在 Gradle Spring 引导项目中，如何声明依赖项仅在运行本地使用？

Question

我有一个 Spring 使用 Gradle 构建的连接到数据库的引导应用程序。当运行在本地连接时，在内存数据库中运行通常更方便（在本例中，h2），而不是连接到数据库的真实实例。为此，应用程序声明了一个自定义 BootRun 任务，用于运行在本地应用程序。如何确保 h2 依赖项在本地运行ning 时可用，但不包含在生成的 Spring 引导 jar 中？

文件：

build.gradle

import org.springframework.boot.gradle.tasks.run.BootRun

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:2.0.5.RELEASE")
    }
}

plugins {
    id 'java'
    id 'org.springframework.boot' version '2.1.1.RELEASE'
    id "io.spring.dependency-management" version "1.0.6.RELEASE"
}

group 'test'
version '1.0-SNAPSHOT'
sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    compile "org.springframework.boot:spring-boot-starter-web"
    compile "org.springframework.boot:spring-boot-starter-jdbc"

    // compile "..." // Dependency for the real, non-in memory, database goes here

    compile "com.h2database:h2" // How can I make sure this isn't included in the resulting jar?
}

task bootRunLocal(type: BootRun, group: ApplicationPlugin.APPLICATION_GROUP, dependsOn: classes) {
    main = 'test.BootApplication'
    classpath = sourceSets.main.runtimeClasspath

    systemProperty "spring.profiles.active", "local-db-h2"
}

application.yml

spring:
  datasource:
    # Default and non-in-memory datasource configuration goes here
---
spring:
  profiles: local-db-h2
  datasource.url: jdbc:h2:mem:testdb;MODE=Oracle
  datasource.platform: h2_local

test/BootApplication.java

package test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.jdbc.core.JdbcTemplate;

@SpringBootApplication
public class BootApplication implements CommandLineRunner {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    public static void main(String[] args) {
        SpringApplication.run(BootApplication.class, args);
    }

    @Override
    public void run(String... args) {
        jdbcTemplate.query("SELECT 1", row -> {});
    }
}

Answer 1

我目前实施的解决方案使用 custom Gradle configuration 作为 h2 依赖项。

build.gradle

configurations {
    localDatabase
}

dependencies {
    compile "org.springframework.boot:spring-boot-starter-web"
    compile "org.springframework.boot:spring-boot-starter-jdbc"

    // compile "..." // Dependency for the real, non-in memory, database

    localDatabase 'com.h2database:h2'
}

task bootRunLocal(type: BootRun, group: ApplicationPlugin.APPLICATION_GROUP, dependsOn: classes) {
    main = 'test.BootApplication'
    classpath = sourceSets.main.runtimeClasspath + configurations.localDatabase

    systemProperty "spring.profiles.active", "local-db-h2"
}

在 Gradle Spring 引导项目中，如何声明依赖项仅在运行本地使用？

In a Gradle Spring Boot project, how can I declare dependencies to only be used when running locally?

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文件：

build.gradle

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In a Gradle Spring Boot project, how can I declare dependencies to only be used when running locally?

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文件：

build.gradle

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在 Gradle Spring 引导项目中，如何声明依赖项仅在运行本地使用？