使用intellij idea 运行nutch 2.2.1 + hbase 0.90.4 + elasticsearch 0.90.5
使用https://github.com/apache/nutch.git导入nutch项目到intellij
配置ivy.xml和conf下的gora.properties、nutch-site.xml
修改ivy/ivy.xml
修改elasticsearch版本
<dependency org="org.elasticsearch" name="elasticsearch" rev="0.90.5" conf="*->default"/>
去掉如下内容注解
<dependency org="org.apache.gora" name="gora-hbase" rev="0.3" conf="*->default" />
修改软件版本，从1.2.15改成1.2.16，解决部分包导入失败问题
<dependency org="log4j" name="log4j" rev="1.2.16" conf="*->master" />
修改gora.properties
注掉如下几行
#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=
添加一行
gora.datastore.default=org.apache.gora.hbase.store.HBaseStore
修改nutch-site.xml，增加如下配置项
<property>
<name>storage.data.store.class</name>
<value>org.apache.gora.hbase.store.HBaseStore</value>
</property>
<property>
<name>http.agent.name</name>
<value>NutchCrawler</value>
</property>
<property>
<name>parser.character.encoding.default</name>
<value>utf-8</value>
</property>
<property>
<name>http.accept.language</name>
<value>ja-jp, en-us, zh-cn,en-gb,en;q=0.7,*;q=0.3</value>
</property>
<property>
<name>generate.batch.id</name>
<value>1</value>
</property>
增加hbase配置文件hbase-site.xml到nutch/conf中
<configuration>
<property>
<name>hbase.rootdir</name>
<value>file:///data/hbase</value>
</property>
<property>
<name>hbase.zookeeper.property.dataDir</name>
<value>/data/zookeeper</value>
</property>
</configuration>
修改nutch/src/bin/nutch，文件开头增加
NUTCH_JAVA_HOME=/usr/local/jdk
修改src下org.apache.nutch.indexer.elastic.ElasticWriter 109行，使支持es0.90.5
item.isFailed()
删除nutch/conf下所有template文件
编译nutch
ant clean
ant runtime
修改nutch-site.xml
<property>
<name>plugin.folders</name>
<value>/home/eryk/workspace/nutch/runtime/local/plugins</value>
</property>
设置intelil，增加nutch/conf和nutch/runtime/lib到classpath
File->Project Structure->Dependencies 增加nutch/conf和nutch/runtime/local/lib目录
增加pom.xml的依赖库
<dependency>
<groupId>net.sourceforge.nekohtml</groupId>
<artifactId>nekohtml</artifactId>
<version>1.9.15</version>
</dependency>
<dependency>
<groupId>org.ccil.cowan.tagsoup</groupId>
<artifactId>tagsoup</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>rome</groupId>
<artifactId>rome</artifactId>
<version>1.0</version>
</dependency>
修改pom.xml中es版本
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>0.90.5</version>
<optional>true</optional>
</dependency>
修正依赖库的版本冲突
<dependency>
<groupId>org.restlet.jse</groupId>
<artifactId>org.restlet.ext.jackson</artifactId>
<version>2.0.5</version>
<exclusions>
<exclusion>
<artifactId>jackson-core-asl</artifactId>
<groupId>org.codehaus.jackson</groupId>
</exclusion>
<exclusion>
<artifactId>jackson-mapper-asl</artifactId>
<groupId>org.codehaus.jackson</groupId>
</exclusion>
</exclusions>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.apache.gora</groupId>
<artifactId>gora-core</artifactId>
<version>0.3</version>
<exclusions>
<exclusion>
<artifactId>jackson-mapper-asl</artifactId>
<groupId>org.codehaus.jackson</groupId>
</exclusion>
</exclusions>
<optional>true</optional>
</dependency>
修改src下org.apache.nutch.crawl.Crawler代码，增加-elasticindex和-batchId参数
Map<String,Object> argMap = ToolUtil.toArgMap(
Nutch.ARG_THREADS, threads,
Nutch.ARG_DEPTH, depth,
Nutch.ARG_TOPN, topN,
Nutch.ARG_SOLR, solrUrl,
ElasticConstants.CLUSTER,elasticSearchAddr, //使用es建立索引
Nutch.ARG_SEEDDIR, seedDir,
Nutch.ARG_NUMTASKS, numTasks,
Nutch.ARG_BATCH,batchId, //解决NullPointerException问题
GeneratorJob.BATCH_ID,batchId); //解决NullPointerException问题，貌似没用
run(argMap);
修改org.apache.nutch.indexer.elastic.ElasticWriter代码，支持-elasticindex ip:port传参
public void open(TaskAttemptContext job) throws IOException {
String clusterName = job.getConfiguration().get(ElasticConstants.CLUSTER);
if (clusterName != null && !clusterName.contains(":")) {
node = nodeBuilder().clusterName(clusterName).client(true).node();
} else {
node = nodeBuilder().client(true).node();
}
LOG.info(String.format("clusterName=[%s]",clusterName));
if(clusterName.contains(":")){
String[] addr = clusterName.split(":");
client = new TransportClient()
.addTransportAddress(new InetSocketTransportAddress(addr[0],Integer.parseInt(addr[1])));
}else{
client = node.client();
}
bulk = client.prepareBulk();
defaultIndex = job.getConfiguration().get(ElasticConstants.INDEX, "index");
maxBulkDocs = job.getConfiguration().getInt(
ElasticConstants.MAX_BULK_DOCS, DEFAULT_MAX_BULK_DOCS);
maxBulkLength = job.getConfiguration().getInt(
ElasticConstants.MAX_BULK_LENGTH, DEFAULT_MAX_BULK_LENGTH);
}
在nutch目录下增加urls目录，在url目录下新建seed.txt，写入要爬的种子地址
运行Crawler
传入参数
urls -elasticindex a2:9300 -threads 10 -depth 3 -topN 5 -batchId 1
观察nutch/hadoop.log日志
2013-11-03 22:57:36,682 INFO elasticsearch.node - [Ikonn] started 2013-11-03 22:57:36,682 INFO elastic.ElasticWriter - clusterName=[a2:9300] 2013-11-03 22:57:36,692 INFO elasticsearch.plugins - [Electron] loaded [], sites [] 2013-11-03 22:57:36,863 INFO basic.BasicIndexingFilter - Maximum title length for indexing set to: 100 2013-11-03 22:57:36,864 INFO indexer.IndexingFilters - Adding org.apache.nutch.indexer.basic.BasicIndexingFilter 2013-11-03 22:57:36,864 INFO anchor.AnchorIndexingFilter - Anchor deduplication is: off 2013-11-03 22:57:36,865 INFO indexer.IndexingFilters - Adding org.apache.nutch.indexer.anchor.AnchorIndexingFilter 2013-11-03 22:57:37,946 INFO elastic.ElasticWriter - Processing remaining requests [docs = 86, length = 130314, total docs = 86] 2013-11-03 22:57:37,988 INFO elastic.ElasticWriter - Processing to finalize last execute 2013-11-03 22:57:41,986 INFO elastic.ElasticWriter - Previous took in ms 1590, including wait 3998 2013-11-03 22:57:42,020 INFO elasticsearch.node - [Ikonn] stopping ... 2013-11-03 22:57:42,032 INFO elasticsearch.node - [Ikonn] stopped 2013-11-03 22:57:42,032 INFO elasticsearch.node - [Ikonn] closing ... 2013-11-03 22:57:42,039 INFO elasticsearch.node - [Ikonn] closed 2013-11-03 22:57:42,041 WARN mapred.FileOutputCommitter - Output path is null in cleanup 2013-11-03 22:57:42,057 INFO elastic.ElasticIndexerJob - Done
查询es
http://a2:9200/_search?q=%E7%BE%8E%E5%A5%B3&pretty=true
返回结果，说明已经跑通了，观察hbase中，表已经自动建好，并存入了已经爬到的数据
参考
http://www.blogjava.net/paulwong/archive/2013/08/31/403513.html
http://my.oschina.net/mynote/blog/152845
http://www.searchtech.pro/nutch2.1-elasticsearch-mysql-local-Integrate
http://blog.csdn.net/laigood/article/details/7625862