架构必修课：使用Bom管理依赖项，告别依赖包版本冲突

dependencies {
  implementation 'org.springframework.boot:spring-boot-starter-web'
  implementation 'javax.cache:cache-api'
  implementation 'jakarta.xml.bind:jakarta.xml.bind-api'
  
  runtimeOnly 'org.springframework.boot:spring-boot-starter-actuator'
  runtimeOnly 'com.h2database:h2'
  runtimeOnly 'org.postgresql:postgresql'

  testImplementation 'org.springframework.boot:spring-boot-starter-test'
}
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public class FutureStub {

    public static Future<String> ofString(String s) {
        doSomethingFunOnPurpose();
        return CompletableFuture.completedFuture(s);
    }

    private static void doSomethingFunOnPurpose() {
        Futures.immediateCheckedFuture(new Object());
    }
}
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public class App {

    public static void main(String[] args) throws Exception {
        final var future = FutureStub.ofString("Hello Maven BOM");
        System.out.println(future.get());
    }
}
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ext {
    // 定义BOM版本
    bomVersion = '1.0.0'

    // 定义依赖项的版本号
    dependencies = [
        'dependency1': '1.2.3',
        'dependency2': '4.5.6',
        // 添加更多依赖项...
    ]
}

// 创建BOM配置
configurations {
    bom
}

// 生成BOM文件
task generateBom {
    outputs.file("dependencies.bom")
    doLast {
        def bomFile = new File(outputs.files.singleFile, "dependencies.bom")
        bomFile.text = configurations.bom.getResolvedConfiguration().getFirstLevelModuleDependencies().collect { dep ->
            "${dep.moduleGroup}:${dep.moduleName}:${dep.moduleVersion}"
        }.join("\n")
    }
}
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apply from: 'dependencies.gradle'
plugins {
    id 'maven-publish'
}

// 发布到Maven仓库
publishing {
    repositories {
        maven {
            url "https://your.maven.repository.url" // 替换为实际的Maven仓库地址
            credentials {
                username 'your-username' // 替换为Maven仓库的用户名
                password 'your-password' // 替换为Maven仓库的密码或API密钥
            }
        }
    }

    publications {
        mavenBom(MavenPublication) {
            artifactId 'your-bom-artifact' // 替换为您的BOM的Artifact ID
            version bomVersion
            groupId 'your.group.id' // 替换为您的BOM的Group ID

            pom.withXml {
                def dependenciesNode = asNode().appendNode('dependencies')
                dependencies.each { depName, depVersion ->
                    def dependencyNode = dependenciesNode.appendNode('dependency')
                    dependencyNode.appendNode('groupId', 'your.dependency.group.id') // 替换为实际的依赖项的Group ID
                    dependencyNode.appendNode('artifactId', depName)
                    dependencyNode.appendNode('version', depVersion)
                }
            }
        }
    }
}

// 发布任务
task publishToMavenRepository {
    dependsOn generateBom
    dependsOn publish
}
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./gradlew publishToMavenRepository
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