java.lang.NoClassDefFoundError：org.slf4j.LoggerFactory

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运行Feed实用程序时，我收到如下所述的错误。我正在尝试加载图片 logo.png 。运行时类路径中也提供了 slf4j jar文件。但我仍然得到这个错误。

I am getting the error as mentioned below, while running the feed utility. I am trying to load an image "logo.png". The slf4j jar file is also available in the runtime classpath. But still I am getting this error.

Oct 16, 2012 7:34:11 PM com.ibmmerce.foundation.dataload.FeedRetriever invokeDataLoad SEVERE: An error occurred while performing data load. Throwable occurred: com.ibmmerce.foundation.dataload.exception.DataLoadException: An error occurred while executing the data load. java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory at com.ibmmerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:664) at com.ibmmerce.contentmands.DataLoadInvoker.execute(DataLoadInvoker.java:101) at com.ibmmerce.foundation.dataload.FeedRetriever.invokeDataLoad(FeedRetriever.java:244) at com.ibmmerce.foundation.dataload.FeedRetriever.execute(FeedRetriever.java:172) at com.ibmmerce.foundation.dataload.FeedRetriever.main(FeedRetriever.java:321) Caused by: java.lang.RuntimeException: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory at com.ibmmerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:488) ... 4 more Caused by: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory at org.apache.wink.client.ClientConfig.<clinit>(ClientConfig.java:52) at java.lang.J9VMInternals.initializeImpl(Native Method) at java.lang.J9VMInternals.initialize(J9VMInternals.java:200) at java.lang.J9VMInternals.initialize(J9VMInternals.java:167) at com.ibmmerce.foundation.dataload.feedreader.AtomReader.getFeed(AtomReader.java:104) at com.ibmmerce.foundation.dataload.feedreader.AtomReader.getEntries(AtomReader.java:147) at com.ibmmerce.foundation.dataload.feedreader.AtomReader.getEntries(AtomReader.java:1) at com.ibmmerce.foundation.dataload.feedreader.BaseFeedReader.init(BaseFeedReader.java:252) at com.ibmmerce.foundation.dataload.AbstractBusinessObjectLoader.initializeDataReaders(AbstractBusinessObjectLoader.java:1344) at com.ibmmerce.foundation.dataload.AbstractBusinessObjectLoader.init(AbstractBusinessObjectLoader.java:369) at com.ibmmerce.foundation.dataload.BusinessObjectLoader.init(BusinessObjectLoader.java:65) at com.ibmmerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:431) ... 4 more Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at java.lang.ClassNotFoundException.<init>(ClassNotFoundException.java:76) at java.URLClassLoader.findClass(URLClassLoader.java:396) at java.lang.ClassLoader.loadClass(ClassLoader.java:660) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:358) at java.lang.ClassLoader.loadClass(ClassLoader.java:626) ... 16 more Oct 16, 2012 7:34:11 PM com.ibmmerce.foundation.dataload.FeedRetriever main SEVERE: An error occurred while performing data load. Throwable occurred: com.ibmmerce.foundation.dataload.exception.DataLoadException: An error has occurred. If this problem persists, contact product support. at com.ibmmerce.foundation.dataload.FeedRetriever.invokeDataLoad(FeedRetriever.java:247) at com.ibmmerce.foundation.dataload.FeedRetriever.execute(FeedRetriever.java:172) at com.ibmmerce.foundation.dataload.FeedRetriever.main(FeedRetriever.java:321)

推荐答案

您必须在类路径中提供各种SLF4J实现.jar文件之一，以及接口.jar文件。这是记录在案的。

You have to provide one of the various SLF4J implementation .jar files in the classpath, as well as the interface .jar file. This is documented.