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我在關注Kinesis Streams上的http://docs.aws.amazon.com/streams/latest/dev/learning-kinesis-module-one.html教程。AWS Kinesis客戶端因java.lang.NoClassDefFoundError失敗
我已經創建了兩個包，一個是生產者，另一個是消費者。我可以正確生成數據，並且我可以從指標儀表板看到數據正在進入數據流。
當我跑我的客戶，我得到了下面的堆棧跟蹤：
1246 [main] DEBUG com.amazonaws.services.kinesis.samples.stocktrades.processor.StockTradesProcessor - Caught throwable while processing data.
java.lang.NoClassDefFoundError: com/amazonaws/util/json/JSONObject
at com.amazonaws.services.kinesis.leases.impl.Lease.toString(Lease.java:229)
at java.lang.String.valueOf(Unknown Source)
at java.lang.StringBuilder.append(Unknown Source)
at com.amazonaws.services.kinesis.leases.impl.LeaseManager.createLeaseIfNotExists(LeaseManager.java:281)
at com.amazonaws.services.kinesis.clientlibrary.lib.worker.ShardSyncer.syncShardLeases(ShardSyncer.java:127)
at com.amazonaws.services.kinesis.clientlibrary.lib.worker.ShardSyncer.checkAndCreateLeasesForNewShards(ShardSyncer.java:88)
at com.amazonaws.services.kinesis.clientlibrary.lib.worker.ShardSyncTask.call(ShardSyncTask.java:68)
at com.amazonaws.services.kinesis.clientlibrary.lib.worker.MetricsCollectingTaskDecorator.call(MetricsCollectingTaskDecorator.java:49)
at com.amazonaws.services.kinesis.clientlibrary.lib.worker.Worker.initialize(Worker.java:395)
at com.amazonaws.services.kinesis.clientlibrary.lib.worker.Worker.run(Worker.java:330)
at com.amazonaws.services.kinesis.samples.stocktrades.processor.StockTradesProcessor.main(StockTradesProcessor.java:102)
Caused by: java.lang.ClassNotFoundException: com.amazonaws.util.json.JSONObject
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 11 more
這看起來像是類路徑的問題。你有包含'com.amazonaws.util.json.JSONObject'的jar，並且你已經驗證它在你的類路徑中嗎？你如何啓動你的消費者？ – Krease