不支持的身份验证令牌，scheme='none' 仅在禁用身份验证时才允许：{ scheme='none'} - Neo4j 身份验证错误

Question

我正在尝试使用 neo4j-spark-connector 从 Spark 连接到 Neo4j。当我尝试连接到 Neo4j 时遇到身份验证问题org.neo4j.driver.v1.exceptions.AuthenticationException: Unsupported authentication token, scheme='none' only allowed when auth is disabled: { scheme='none' }

我已经检查过并且我传递的凭据是正确的。不知道为什么会失败。

import org.neo4j.spark._
import org.apache.spark._
import org.graphframes._
import org.apache.spark.sql.SparkSession
import org.neo4j.driver.v1.GraphDatabase
import org.neo4j.driver.v1.AuthTokens

val config = new SparkConf()

config.set(Neo4jConfig.prefix + "url", "bolt://localhost")
config.set(Neo4jConfig.prefix + "user", "neo4j")
config.set(Neo4jConfig.prefix + "password", "root")

val sparkSession :SparkSession = SparkSession.builder.config(config).getOrCreate()

val neo = Neo4j(sparkSession.sparkContext)

val graphFrame = neo.pattern(("Person","id"),("KNOWS","null"), ("Employee","id")).partitions(3).rows(1000).loadGraphFrame


println("**********Graphframe Vertices Count************")
graphFrame.vertices.count

println("**********Graphframe Edges Count************")
graphFrame.edges.count


val pageRankFrame = graphFrame.pageRank.maxIter(5).run()
val ranked = pageRankFrame.vertices
ranked.printSchema()

val top3 = ranked.orderBy(ranked.col("pagerank").desc).take(3)

有人可以看看，让我知道同样的原因吗？

Answer 1

这可能是您的 neo4j.conf 文件的配置问题。这行是否被注释掉了：

dbms.security.auth_enabled=false