Exception in thread “main“ java.lang.NoClassDefFoundError: javax/servlet/Servlet-Toy模板网

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记录一次Spark提交错误

源程序

import org.apache.spark.sql.SparkSession

import scala.io.Source

object SparkClear {


  def main(args: Array[String]): Unit = {

    val spark =SparkSession.builder().appName("SparkClear").master( "local[*]").getOrCreate()

    val symbolicList=Source.fromFile("D:\\IDEA\\科大讯飞大数据培训\\bigdataproject\\src\\main\\resources\\symbolic.txt").getLines().toList

    val stopWordList=Source.fromFile("D:\\IDEA\\科大讯飞大数据培训\\bigdataproject\\src\\main\\resources\\stopwords.txt").getLines().toList

    import spark.implicits._

    val file=spark.read.options(Map(("delimiter","|"),("header","false")))
      .csv("D:\\IDEA\\科大讯飞大数据培训\\bigdataproject\\src\\main\\resources\\wordcount").toDF("no","content")

    val ds=file.select("content").as[String]
    ds.show()

    ds.flatMap(_.split(" "))
      .map(_.toLowerCase)
      .filter(!stopWordList.contains(_))
      .filter(!symbolicList.contains(_))
      .groupBy("value")
      .count()
      .orderBy($"count"desc)
      .show(50)
    spark.stop()
  }

}

错误

D:\jdk1.8\bin\java.exe "-javaagent:D:\IDEA\2021.2.3\ideaIU-2021.3\IntelliJ IDEA 2021.3\lib\idea_rt.jar=53469:D:\IDEA\2021.2.3\ideaIU-2021.3\IntelliJ IDEA 2021.3\bin" -Dfile.encoding=UTF-8 -classpath D:\jdk1.8\jre\lib\charsets.jar;D:\jdk1.8\jre\lib\deploy.jar;D:\jdk1.8\jre\lib\ext\access-bridge-64.jar;D:\jdk1.8\jre\lib\ext\cldrdata.jar;D:\jdk1.8\jre\lib\ext\dnsns.jar;D:\jdk1.8\jre\lib\ext\jaccess.jar;D:\jdk1.8\jre\lib\ext\jfxrt.jar;D:\jdk1.8\jre\lib\ext\localedata.jar;D:\jdk1.8\jre\lib\ext\nashorn.jar;D:\jdk1.8\jre\lib\ext\sunec.jar;D:\jdk1.8\jre\lib\ext\sunjce_provider.jar;D:\jdk1.8\jre\lib\ext\sunmscapi.jar;D:\jdk1.8\jre\lib\ext\sunpkcs11.jar;D:\jdk1.8\jre\lib\ext\zipfs.jar;D:\jdk1.8\jre\lib\javaws.jar;D:\jdk1.8\jre\lib\jce.jar;D:\jdk1.8\jre\lib\jfr.jar;D:\jdk1.8\jre\lib\jfxswt.jar;D:\jdk1.8\jre\lib\jsse.jar;D:\jdk1.8\jre\lib\management-agent.jar;D:\jdk1.8\jre\lib\plugin.jar;D:\jdk1.8\jre\lib\resources.jar;D:\jdk1.8\jre\lib\rt.jar;D:\IDEA\科大讯飞大数据培训\bigdataproject\target\classes;C:\Users\蒋欢\.m2\repository\org\scala-lang\scala-library\2.11.8\scala-library-2.11.8.jar;C:\Users\蒋欢\.m2\repository\org\scala-lang\scala-reflect\2.11.8\scala-reflect-2.11.8.jar;D:\localRepository\org\springframework\spring-context\5.2.8.RELEASE\spring-context-5.2.8.RELEASE.jar;D:\localRepository\org\springframework\spring-aop\5.2.8.RELEASE\spring-aop-5.2.8.RELEASE.jar;D:\localRepository\org\springframework\spring-beans\5.2.8.RELEASE\spring-beans-5.2.8.RELEASE.jar;D:\localRepository\org\springframework\spring-core\5.2.8.RELEASE\spring-core-5.2.8.RELEASE.jar;D:\localRepository\org\springframework\spring-jcl\5.2.8.RELEASE\spring-jcl-5.2.8.RELEASE.jar;D:\localRepository\org\springframework\spring-expression\5.2.8.RELEASE\spring-expression-5.2.8.RELEASE.jar;D:\localRepository\org\aspectj\aspectjweaver\1.8.7\aspectjweaver-1.8.7.jar;D:\localRepository\taglibs\standard\1.1.2\standard-1.1.2.jar;D:\localRepository\org\springframework\spring-jdbc\5.2.8.RELEASE\spring-jdbc-5.2.8.RELEASE.jar;D:\localRepository\org\springframework\spring-tx\5.2.8.RELEASE\spring-tx-5.2.8.RELEASE.jar;D:\localRepository\org\springframework\spring-test\5.2.8.RELEASE\spring-test-5.2.8.RELEASE.jar;D:\localRepository\org\mybatis\mybatis\3.5.5\mybatis-3.5.5.jar;D:\localRepository\org\mybatis\mybatis-spring\2.0.5\mybatis-spring-2.0.5.jar;D:\localRepository\mysql\mysql-connector-java\5.1.6\mysql-connector-java-5.1.6.jar;D:\localRepository\commons-logging\commons-logging\1.2\commons-logging-1.2.jar;D:\localRepository\commons-dbcp\commons-dbcp\1.4\commons-dbcp-1.4.jar;D:\localRepository\commons-pool\commons-pool\1.5.4\commons-pool-1.5.4.jar;D:\localRepository\log4j\log4j\1.2.17\log4j-1.2.17.jar;D:\localRepository\org\springframework\spring-web\5.2.8.RELEASE\spring-web-5.2.8.RELEASE.jar;D:\localRepository\org\springframework\spring-webmvc\5.2.8.RELEASE\spring-webmvc-5.2.8.RELEASE.jar;D:\localRepository\org\hibernate\hibernate-validator\5.4.3.Final\hibernate-validator-5.4.3.Final.jar;D:\localRepository\javax\validation\validation-api\1.1.0.Final\validation-api-1.1.0.Final.jar;D:\localRepository\org\jboss\logging\jboss-logging\3.3.0.Final\jboss-logging-3.3.0.Final.jar;D:\localRepository\com\fasterxml\classmate\1.3.1\classmate-1.3.1.jar;D:\localRepository\com\alibaba\fastjson\1.2.73\fastjson-1.2.73.jar;D:\localRepository\com\fasterxml\jackson\core\jackson-core\2.9.0\jackson-core-2.9.0.jar;D:\localRepository\com\fasterxml\jackson\core\jackson-databind\2.9.0\jackson-databind-2.9.0.jar;D:\localRepository\com\fasterxml\jackson\core\jackson-annotations\2.9.0\jackson-annotations-2.9.0.jar;D:\localRepository\org\apache\spark\spark-core_2.11\2.1.3\spark-core_2.11-2.1.3.jar;D:\localRepository\org\apache\avro\avro-mapred\1.7.7\avro-mapred-1.7.7-hadoop2.jar;D:\localRepository\org\apache\avro\avro-ipc\1.7.7\avro-ipc-1.7.7.jar;D:\localRepository\org\apache\avro\avro\1.7.7\avro-1.7.7.jar;D:\localRepository\org\apache\avro\avro-ipc\1.7.7\avro-ipc-1.7.7-tests.jar;D:\localRepository\org\codehaus\jackson\jackson-core-asl\1.9.13\jackson-core-asl-1.9.13.jar;D:\localRepository\org\codehaus\jackson\jackson-mapper-asl\1.9.13\jackson-mapper-asl-1.9.13.jar;D:\localRepository\com\twitter\chill_2.11\0.8.0\chill_2.11-0.8.0.jar;D:\localRepository\com\esotericsoftware\kryo-shaded\3.0.3\kryo-shaded-3.0.3.jar;D:\localRepository\com\esotericsoftware\minlog\1.3.0\minlog-1.3.0.jar;D:\localRepository\org\objenesis\objenesis\2.1\objenesis-2.1.jar;D:\localRepository\com\twitter\chill-java\0.8.0\chill-java-0.8.0.jar;D:\localRepository\org\apache\xbean\xbean-asm5-shaded\4.4\xbean-asm5-shaded-4.4.jar;D:\localRepository\org\apache\hadoop\hadoop-client\2.2.0\hadoop-client-2.2.0.jar;D:\localRepository\org\apache\hadoop\hadoop-common\2.2.0\hadoop-common-2.2.0.jar;D:\localRepository\commons-cli\commons-cli\1.2\commons-cli-1.2.jar;D:\localRepository\org\apache\commons\commons-math\2.1\commons-math-2.1.jar;D:\localRepository\xmlenc\xmlenc\0.52\xmlenc-0.52.jar;D:\localRepository\commons-lang\commons-lang\2.5\commons-lang-2.5.jar;D:\localRepository\commons-configuration\commons-configuration\1.6\commons-configuration-1.6.jar;D:\localRepository\commons-digester\commons-digester\1.8\commons-digester-1.8.jar;D:\localRepository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SparkClear
Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties
22/07/29 12:01:32 INFO SparkContext: Running Spark version 2.1.3
22/07/29 12:01:33 INFO SecurityManager: Changing view acls to: FleChazo
22/07/29 12:01:33 INFO SecurityManager: Changing modify acls to: FleChazo
22/07/29 12:01:33 INFO SecurityManager: Changing view acls groups to: 
22/07/29 12:01:33 INFO SecurityManager: Changing modify acls groups to: 
22/07/29 12:01:33 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled; users  with view permissions: Set(FleChazo); groups with view permissions: Set(); users  with modify permissions: Set(FleChazo); groups with modify permissions: Set()
22/07/29 12:01:33 INFO Utils: Successfully started service 'sparkDriver' on port 53509.
22/07/29 12:01:33 INFO SparkEnv: Registering MapOutputTracker
22/07/29 12:01:33 INFO SparkEnv: Registering BlockManagerMaster
22/07/29 12:01:33 INFO BlockManagerMasterEndpoint: Using org.apache.spark.storage.DefaultTopologyMapper for getting topology information
22/07/29 12:01:33 INFO BlockManagerMasterEndpoint: BlockManagerMasterEndpoint up
22/07/29 12:01:33 INFO DiskBlockManager: Created local directory at D:\temp\blockmgr-d16bb832-5199-4b21-96c4-1bfc349cd02b
22/07/29 12:01:34 INFO MemoryStore: MemoryStore started with capacity 1982.4 MB
22/07/29 12:01:34 INFO SparkEnv: Registering OutputCommitCoordinator
Exception in thread "main" java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet
	at org.apache.spark.ui.WebUI.attachPage(WebUI.scala:81)
	at org.apache.spark.ui.WebUI$$anonfun$attachTab$1.apply(WebUI.scala:65)
	at org.apache.spark.ui.WebUI$$anonfun$attachTab$1.apply(WebUI.scala:65)
	at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
	at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
	at org.apache.spark.ui.WebUI.attachTab(WebUI.scala:65)
	at org.apache.spark.ui.SparkUI.initialize(SparkUI.scala:66)
	at org.apache.spark.ui.SparkUI.<init>(SparkUI.scala:82)
	at org.apache.spark.ui.SparkUI$.create(SparkUI.scala:220)
	at org.apache.spark.ui.SparkUI$.createLiveUI(SparkUI.scala:162)
	at org.apache.spark.SparkContext.<init>(SparkContext.scala:452)
	at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2323)
	at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:868)
	at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:860)
	at scala.Option.getOrElse(Option.scala:121)
	at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:860)
	at SparkClear$.main(SparkClear.scala:10)
	at SparkClear.main(SparkClear.scala)
Caused by: java.lang.ClassNotFoundException: javax.servlet.http.HttpServlet
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	... 18 more
22/07/29 12:01:34 INFO DiskBlockManager: Shutdown hook called
22/07/29 12:01:34 INFO ShutdownHookManager: Shutdown hook called
22/07/29 12:01:34 INFO ShutdownHookManager: Deleting directory D:\temp\spark-42a06475-3a36-485b-9791-26949831afe6\userFiles-a2c6dcdb-a347-4532-a3b3-7ae2367e1a46
22/07/29 12:01:34 INFO ShutdownHookManager: Deleting directory D:\temp\spark-42a06475-3a36-485b-9791-26949831afe6

Process finished with exit code 1

原因

缺少jar包
jar包冲突

解决方法

先查看pom文件中是否引入了对应的依赖，如果没有的话，需要引入：

<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>javax.servlet-api</artifactId>
  <version>3.1.0</version>
</dependency>

特别注意！！！

如果是从Maven Repository上面获取的依赖记得要删除<scop>这一行，我就是网上找了几百种方法，才发现是这个问题！文章来源地址https://www.toymoban.com/news/detail-536454.html

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