1
我是新手。我正在使用nutch 1.7並完成抓取。 我的問題是如何檢索抓取數據? 在nutch 1.1中有一個名爲org.apache.nutch.searcher的包提供了這個包。 但如果我導入nutch1.1.jar在我的Java應用程序,並嘗試運行舊代碼org.apache.nutch.searcher in nutch 1.7
http://wiki.apache.org/nutch/JavaDemoApplication(可見在此鏈接)
它給了我這個錯誤:
java.lang.VerifyError: class org.apache.nutch.indexer.NutchSimilarity overrides final method lengthNorm.(Ljava/lang/String;I)F
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:792)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.apache.nutch.searcher.LuceneSearchBean.init(LuceneSearchBean.java:84)
at org.apache.nutch.searcher.LuceneSearchBean.<init>(LuceneSearchBean.java:51)
at org.apache.nutch.searcher.NutchBean.<init>(NutchBean.java:103)
at org.apache.nutch.searcher.NutchBean.<init>(NutchBean.java:78)
at MyCrawler.main(MyCrawler.java:57)
有任何想法嗎? 謝謝 Danilo