maven迁移至gradle kotlin1——Quarkus篇

这里以Quarkus的GET STARTED项目为例，主要此项目使用到了quarkus-universe-bom依赖管理及特殊的编译插件。

准备

先下载项目

mvn io.quarkus:quarkus-maven-plugin:1.13.0.Final:create \
    -DprojectGroupId=org.acme \
    -DprojectArtifactId=getting-started \
    -DclassName="org.acme.getting.started.GreetingResource" \
    -Dpath="/hello"
cd getting-started

迁移

先使用gradle init将maven项目转化为gradle with groovy dsl项目

$ gradle init                                                                 
Found a Maven build. Generate a Gradle build from this? (default: yes) [yes, no] yes


> Task :init
Maven to Gradle conversion is an incubating feature.
Get more help with your project: https://docs.gradle.org/6.5.1/userguide/migrating_from_maven.html

BUILD SUCCESSFUL in 7s
2 actionable tasks: 2 executed

手动操作

Step 1: 把.gradle文件中的单引号换为双引号*

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sed  's/'"'/"'"/g' settings.gradle > settings.gradle.kts
sed  's/'"'/"'"/g' build.gradle > build.gradle.kts
rm -rf settings.gradle build.gradle

Step 2: 修改dependencies依赖添加括号

dependencies {
    implementation("io.quarkus:quarkus-arc:1.13.0.Final")
    implementation("io.quarkus:quarkus-resteasy:1.13.0.Final")
    testImplementation("io.quarkus:quarkus-junit5:1.13.0.Final")
    testImplementation("io.rest-assured:rest-assured:4.3.3")
}

Step 3: 修改plugins

plugins {
    java
    `maven-publish`
}

Step 4: 修改java配置

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java {
    sourceCompatibility = JavaVersion.VERSION_1_8
}

Step 5: 修改JavaCompile任务配置

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tasks.withType<JavaCompile> {
    options.encoding = "UTF-8"
}

Step 6: 修改maven-publish配置

publishing {
    publications {
        create<MavenPublication>("maven") {
            from(components["java"])
        }
    }
}

Step 7: 修改依赖配置

dependencies {
    implementation(enforcedPlatform("io.quarkus:quarkus-universe-bom:1.13.0.Final"))
    implementation("io.quarkus:quarkus-arc")
    implementation("io.quarkus:quarkus-resteasy")
    testImplementation("io.quarkus:quarkus-junit5")
    testImplementation("io.rest-assured:rest-assured")
}

这里使用enforcedPlatform关键字引入bom依赖管理

Step 8: 添加quarkus插件依赖

settings.gradle.kts

pluginManagement {
    repositories {
        mavenLocal()
        mavenCentral()
        gradlePluginPortal()
    }
    plugins {
        id("io.quarkus") version "1.13.0.Final"
    }
}

build.gradle.kts

plugins {
    java
    `maven-publish`
    id("io.quarkus")
}

测试

1	./gradlew quarkusDev

$ http :8080/hello
HTTP/1.1 200 OK
Connection: keep-alive
Content-Length: 14
Content-Type: text/plain;charset=UTF-8
Keep-Alive: timeout=4
Proxy-Connection: keep-alive

Hello RESTEasy

以上，完成。根据Quarkus官方说法，目前gradle的支持不在预期考虑范围内。不建议在生产型工程上使用。