我一直在努力了一段時間弄清楚爲什麼包裝後,我得到
java.lang.NoSuchMethodError: scala.Product.$init$(Lscala/Product;)V
斯卡拉的MongoDB:與SBT裝配nosuchmethod錯誤包裝
(根據我做什麼,出現其他錯誤,但他們所有這些似乎都是類路徑問題)
我第一次嘗試獲取所有Mongo jar的最新版本。
我嘗試添加 crossScalaVersions := Seq("2.10.0","2.10.6", "2.12.1")
(之前,我有:scalaVersion := "2.12.1"
)
我試圖把蒙戈罐子lib文件夾中。
我一定要SBT乾淨,然後SBT裝配
不是真的一定要嘗試下什麼,我一直在谷歌上搜索周圍幾個小時,並沒有發現任何幫助呢。 (我試過其他東西,但我不記得那些東西是什麼))
我打開不使用程序集,我只是不確定如何將這些jar添加到沒有它的類路徑。
build.sbt(根目錄):
organization := "com.domain"
name := "ProjectName"
version := "0.1.0-SNAPSHOT"
//scalaVersion := "2.12.1"
crossScalaVersions := Seq("2.10.0","2.10.6", "2.12.1")
//retrieveManaged := true
//resolvers += "spigot-repo" at "https://hub.spigotmc.org/nexus/content/repositories/snapshots/"
libraryDependencies ++= Seq(
"org.mongodb.scala" % "mongo-scala-driver_2.12" % "1.2.1",
"org.mongodb.scala" % "mongo-scala-bson_2.12" % "1.2.1",
"org.mongodb" % "bson" % "3.4.2",
"org.mongodb" % "mongodb-driver-core" % "3.4.2",
"org.mongodb" % "mongodb-driver-async" % "3.4.2"
// "org.spigotmc" % "spigot-api" % "1.11.2-R0.1-SNAPSHOT"
)
//mappings in (Compile, packageBin) <+= baseDirectory map { base =>
// (base/"in"/"plugin.yml") -> "plugin.yml"
//}
問題的來源(private val mongoClient = MongoClient()
每次):
package com.domain.project.package.name
import org.bson.conversions.Bson
import org.mongodb.scala.MongoClient
class MongoWrapper {
// val mongoClientSettings = MongoClientSettings.builder().
// val mongoDriverInfo = MongoDriverInformation.builder().
// val mongoClient: MongoClient = MongoClients.create(settings, mongoDriverInformation)
// private val SERVER = "localhost"
// private val PORT = "27017"
private val DATABASE_NAME = "dbName"
private val mongoClient = MongoClient() //#######ERROR HERE########
val db = mongoClient.getDatabase("dbName")
var collections: Map[String, CollectionWrapper] = Map()
def linkCollection(collectionWrapper: CollectionWrapper) {
collections += collectionWrapper.colName -> collectionWrapper
}
def queueRead(caller: Any, colIn: String, matcher: Bson, func: Any) {
val colOut = collections.get(colIn).get
}
def queueWrite(caller: Any, colIn: String, data: Bson, func: Any) {
val colOut = collections.get(colIn).get
colOut.write(caller, data, func)
}
}
就像我說的,當前錯誤是
java.lang.NoSuchMethodError: scala.Product.$init$(Lscala/Product;)V
或者它也是
java.lang.NoClassDefFoundError: org/mongodb/scala/MongoClient$
我想在一個側面注意到,未註釋時,子插件的依賴性是未解決的,但這不是什麼大問題,我只是把它放在lib文件夾中。另外對於plugin.yml - >它實際上並沒有將它傳遞給jar文件,但這很好 - 我只是解壓縮,放在那裏,然後重新壓縮。
不管怎麼說/到異常(一個或多個)解決方案將不勝感激任何想法,謝謝:)
更新:使用gradle這個現在,但無濟於事遺憾的是:UPDATE
apply plugin: 'java'
apply plugin: 'scala'
repositories {
jcenter()
mavenCentral()
}
jar {
from {
configurations.compile.collect {
it.isDirectory() ? it : zipTree(it)
}
configurations.runtime.collect {
it.isDirectory() ? it : zipTree(it)
}
}
}
dependencies {
compile group: 'org.scala-lang', name: 'scala-library', version: '2.12.1'
compile files('lib/spigot-api-1.11.2-R0.1-SNAPSHOT-shaded.jar')
compile('org.mongodb.scala:mongo-scala-driver_2.11:1.2.1') {
exclude group: 'org.scala-lang'
}
}
buildscript {
dependencies {
classpath fileTree(dir: 'lib', include: '*.jar')
}
}
jar {
from "plugin.yml"
baseName = 'ProjectName'
version = '0.1.0-SNAPSHOT'
}
我得到這個現在:.NoSuchMethodError:scala.Predef $ .augmentString(Ljava /朗/字符串;)Ljava /朗/字符串