我正在尝试使用IntelliJ IDEA从Kotlin应用程序构建jar,一切都可以在IntelliJ中运行Kotlin文件与main
方法,但是使用gradle jar
构建jar后,我遇到了以下错误:
java -cp build/libs/sensorPreprocessor-1.0-SNAPSHOT.jar co.myapp.sensorPreprocessor.MqttPollerKt
Error: Could not find or load main class co.myapp.sensorPreprocessor.MqttPollerKt
我的build.gradle
文件是这样的:
plugins {
id 'org.jetbrains.kotlin.jvm' version '1.3.31'
id "com.commercehub.gradle.plugin.avro" version '0.16.0'
}
apply plugin: 'kotlin'
apply plugin: 'application'
mainClassName = 'co.myapp.sensorPreprocessor.MqttPollerKt'
group 'co.myapp'
version '1.0-SNAPSHOT'
repositories {
mavenCentral()
jcenter()
maven {
url "https://dl.bintray.com/cbeust/maven"
}
maven {
url "http://packages.confluent.io/maven/"
}
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
compile "org.jetbrains.kotlin:kotlin-reflect:1.3.31"
testCompile group: 'junit', name: 'junit', version: '4.12'
compile group: 'org.apache.kafka', name: 'kafka-streams', version: '2.2.0'
compile group: 'com.igormaznitsa', name: 'jbbp', version: '1.4.1'
compile group: 'software.amazon.awssdk', name: 'sqs', version: '2.5.45'
compile group: 'com.amazonaws', name: 'aws-iot-device-sdk-java', version: '1.3.0'
compile group: 'com.amazonaws', name: 'aws-iot-device-sdk-java-samples', version: '1.3.0'
compile group: 'com.beust', name: 'klaxon', version: '5.0.5'
compile group: 'org.apache.kafka', name: 'kafka-clients', version: '2.2.0'
compile group: 'io.confluent', name: 'kafka-avro-serializer', version: '5.2.1'
compile group: 'io.confluent', name: 'kafka-streams-avro-serde', version: '5.2.1'
compile group: 'io.confluent', name: 'monitoring-interceptors', version: '5.2.1'
compile group: 'org.apache.avro', name: 'avro', version: '1.9.0'
}
compileKotlin {
kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {
kotlinOptions.jvmTarget = "1.8"
}
jar {
manifest {
attributes 'Main-Class': 'co.myapp.sensorPreprocessor.MqttPollerKt'
}
from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
}
我的主文件是这个:
package co.myapp.sensorPreprocessor
import software.amazon.awssdk.services.sqs.model.Message as AwsSqsMessage
....
class MqttPoller {
companion object {
@JvmStatic fun main(args: Array<String>) {
start()
}
fun start() {
...
}
}
}
class MessagesTopic(topic: String, qos: AWSIotQos, private val kafkaProducer: KafkaProducer<String, SensorData>) : AWSIotTopic(topic, qos) {
override fun onMessage(message: AWSIotMessage?) {
....
}
}
fun main() {
MqttPoller.start()
}
我已经尝试过相同结果的 co.myapp.sensorPreprocessor.MqttPollerKt
和 co.myapp.sensorPreprocessor.MqttPoller
。
如果在我输入java -cp JAR_PATH <tab>
后尝试自动完成,我可以看到它会自动完成我的类名,但仍然不起作用。
如果我尝试使用javap
,它也会显示类:
➜ iot-services-sensor-preprocessor git:(master) ✗ javap -cp build/libs/sensorPreprocessor-1.0-SNAPSHOT.jar co.myapp.sensorPreprocessor.MqttPollerKt
Compiled from "MqttPoller.kt"
public final class co.myapp.sensorPreprocessor.MqttPollerKt {
public static final void main();
public static void main(java.lang.String[]);
}
➜ iot-services-sensor-preprocessor git:(master) ✗ javap -verbose -cp build/libs/sensorPreprocessor-1.0-SNAPSHOT.jar co.myapp.sensorPreprocessor.MqttPollerKt
Classfile jar:file:///Users/alex/Projects/myapp/build/libs/sensorPreprocessor-1.0-SNAPSHOT.jar!/co/myapp/sensorPreprocessor/MqttPollerKt.class
Last modified May 21, 2019; size 754 bytes
MD5 checksum 52febc7a2f38ef786ded2198193827b3
Compiled from "MqttPoller.kt"
public final class co.myapp.sensorPreprocessor.MqttPollerKt
minor version: 0
major version: 52
flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
this_class: #2 // co/myapp/sensorPreprocessor/MqttPollerKt
super_class: #4 // java/lang/Object
interfaces: 0, fields: 0, methods: 2, attributes: 2
Constant pool:
#1 = Utf8 co/myapp/sensorPreprocessor/MqttPollerKt
#2 = Class #1 // co/myapp/sensorPreprocessor/MqttPollerKt
#3 = Utf8 java/lang/Object
#4 = Class #3 // java/lang/Object
#5 = Utf8 main
#6 = Utf8 ()V
#7 = Utf8 ([Ljava/lang/String;)V
#8 = NameAndType #5:#6 // main:()V
#9 = Methodref #2.#8 // co/myapp/sensorPreprocessor/MqttPollerKt.main:()V
#10 = Utf8 co/myapp/sensorPreprocessor/MqttPoller
#11 = Class #10 // co/myapp/sensorPreprocessor/MqttPoller
#12 = Utf8 Companion
#13 = Utf8 Lco/myapp/sensorPreprocessor/MqttPoller$Companion;
#14 = NameAndType #12:#13 // Companion:Lco/myapp/sensorPreprocessor/MqttPoller$Companion;
#15 = Fieldref #11.#14 // co/myapp/sensorPreprocessor/MqttPoller.Companion:Lco/myapp/sensorPreprocessor/MqttPoller$Companion;
#16 = Utf8 co/myapp/sensorPreprocessor/MqttPoller$Companion
#17 = Class #16 // co/myapp/sensorPreprocessor/MqttPoller$Companion
#18 = Utf8 start
#19 = NameAndType #18:#6 // start:()V
#20 = Methodref #17.#19 // co/myapp/sensorPreprocessor/MqttPoller$Companion.start:()V
#21 = Utf8 Lkotlin/Metadata;
#22 = Utf8 mv
#23 = Integer 1
#24 = Integer 15
#25 = Utf8 bv
#26 = Integer 0
#27 = Integer 3
#28 = Utf8 k
#29 = Integer 2
#30 = Utf8 d1
#31 = Utf8 \u0000\b\n\u0000\n\u0002\u0010\u0002\n\u0000\u001a\u0006\u0010\u0000\u001a\u00020\u0001¨\u0006\u0002
#32 = Utf8 d2
#33 = Utf8
#34 = Utf8 sensorPreprocessor
#35 = Utf8 MqttPoller.kt
#36 = Utf8 Code
#37 = Utf8 LineNumberTable
#38 = Utf8 SourceFile
#39 = Utf8 RuntimeVisibleAnnotations
{
public static final void main();
descriptor: ()V
flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
Code:
stack=1, locals=0, args_size=0
0: getstatic #15 // Field co/myapp/sensorPreprocessor/MqttPoller.Companion:Lco/myapp/sensorPreprocessor/MqttPoller$Companion;
3: invokevirtual #20 // Method co/myapp/sensorPreprocessor/MqttPoller$Companion.start:()V
6: return
LineNumberTable:
line 78: 0
line 79: 6
public static void main(java.lang.String[]);
descriptor: ([Ljava/lang/String;)V
flags: (0x1009) ACC_PUBLIC, ACC_STATIC, ACC_SYNTHETIC
Code:
stack=0, locals=1, args_size=1
0: invokestatic #9 // Method main:()V
3: return
}
SourceFile: "MqttPoller.kt"
RuntimeVisibleAnnotations:
0: #21(#22=[I#23,I#23,I#24],#25=[I#23,I#26,I#27],#28=I#29,#30=[s#31],#32=[s#5,s#33,s#34])
kotlin.Metadata(
mv=[1,1,15]
bv=[1,0,3]
k=2
d1=["\u0000\b\n\u0000\n\u0002\u0010\u0002\n\u0000\u001a\u0006\u0010\u0000\u001a\u00020\u0001¨\u0006\u0002"]
d2=["main","","sensorPreprocessor"]
)
org.jetbrains.kotlin.jvm
插件负责gradle集成。 - alex88