在Eclipse中运行Nutch2.3

参考http://wiki.apache.org/nutch/RunNutchInEclipse

一、环境准备

1、下载nutch2.3源代码

wget http://mirror.bit.edu.cn/apache/nutch/2.3/apache-nutch-2.3-src.tar.gz

或者下载正在开发中的最新版本

 svn co https://svn.apache.org/repos/asf/nutch/branches/2.x

2、选择使用的数据库类型，以hbase为例
在conf/nutch-site.xml中增加以下属性：

<property>
  <name>storage.data.store.class</name>
  <value>org.apache.gora.hbase.store.HBaseStore</value>
  <description>Default class for storing data</description>
 </property>

3、在ivy/ivy.xml中增加与hbase相关的依赖项，此项本已存在，但被注释掉，将注释去掉即可

<dependency org="org.apache.gora" name="gora-hbase" rev="0.5" conf="*->default” />

注意，rev=0.5对应hbase0.94，rev=0.3对应hbase0.90.4

4、在nutch.xml中增加以下3个属性

<property>
   <name>http.agent.name</name>
   <value>My Nutch Spider</value>
 </property>
<property>
   <name>http.robots.agents</name>
   <value>none</value>
 </property>
<property>
   <name>plugin.folders</name>
   <value>/Users/liaoliuqing/0_Search/1_Nutch/1_Official/apache-nutch-2.3/build/plugins</value>
 </property>

其中plugin.folders的值为$NUTCH_HOME/build/plugins

5、执行ant eclipse

二、导入project

1、导入project

2、在build path中，将apche-nutch-2.3/conf放到最上面，即点击top按键

三、运行程序

1、Run as ----> Run configuration，选择project与主类

2、填写参数

/Users/liaoliuqing/Downloads/seed.txt

-Dhadoop.log.dir=logs -Dhadoop.log.file=hadoop.log

3、点击run，输出结果如下：

InjectorJob: starting at 2015-01-28 16:27:43
InjectorJob: Injecting urlDir: /Users/liaoliuqing/Downloads/seed.txt
InjectorJob: Using class org.apache.gora.hbase.store.HBaseStore as the Gora storage class.
InjectorJob: total number of urls rejected by filters: 0
InjectorJob: total number of urls injected after normalization and filtering: 1
Injector: finished at 2015-01-28 16:27:47, elapsed: 00:00:04

注意，在运行程序前，本机需要先启动hbase。

4、查看hbase中的数据

hbase(main):003:0> scan 'webpage'
ROW                                         COLUMN+CELL                                                                                                                 
 com.163.www:http/                          column=f:fi, timestamp=1422433667377, value=x00'x8Dx00                                                                   
 com.163.www:http/                          column=f:ts, timestamp=1422433667377, value=x00x00x01K/xA7:x14                                                         
 com.163.www:http/                          column=mk:_injmrk_, timestamp=1422433667377, value=y                                                                        
 com.163.www:http/                          column=mk:dist, timestamp=1422433667377, value=0                                                                            
 com.163.www:http/                          column=mtdt:_csh_, timestamp=1422433667377, value=?x80x00x00                                                             
 com.163.www:http/                          column=s:s, timestamp=1422433667377, value=?x80x00x00                                                                    
1 row(s) in 0.2970 seconds