无法实例化 DynamoDBStoreManager（因为 Apache HTTP 客户端版本不正确？）

Question

当我尝试创建一个连接到（本地）DynamoDB 服务器的 TinkerPop Graph 实例时，我遇到了这个异常：

java.lang.NoSuchMethodError: org.apache.http.conn.ssl.SSLConnectionSocketFactory.<init>(Ljavax/net/ssl/SSLContext;Ljavax/net/ssl/HostnameVerifier;)V

Basic research suggests that the Apache HTTP Client version used is too old (minimum 4.5.2 required)，但我的项目只导入了 dynamodb 工件本身包含的一个版本：

我已经清理了项目，删除了整个 .m2 文件夹并让 Maven 更新项目。我可以检查运行时使用的实际版本吗？还能是什么？

详情

异常的完整堆栈跟踪：

java.lang.IllegalArgumentException: Could not instantiate implementation: com.amazon.titan.diskstorage.dynamodb.DynamoDBStoreManager
    at com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:55)
    at com.thinkaurelius.titan.diskstorage.Backend.getImplementationClass(Backend.java:473)
    at com.thinkaurelius.titan.diskstorage.Backend.getStorageManager(Backend.java:407)
    at com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.<init>(GraphDatabaseConfiguration.java:1320)
    at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:94)
    at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:62)
    ... 11 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:44)
    ... 16 more
Caused by: java.lang.NoSuchMethodError: org.apache.http.conn.ssl.SSLConnectionSocketFactory.<init>(Ljavax/net/ssl/SSLContext;Ljavax/net/ssl/HostnameVerifier;)V
    at com.amazonaws.http.conn.ssl.SdkTLSSocketFactory.<init>(SdkTLSSocketFactory.java:56)
    at com.amazonaws.http.apache.client.impl.ApacheConnectionManagerFactory.getPreferredSocketFactory(ApacheConnectionManagerFactory.java:92)
    at com.amazonaws.http.apache.client.impl.ApacheConnectionManagerFactory.create(ApacheConnectionManagerFactory.java:65)
    at com.amazonaws.http.apache.client.impl.ApacheConnectionManagerFactory.create(ApacheConnectionManagerFactory.java:58)
    at com.amazonaws.http.apache.client.impl.ApacheHttpClientFactory.create(ApacheHttpClientFactory.java:51)
    at com.amazonaws.http.apache.client.impl.ApacheHttpClientFactory.create(ApacheHttpClientFactory.java:39)
    at com.amazonaws.http.AmazonHttpClient.<init>(AmazonHttpClient.java:314)
    at com.amazonaws.http.AmazonHttpClient.<init>(AmazonHttpClient.java:298)
    at com.amazonaws.AmazonWebServiceClient.<init>(AmazonWebServiceClient.java:165)
    at com.amazonaws.AmazonWebServiceClient.<init>(AmazonWebServiceClient.java:154)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.<init>(AmazonDynamoDBClient.java:264)
    at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.<init>(AmazonDynamoDBClient.java:239)
    at com.amazon.titan.diskstorage.dynamodb.DynamoDBDelegate.<init>(DynamoDBDelegate.java:174)
    at com.amazon.titan.diskstorage.dynamodb.Client.<init>(Client.java:145)
    at com.amazon.titan.diskstorage.dynamodb.DynamoDBStoreManager.<init>(DynamoDBStoreManager.java:90)
    ... 21 more

Answer 1

相信奥卡姆剃刀：最简单的答案很可能是正确的。我手动链接了一个 .jar 文件，其中包含旧版本的 Apache HTTP 客户端。现在我摆脱了它。

无法实例化 DynamoDBStoreManager（因为 Apache HTTP 客户端版本不正确？）

Can't instanciate DynamoDBStoreManager (because of incorrect Apache HTTP Client version?)

maven

amazon-dynamodb

apache-httpclient-4.x

titan

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