实现自定义任务

gradle-project
├── app
│   ├── build.gradle.kts    // app build logic
│   ├── run.sh              // script file
│   └── ...                 // some java code
├── settings.gradle.kts     // includes app subproject
├── gradle
├── gradlew
└── gradlew.bat

gradle-project
├── app
│   ├── build.gradle    // app build logic
│   ├── run.sh          // script file
│   └── ...             // some java code
├── settings.gradle     // includes app subproject
├── gradle
├── gradlew
└── gradlew.bat

tasks.register<Zip>("packageApp") {

}

tasks.register(Zip, "packageApp") {

}

val packageApp = tasks.register<Zip>("packageApp") {
    from(layout.projectDirectory.file("run.sh"))                // input - run.sh file
    from(tasks.jar) {                                           // input - jar task output
        into("libs")
    }
    from(configurations.runtimeClasspath) {                     // input - jar of dependencies
        into("libs")
    }
    destinationDirectory.set(layout.buildDirectory.dir("dist")) // output - location of the zip file
    archiveFileName.set("myApplication.zip")                    // output - name of the zip file
}

def packageApp = tasks.register(Zip, 'packageApp') {
    from layout.projectDirectory.file('run.sh')                 // input - run.sh file
    from tasks.jar {                                            // input - jar task output
        into 'libs'
    }
    from configurations.runtimeClasspath {                      // input - jar of dependencies
        into 'libs'
    }
    destinationDirectory.set(layout.buildDirectory.dir('dist')) // output - location of the zip file
    archiveFileName.set('myApplication.zip')                    // output - name of the zip file
}

tasks.build {
    dependsOn(packageApp)
}

tasks.build {
    dependsOn(packageApp)
}

gradle-project
├── app
│   ├── build.gradle.kts
│   └── src                 // some java code
│       └── ...
├── buildSrc
│   ├── build.gradle.kts
│   ├── settings.gradle.kts
│   └── src                 // common build logic
│       └── ...
├── settings.gradle.kts
├── gradle
├── gradlew
└── gradlew.bat

gradle-project
├── app
│   ├── build.gradle
│   └── src             // some java code
│       └── ...
├── buildSrc
│   ├── build.gradle
│   ├── settings.gradle
│   └── src             // common build logic
│       └── ...
├── settings.gradle
├── gradle
├── gradlew
└── gradlew.bat

import org.gradle.api.DefaultTask

public abstract class GenerateReportTask : DefaultTask() {

}

import org.gradle.api.DefaultTask

public abstract class GenerateReportTask extends DefaultTask {

}

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.InputDirectory

public abstract class GenerateReportTask : DefaultTask() {

    @get:InputDirectory
    lateinit var sourceDirectory: File

}

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.InputDirectory

public abstract class GenerateReportTask extends DefaultTask {

    @InputDirectory
    File sourceDirectory

}

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.InputDirectory
import org.gradle.api.tasks.OutputFile

public abstract class GenerateReportTask : DefaultTask() {

    @get:InputDirectory
    lateinit var sourceDirectory: File

    @get:OutputFile
    lateinit var reportFile: File

}

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.InputDirectory
import org.gradle.api.tasks.OutputFile

public abstract class GenerateReportTask extends DefaultTask {

    @InputDirectory
    File sourceDirectory

    @OutputFile
    File reportFile

}

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.InputDirectory
import org.gradle.api.tasks.OutputFile
import org.gradle.api.tasks.TaskAction

public abstract class GenerateReportTask : DefaultTask() {

    @get:InputDirectory
    lateinit var sourceDirectory: File

    @get:OutputFile
    lateinit var reportFile: File

    @TaskAction
    fun generateReport() {
        val fileCount = sourceDirectory.listFiles().count { it.isFile }
        val directoryCount = sourceDirectory.listFiles().count { it.isDirectory }

        val reportContent = """
            |Report for directory: ${sourceDirectory.absolutePath}
            |------------------------------
            |Number of files: $fileCount
            |Number of subdirectories: $directoryCount
        """.trimMargin()

        reportFile.writeText(reportContent)
        println("Report generated at: ${reportFile.absolutePath}")
    }
}

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.InputDirectory
import org.gradle.api.tasks.OutputFile
import org.gradle.api.tasks.TaskAction

public abstract class GenerateReportTask extends DefaultTask {

    @InputDirectory
    File sourceDirectory

    @OutputFile
    File reportFile

    @TaskAction
    void generateReport() {
        def fileCount = sourceDirectory.listFiles().count { it.isFile() }
        def directoryCount = sourceDirectory.listFiles().count { it.isDirectory() }

        def reportContent = """
            Report for directory: ${sourceDirectory.absolutePath}
            ------------------------------
            Number of files: $fileCount
            Number of subdirectories: $directoryCount
        """.trim()

        reportFile.text = reportContent
        println("Report generated at: ${reportFile.absolutePath}")
    }
}

tasks.register<GenerateReportTask>("generateReport") {
    sourceDirectory = file("src/main")
    reportFile = file("${layout.buildDirectory}/reports/directoryReport.txt")
}

tasks.build {
    dependsOn("generateReport")
}

import org.gradle.api.tasks.Copy

tasks.register(GenerateReportTask, "generateReport") {
    sourceDirectory = file("src/main")
    reportFile = file("${layout.buildDirectory}/reports/directoryReport.txt")
}

tasks.build.dependsOn("generateReport")

plugins {
    id("my-convention-plugin")
}

version = "1.0"

application {
    mainClass = "org.example.app.App"
}

plugins {
    id 'my-convention-plugin'
}

version = '1.0'

application {
    mainClass = 'org.example.app.App'
}

import org.gradle.api.DefaultTask
import org.gradle.api.provider.Property
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.TaskAction

abstract class PrintVersion : DefaultTask() {

    // Configuration code
    @get:Input
    abstract val version: Property<String>

    // Execution code
    @TaskAction
    fun print() {
        println("Version: ${version.get()}")
    }
}

import org.gradle.api.DefaultTask
import org.gradle.api.provider.Property
import org.gradle.api.tasks.Input
import org.gradle.api.tasks.TaskAction

abstract class PrintVersion extends DefaultTask {

    // Configuration code
    @Input
    abstract Property<String> getVersion()

    // Execution code
    @TaskAction
    void printVersion() {
        println("Version: ${getVersion().get()}")
    }
}

tasks.register<PrintVersion>("printVersion") {

    // Configuration code
    version = project.version as String
}

tasks.register(PrintVersion, "printVersion") {

    // Configuration code
    version = project.version.toString()
}

tasks.register("printVersionDynamic") {

}

tasks.register("printVersionDynamic") {

}

tasks.register("printVersionDynamic") {
    doFirst {
        // Task action = Execution code
        // Run before exiting actions
    }
    doLast {
        // Task action = Execution code
        // Run after existing actions
    }
}

tasks.register("printVersionDynamic") {
    doFirst {
        // Task action = Execution code
        // Run before exiting actions
    }
    doLast {
        // Task action = Execution code
        // Run after existing actions
    }
}

tasks.register("printVersionDynamic") {
    inputs.property("version", project.version.toString())
    doLast {
        println("Version: ${inputs.properties["version"]}")
    }
}

tasks.register("printVersionDynamic") {
    inputs.property("version", project.version)
    doLast {
        println("Version: ${inputs.properties["version"]}")
    }
}

tasks.compileJava {
    // Clear existing actions
    actions.clear()

    // Add a new action
    doLast {
        println("Custom action: Compiling Java classes...")
    }
}

tasks.compileJava {
    // Clear existing actions
    actions.clear()

    // Add a new action
    doLast {
        println("Custom action: Compiling Java classes...")
    }
}

tasks.compileJava {
    // Modify the task behavior
    doLast {
        val outputDir = File("$buildDir/compiledClasses")
        outputDir.mkdirs()

        val compiledFiles = sourceSets["main"].output.files
        compiledFiles.forEach { compiledFile ->
            val destinationFile = File(outputDir, compiledFile.name)
            compiledFile.copyTo(destinationFile, true)
        }

        println("Java compilation completed. Compiled classes copied to: ${outputDir.absolutePath}")
    }
}

tasks.compileJava {
    // Modify the task behavior
    doLast {
        def outputDir = file("$buildDir/compiledClasses")
        outputDir.mkdirs()

        def compiledFiles = sourceSets["main"].output.files
        compiledFiles.each { compiledFile ->
            def destinationFile = new File(outputDir, compiledFile.name)
            compiledFile.copyTo(destinationFile)
        }

        println("Java compilation completed. Compiled classes copied to: ${outputDir.absolutePath}")
    }
}