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嘗試將Apache Mahout連接到Mongo數據庫。但是,當我運行它時,我得到以下錯誤。不知道什麼是錯的。我也確保MongoClient Library連接。MongoDB和Apache Mahout連接錯誤
錯誤:
java.lang.NoSuchMethodError: com.mongodb.DBCollection.ensureIndex(Lcom/mongodb/DBObject;)V
at org.apache.mahout.cf.taste.impl.model.mongodb.MongoDBDataModel.buildModel(MongoDBDataModel.java:559)
at org.apache.mahout.cf.taste.impl.model.mongodb.MongoDBDataModel.<init>(MongoDBDataModel.java:243)
at util.Connection.connectToServer(Connection.java:23)
方法:
public MongoDatabase connectToServer() throws MongoSocketException, UnknownHostException {
//Working
MongoClientURI uri = new MongoClientURI("mongodb://localhost:27017");
MongoClient mongoDB = new MongoClient(uri);
MongoDatabase mongoConnection = mongoDB.getDatabase("loka");
//Throws Error
MongoDBDataModel dbm = new MongoDBDataModel("127.0.0.1",27017,"loka","BEACON_LOOKUP",true,false,null);
return mongoConnection;
}
POM依賴關係:
<dependency>
<groupId>org.mongodb</groupId>
<artifactId>mongodb-driver</artifactId>
<version>3.0.4</version>
</dependency>
<dependency>
<groupId>org.apache.mahout</groupId>
<artifactId>mahout-core</artifactId>
<version>0.9</version>
</dependency>
<dependency>
<groupId>org.apache.mahout</groupId>
<artifactId>mahout-math</artifactId>
<version>0.12.2</version>
</dependency>
<dependency>
<groupId>org.apache.mahout</groupId>
<artifactId>mahout-collections</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.apache.mahout</groupId>
<artifactId>mahout-integration</artifactId>
<version>0.12.2</version>
</dependency>