引言

該教程獻給那些剛剛知道nutch這個東西，充滿好奇心想要嘗試卻一臉懵逼的小伙伴們。

nutch源碼下載

簡書上沒有上傳的地方，有點淡淡的憂傷，所以我只有借助<a >CSDN</a>了（走過路過不要錯過，只要2個C幣，業界良心）。

nutch編譯前的配置

• 打開mysql支持

    <!--配置ivy/ivy.xml-->
    <!--ivy也是一種包管理工具，和maven差不多，這里就是添加sql的依賴-->
    <!--解注釋-->
    <dependency org="mysql" name="mysql-connector-java" rev="5.1.18" conf="*->default"/>
    <dependency org="org.apache.gora" name="gora-sql" rev="0.1.1-incubating" conf="*->default" />
    <修改
    <dependency org="org.apache.gora" name="gora-core" rev="0.3" conf="*->default"/>
    <為
    <dependency org="org.apache.gora" name="gora-core" rev="0.2.1" conf="*->default"/>
    <原因
    <!-- Uncomment this to use SQL as Gora backend. It should be noted that the 
    gora-sql 0.1.1-incubating artifact is NOT compatable with gora-core 0.3. Users should 
    downgrade to gora-core 0.2.1 in order to use SQL as a backend. -->
  

• 配置mysql參數

    //conf/gora.properties
    //注釋掉Default SqlStore properties并添加MySQL properties
   //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=root
  gora.sqlstore.jdbc.password=password

• 修改nutch的參數

   <!--將nutch-site.xml.template重命名為nutch-site.xml-->
   <!--conf/nutch-site.xml文件中添加-->
  <property>
       <name>http.agent.name</name>
       <value>LiuXun 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>

   <property>
           <name>generate.batch.id</name>
           <value>*</value>
   </property>

nutch編譯工具的安裝

下載<a >ant</a>并配置path（就這么簡單）

nutch的編譯

• 配置
  將<a >sonar-ant-task-2.1.jar</a>放入nutch根目錄,并修改build.xml

  <!-- Define the Sonar task if this hasn't been done in a common script -->
 <taskdef uri="antlib:org.sonar.ant" resource="org/sonar/ant/antlib.xml">
         <classpath path="${ant.library.dir}" />
         <classpath path="${mysql.library.dir}" />
         <classpath><fileset dir="." includes="sonar*.jar" /></classpath>
 </taskdef>

• ant編譯
  在nutch的根目錄運行ant runtime命令，然后就是漫長的依賴下載時間。
  真是可怕：

Paste_Image.png

預告

下一篇<a href="http://www.lxweimin.com/p/6c8d59d1f920">ubuntu15.10下nutch2.2.1+hbase1.1.1搭建爬蟲平臺(失敗的嘗試)</a>