Apache SOLR uses

I. Introduction of SOLR

Recently in a project to do a full-text search function, initially intended to use Apache Lucene to achieve, after all, before the Lucene have a little understanding, but in the Internet to see the technical articles when they saw someone introduced Apache SOLR, feel very good,

is also an open source search server, mainly based on HTTP and Apache Lucene implementation. The resources stored in Apache Solr are stored in Document as objects, highlighting search results with their own Chinese word segmentation technology.

Ii. SOLR Configuration

First step: Download SOLR, HTTP://WWW.APACHE.ORG/DYN/CLOSER.CGI/LUCENE/SOLR

Unzip to the 3.6.1 version of the download, unzip it to the E-drive. e:/apache-solr-3.6.1

Step Two: Modify the Conf\server.xml to change the line where the port 8080 is located as follows:

<connector port= "8080" protocol= "http/1.1"

connectiontimeout= "20000"

Redirectport= "8443" uriencoding= "UTF-8"/>

Added the uriencoding= "UTF-8" configuration.

Step Three: Configure SOLR

In the Tomcat conf directory, add the Catalina\localhost\solr.xml file, if the Conf folder does not have Catalina, create it.

Solr.xml content:

<context docbase= "E:/apache-solr-3.6.1/dist/apache-solr-3.6.1.war" debug= "0" crosscontext= "true" >

<environment name= "Solr/home" type= "java.lang.String" value= "E:/APACHE-SOLR-3.6.1/EXAMPLE/SOLR" override= "true" /></context>

Fourth step: Start Tomcat. The input http://localhost:8080/solr/appears as a welcome interface, indicating success.

Iii. Use of SOLR

When invoking the SOLR service, Apache-solr-solrj-3.6.1.jar,apache has already provided us with the SOLRJ tool, and we simply import the relevant packages and use their simple APIs to easily manipulate SOLR.

Establish a connection to the SOLR service

String url = "HTTP://10.13.17.38:8983/SOLR";

Commonshttpsolrserver Server = new Commonshttpsolrserver (URL);

Server.setsotimeout (3000); Socket Read timeout

Server.setconnectiontimeout (1000);

Server.setdefaultmaxconnectionsperhost (1000);

Server.setmaxtotalconnections (10);

Server.setfollowredirects (FALSE); Defaults to False

Server.setallowcompression (TRUE);

Server.setmaxretries (1);

Settings for search criteria

Solrquery query = new Solrquery ();

Query.setquery ("Tags:t5 and T7");

Query.addfield ("auction_id");

Query.setstart (0);

Query.setrows (4);

Query.addsortfield ("auction_id", SolrQuery.ORDER.desc);

Query.addsortfield ("Auction_point", SOLRQUERY.ORDER.ASC);

Set highlighting

Query.sethighlight (TRUE); Turn on Highlight components

Query.addhighlightfield ("content");//Highlight Field

Query.addhighlightfield ("Titlestr");//Highlight Field

Query.sethighlightsimplepre ("<font color= ' Red ' >");//tag, highlight keyword prefix

Query.sethighlightsimplepost ("</font>");//suffix

Query.sethighlightsnippets (3);//result shard number, default is 1

Query.sethighlightfragsize (70);//maximum length per shard, default is 100

Add Chinese participle

Modify the Solr\conf\schema.xml file to include the following field type in the file.

<fieldtype name= "Text_zh" class= "SOLR. TextField "

Positionincrementgap= ">"

<analyzer type= "Index" >

<tokenizer

class= "Org.wltea.analyzer.solr.IKTokenizerFactory" usesmart= "false"/>

</analyzer>

<analyzer type= "Query" >

<tokenizer

class= "Org.wltea.analyzer.solr.IKTokenizerFactory" usesmart= "false"/>

</analyzer>

</fieldType>

And then you need to use this type of participle field

<field name= "Content" type= "Text_zh" indexed= "true" stored= "true"/>

Apache SOLR uses