Spark cassandra 连接器 Java API，找不到符号 CassandraRow

Question

我正在尝试此处的 spark-cassandra-connector-japi 示例：

https://github.com/datastax/spark-cassandra-connector/blob/master/doc/7_java_api.md

maven 构建失败并出现以下错误：

SimpleApp.java:[24,9] cannot find symbol [ERROR] symbol: class CassandraRow [ERROR] location: class SimpleApp

我的pom.xml如下图

<project>
  <groupId>com.example</groupId>
  <artifactId>simple-project</artifactId>
  <modelVersion>4.0.0</modelVersion>
  <name>Simple Project</name>
  <packaging>jar</packaging>
  <version>1.0</version>
  <dependencies>
    <dependency> <!-- Spark dependency -->
      <groupId>org.apache.spark</groupId>
      <artifactId>spark-core_2.10</artifactId>
      <version>1.5.2</version>
    </dependency>
    <dependency>
        <groupId>com.datastax.spark</groupId>
        <artifactId>spark-cassandra-connector_2.10</artifactId>
        <version>1.5.0-M3</version>
    </dependency>
    <dependency>
        <groupId>com.datastax.spark</groupId>
        <artifactId>spark-cassandra-connector-java_2.10</artifactId>
        <version>1.5.0-M3</version>
    </dependency>
    <dependency>
        <groupId>com.datastax.cassandra</groupId>
        <artifactId>cassandra-driver-core</artifactId>
        <version>2.1.9</version>
    </dependency>
    <dependency>
        <groupId>com.datastax.cassandra</groupId>
        <artifactId>cassandra-driver-mapping</artifactId>
        <version>2.1.9</version>
    </dependency>
  </dependencies>
</project>

class CassandraRow 在哪里定义的？我已经查看了包 com.datastax.spark.connector.japi.CassandraJavaUtil 中的代码，但它没有在那里定义。该示例要求仅静态导入 com.datastax.spark.connector.japi 以使示例正常工作。

任何指点将不胜感激。

Answer 1

你可以让它工作 import com.datastax.spark.connector.CassandraRow;

我使用的依赖项与您相同（无论版本如何）

<dependency>
  <groupId>com.datastax.spark</groupId>
  <artifactId>spark-cassandra-connector-java_2.10</artifactId>
  <version>1.5.0-M2</version>
</dependency>

Spark cassandra 连接器 Java API，找不到符号 CassandraRow

Spark cassandra connector Java API, cannot find symbol CassandraRow

java

spark-cassandra-connector