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BayanGroup / nutch-custom-search

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Error: Unsupported major.minor version 51.0 #3

Closed pepeabel closed 10 years ago

pepeabel commented 10 years ago

At add plugin in my project and run nuch, i have the next error: java.lang.Exception: java.lang.RuntimeException: Error in configuring object at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:354) Caused by: java.lang.RuntimeException: Error in configuring object at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93) at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64) at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117) at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:426) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:366) at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:223) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88) ... 11 more Caused by: java.lang.RuntimeException: Error in configuring object at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93) at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64) at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117) at org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34) ... 16 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88) ... 19 more Caused by: java.lang.UnsupportedClassVersionError: ir/co/bayan/simorq/zal/extractor/nutch/ExtractorUrlFilter : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at org.apache.nutch.plugin.Extension.getExtensionInstance(Extension.java:154) at org.apache.nutch.net.URLFilters.(URLFilters.java:57) at org.apache.nutch.crawl.Injector$InjectMapper.configure(Injector.java:76) ... 24 more

ali-rokni commented 10 years ago

What is your JRE version? I think you should try to run the code by Java7.
This post might be helpful : http://stackoverflow.com/questions/10382929/unsupported-major-minor-version-51-0

pepeabel commented 10 years ago

Mi version of JRE is the 1.6. All mi project is in 1.6. Then i want recompiling the plugin in the version 1.6, but, the code generate errors.

ali-rokni commented 10 years ago

As I see in pom.xml, maven compiler specifies java 1.7. Have you installed JDK7 on your system or changed the pom.xml?

tahagh commented 10 years ago

Hi,

I plan to change the source to be compatible to 1.6. I think, I will release it today.

On Tue, Apr 29, 2014 at 11:36 PM, Seyed Ali Rokni notifications@github.comwrote:

As I see in pom.xml, maven compiler specifies java 1.7. Have you installed JDK7 on your system or changed the pom.xml?

Reply to this email directly or view it on GitHubhttps://github.com/BayanGroup/nutch-custom-search/issues/3#issuecomment-41725274 .

pepeabel commented 10 years ago

Ok. Thanks Tahagh