[英]Could not set unknown property 'mainClass' for extension 'application
I'm using Gradle version 6.1 in my project.我在我的项目中使用 Gradle 6.1 版。
The build.gradle for the project is given below:该项目的build.gradle如下所示:
plugins {
id 'application'
}
application {
mainClass = 'com.mytestproject.Main'
}
java {
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
}
group 'com.mytestproject'
version '1.0-SNAPSHOT'
repositories {
mavenCentral()
}
dependencies {
testCompile group: 'junit', name: 'junit', version: '4.12'
}
But when I run this command ./gradlew assemble
, it is giving me error given below:但是当我运行这个命令
./gradlew assemble
时,它给了我下面给出的错误:
./gradlew assemble
FAILURE: Build failed with an exception.
* Where:
Build file '/com/myproject/build.gradle' line: 6
* What went wrong:
A problem occurred evaluating root project 'JavaTestProject'.
> Could not set unknown property 'mainClass' for extension 'application' of type org.gradle.api.plugins.internal.DefaultJavaApplication.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 484ms
Modify build.gradle to this:将 build.gradle修改为:
apply plugin: "application"
mainClassName = "com.mytestproject.Main"
sourceCompatibility = 1.8
targetCompatibility = 1.8
group 'com.mytestproject'
version '1.0-SNAPSHOT'
repositories {
mavenCentral()
}
dependencies {
testCompile group: 'junit', name: 'junit', version: '4.12'
}
Run this commmand: ./gradlew build
运行这个命令:
./gradlew build
You could try this (based off the source code ):你可以试试这个(基于源代码):
application {
setMainClassName("some.package.Main")
}
There was a deprecation introduced in 6.4. 6.4 中引入了弃用。 It went from:
它来自:
application {
mainClassName = "com.foo.bar.FooBar"
}
To:至:
application {
mainClass.set("com.foo.bar.FooBar")
}
The Docs:文档:
https://docs.gradle.org/current/javadoc/org/gradle/api/plugins/JavaApplication.html#getMainClassName-- https://docs.gradle.org/current/javadoc/org/gradle/api/plugins/JavaApplication.html#getMainClassName--
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