Nutch run-time error on eclipse

Solrurl is not set, indexing'll be skipped ...
Crawl started In:crwal
Rooturldir = URLs
Threads = 10
Depth = 2
Solrurl=null
TopN = 2
Injector:starting at 2012-04-20 14:39:30
Injector:crawldb:crwal/crawldb
Injector:urlDir:urls
Injector:converting injected URLs to crawl DB entries.
Exception in thread "main" Java.io.IOException:Job failed!
At Org.apache.hadoop.mapred.JobClient.runJob (jobclient.java:1265)
At Org.apache.nutch.crawl.Injector.inject (injector.java:217)
At Org.apache.nutch.crawl.Crawl.run (crawl.java:127)
At Org.apache.hadoop.util.ToolRunner.run (toolrunner.java:65)
At Org.apache.nutch.crawl.Crawl.main (crawl.java:55)

Java.lang.RuntimeException:Error in configuring Object

Atorg.apache.hadoop.util.ReflectionUtils.setJobConf (reflectionutils.java:93)

Atorg.apache.hadoop.util.ReflectionUtils.setConf (reflectionutils.java:64)

Atorg.apache.hadoop.util.ReflectionUtils.newInstance (reflectionutils.java:117)

Atorg.apache.hadoop.mapred.MapTask.runOldMapper (maptask.java:354)

Atorg.apache.hadoop.mapred.MapTask.run (maptask.java:307)

Atorg.apache.hadoop.mapred.localjobrunner$job.run (localjobrunner.java:177)

caused by:java.lang.reflect.InvocationTargetException

ATSUN.REFLECT.NATIVEMETHODACCESSORIMPL.INVOKE0 (Native Method)

Atsun.reflect.NativeMethodAccessorImpl.invoke (Unknown Source)

Atsun.reflect.DelegatingMethodAccessorImpl.invoke (Unknown Source)

Atjava.lang.reflect.Method.invoke (Unknown Source)

Atorg.apache.hadoop.util.ReflectionUtils.setJobConf (reflectionutils.java:88)

... 5 more

caused by:java.lang.RuntimeException:Error in configuring object

Atorg.apache.hadoop.util.ReflectionUtils.setJobConf (reflectionutils.java:93)

Atorg.apache.hadoop.util.ReflectionUtils.setConf (reflectionutils.java:64)

Atorg.apache.hadoop.util.ReflectionUtils.newInstance (reflectionutils.java:117)

Atorg.apache.hadoop.mapred.MapRunner.configure (maprunner.java:34)

... Ten more

caused by:java.lang.reflect.InvocationTargetException

ATSUN.REFLECT.NATIVEMETHODACCESSORIMPL.INVOKE0 (Native Method)

Atsun.reflect.NativeMethodAccessorImpl.invoke (Unknown Source)

Atsun.reflect.DelegatingMethodAccessorImpl.invoke (Unknown Source)

Atjava.lang.reflect.Method.invoke (Unknown Source)

Atorg.apache.hadoop.util.ReflectionUtils.setJobConf (reflectionutils.java:88)

... More

caused by:java.lang.IllegalArgumentException:plugin.folders is not defined

Atorg.apache.nutch.plugin.PluginManifestParser.parsePluginFolder (pluginmanifestparser.java:78)

Atorg.apache.nutch.plugin.pluginrepository.<init> (pluginrepository.java:72)

Atorg.apache.nutch.plugin.PluginRepository.get (pluginrepository.java:99)

Atorg.apache.nutch.net.urlnormalizers.<init> (urlnormalizers.java:117)

Atorg.apache.nutch.crawl.injector$injectmapper.configure (INJECTOR.JAVA:70)

... More

12/04/20 10:14:44 INFOmapred.JobClient:map 0% reduce 0%

12/04/20 10:14:44 INFOmapred.JobClient:Job complete:job_local_0001

12/04/20 10:14:44 infomapred.jobclient:counters:0

Exception in thread "main" Java.io.IOException:Job failed!

Atorg.apache.hadoop.mapred.JobClient.runJob (jobclient.java:1252)

Atorg.apache.nutch.crawl.Injector.inject (injector.java:217)

Atorg.apache.nutch.crawl.Crawl.run (crawl.java:127)

Atorg.apache.hadoop.util.ToolRunner.run (toolrunner.java:65)

Atorg.apache.nutch.crawl.Crawl.main (crawl.java:55)

first of all, don't blame me for so many error messages, just to make it easier for everyone to find here.

to solve this problem is to nutch-default.xml the

<property>
<name>plugin.folders</name>
<value>./src/plugin</value>
<description>directories where Nutch plugins is located. each
Element may be a relative or absolute path. If Absolute, it is used
As is. If relative, it is searched for on the classpath.</description>
</property>

You can change it in red.

Good luck, everyone.

Add the steps to run Nutch on Eclipse for a day before straightened out, but thanks to the students in North north. Ha ha

Http://wiki.apache.org/nutch/RunNutchInEclipse English Authority Office

Prepare for the job

1, install Subeclpse plug-in, install Ivyde plugin, install maven plugin

2. Check out code Https://svn.apache.org/repos/asf/nutch/trunk

3. Delete src and use Src/bin,src/java,src/test,src/testsource,src/plugin/xx/src/java,src/plugin/xx/src/test as folder

4, plus two jar package, see English can understand

5. On the Libraries page, on the right, click Add Class floder to select Nutch conf.

6, or on Libraries page, right click on Add Library > Ivyde Managed Dependencies > select Ivy/ivy.xml

7, build.xml----ant a bit

8, refresh the Nutch project, under the Conf added nutch-site.xml,regex-urlfilter.xml, configuration content

9. Modify in Nutch-default.xml

<property>
<name>plugin.folders</name>
<value>./src/plugin</value>
<description>directories where Nutch plugins is located. each
Element may be a relative or absolute path. If Absolute, it is used
As is. If relative, it is searched for on the classpath.</description>
</property>

Is critical

10, in the root directory to build a folder URLs, folders under the Seed.txt,seed.txt write to crawl page URL

11. Build.xml re-compile (ant)

12. Implementation