Nutch2.1+mysql+solr3.6.1+中文网站抓取

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1、mysql 数据库配置

linux mysql安装步骤省略。

创建数据库与表

 CREATE DATABASE nutch DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;    CREATE TABLE `webpage` (        `id` varchar(767) CHARACTER SET latin1 NOT NULL,        `headers` blob,        `text` mediumtext DEFAULT NULL,        `status` int(11) DEFAULT NULL,        `markers` blob,        `parseStatus` blob,        `modifiedTime` bigint(20) DEFAULT NULL,        `score` float DEFAULT NULL,        `typ` varchar(32) CHARACTER SET latin1 DEFAULT NULL,        `baseUrl` varchar(512) CHARACTER SET latin1 DEFAULT NULL,        `content` mediumblob,        `title` varchar(2048) DEFAULT NULL,        `reprUrl` varchar(512) CHARACTER SET latin1 DEFAULT NULL,        `fetchInterval` int(11) DEFAULT NULL,        `prevFetchTime` bigint(20) DEFAULT NULL,        `inlinks` mediumblob,        `prevSignature` blob,        `outlinks` mediumblob,        `fetchTime` bigint(20) DEFAULT NULL,        `retriesSinceFetch` int(11) DEFAULT NULL,        `protocolStatus` blob,        `signature` blob,        `metadata` blob,        PRIMARY KEY (`id`)    ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

2、安装nutch2.1
A、 nutch下载地址：http://apache.etoak.com/nutch/2.1/apache-nutch-2.1-src.zip

下载完成后家压缩，

B、以下将nutch的根目录定位${APACHE_NUTCH_HOME}.

C、配置nutch对mysql的支持，修改${APACHE_NUTCH_HOME}/ivy/ivy.xml文件

将这行的注释取消<dependency org=”mysql” name=”mysql-connector-java” rev=”5.1.18″ conf=”*->default”/>

修改${APACHE_NUTCH_HOME}/conf/gora.properties文件，

注释默认存储配置

 ###############################    # Default SqlStore properties #    ###############################    #gora.sqlstore.jdbc.driver=org.hsqldb.jdbc.JDBCDriver    #gora.sqlstore.jdbc.url=jdbc:hsqldb:hsql://localhost/nutchtest    #gora.sqlstore.jdbc.user=sa    #gora.sqlstore.jdbc.password=        取消以下代码注释，    ###############################    # MySQL properties                ################################    gora.sqlstore.jdbc.driver=com.mysql.jdbc.Driver    gora.sqlstore.jdbc.url=jdbc:mysql://localhost:3306/nutch?createDatabaseIfNotExist=true    gora.sqlstore.jdbc.user=xxxxx（mysql用户名）    gora.sqlstore.jdbc.password=xxxxx（mysql密码）

D、修改${APACHE_NUTCH_HOME}/conf/nutch-site.xml 加入如下代码：

    <property>    <name>http.agent.name</name>    <value>Your Nutch Spider</value>    </property>    <property>    <name>http.accept.language</name>    <value>ja-jp, en-us,en-gb,en;q=0.7,*;q=0.3</value>    <description>Value of the “Accept-Language” request header field.    This allows selecting non-English language as default one to retrieve.    It is a useful setting for search engines build for certain national group.    </description>    </property>    <property>    <name>parser.character.encoding.default</name>    <value>utf-8</value>    <description>The character encoding to fall back to when no other information    is available</description>    </property>    <property>    <name>storage.data.store.class</name>    <value>org.apache.gora.sql.store.SqlStore</value>    <description>The Gora DataStore class for storing and retrieving data.    Currently the following stores are available: ….    </description>    </property>

E、使用ant编译 ${APACHE_NUTCH_HOME} 。

F、设置待抓取的网站

  cd ${APACHE_NUTCH_HOME}/runtime/local
    mkdir -p urls
    echo 'http://nutch.apache.org/' > urls/seed.txt

G、执行爬行操作： bin/nutch crawl urls -depth 3 -topN 5

执行完在mysql中即可以查看到爬虫抓取的内容

3、安装solr，对nutch抓取的内容进行索引

（注意：参考资料中推荐使用solr4.0版本，4.0的两个版本我都试了，没有成功，所以替换为3.6.1版本）

solr下载地址：http://www.fayea.com/apache-mirror/lucene/solr/3.6.1/apache-solr-3.6.1.zip

A、解压缩下载包，

B、下载 http://nlp.solutions.asia/wp-content/uploads/2012/08/schema.xml替换${APACHE_SOLR_HOME}/example/solr/conf/schema.xml.

C、启动solr

cd ${APACHE_SOLR_HOME}/example