache提供提供了一个 cjk库函数供我们使用，具体使用参考：http://chaifeng.com/blog/2008/01/_apache_solr.html

　　默认情况下 Apache Solr 是不支持中文检索的，如果文档中包含中文，必须用完整的一句中文才能检索出内容。
下面以 Apache Solr 的演示程序为例，注意：粗体部分是需要修改的地方。
找到如下三行：
     
      
         
修改为：
     
      
         
找到如下两行：
      
         
修改为：
      
         
修改完毕，重新运行 Apache Solr 就可以对中文进行检索了，原先已经导入的文档需要重新导入。
记住原先的配置中有个 positionIncrementGap="100" 一定要删除了，否则会有异常。                           
　　注意：如果是php编程，一定要让程序代码的编码格式为utf-8编码形式，不然创建索引会失败。