我正在用apache flink编写流媒体服务。我基本上是使用org.apache.flink.table.sources.csvtablesource从csv文件中挑选数据。以下是相同的代码：

StreamTableEnvironment streamTableEnvironment = TableEnvironment
                .getTableEnvironment(streamExecutionEnvironment);

    CsvTableSource csvTableSource = CsvTableSource.builder().path(pathToCsvFile)
            .field("XXX0", Types.SQL_TIMESTAMP).field("XXX1", Types.INT)
            .field("XXX2", Types.DECIMAL).field("XXX3", Types.INT).field("XXX4", Types.INT)
            .field("XXX9", Types.DECIMAL).field("XXX5", Types.STRING)
            .field("XXX6", Types.STRING).field("XXX7", Types.STRING).fieldDelimiter(",").lineDelimiter("\n")
            .ignoreFirstLine().ignoreParseErrors().build();

    streamTableEnvironment.registerTableSource("metrics_table", csvTableSource);

    Table selectedMetricTable = streamTableEnvironment.sqlQuery(getSQLQuery(metricsType, metricsGroupingLevel));

    DataStream<Tuple2<Boolean, MetricsTimeSeriesData>> metricStream = streamTableEnvironment
            .toRetractStream(selectedMetricTable, MetricsTimeSeriesData.class);

但它给出了以下错误：

Caused by: java.lang.ClassNotFoundException: org.apache.flink.table.sources.TableSource

以下是maven依赖项：

<dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-java</artifactId>
            <version>1.4.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-java_2.11</artifactId>
            <version>1.4.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-clients_2.11</artifactId>
            <version>1.4.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-table_2.11</artifactId>
            <version>1.4.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-scala_2.11</artifactId>
            <version>1.4.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.flink</groupId>
            <artifactId>flink-streaming-scala_2.11</artifactId>
            <version>1.4.0</version>
        </dependency>

我可以看到上述类的源定义，但我仍然得到这个错误。请帮忙？