spark访问ES，HttpConnectionManager找不到的问题

1、导入es-spark依赖

<!-- elasticsearch-spark-20 -->
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch-spark-20_2.11</artifactId>
            <version>7.7.0</version>
        </dependency>
        <!-- elasticsearch -->
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>${
          
   elasticsearch.version}</version>
        </dependency>

val spark: SparkSession = SparkSession.builder()
      .master("local[*]")
      .appName(this.getClass.getSimpleName.filter(!_.equals($)))
      .config("spark.debug.maxToStringFields", 5000)
      .config("spark.serializer", "org.apache.spark.serializer.KryoSerializer")
      .config("es.nodes", "1xx.xxx.xxx.225,1xx.xxx.xxx.226,1xx.xxx.xxx.227")
      .config("es.port", "9200")
      .config("es.index.auto.create", "false")
      //只通过client节点进行读取操作,因此主节点负载会特别高,性能很差。
      // .config("es.nodes.wan.only","true")
      .config("es.mapping.date.rich", "false") //对date不进行转换
      .getOrCreate()
      
    val map = Map("es.mapping.id" -> "id")
    EsSparkSQL.saveToEs(dataFrame, "cell_link_highway_wea", map)

    spark.close()

2、程序运行报错

3、解决办法：

导入以下依赖即可：

<dependency>
            <groupId>commons-httpclient</groupId>
            <artifactId>commons-httpclient</artifactId>
            <version>3.1</version>
        </dependency>