Gradle构建SpringBoot多模块项目

Gradle官方介绍是Build Anything, Automate Everything,Deliver Faster,即构建任何项目，自动化，构建快。

​Gradle VS Maven

这是官方跟Maven构建的比较视频

可以明显看到Gradle速度快，显示内容也比较清爽

项目实例

IDEA创建初始项目

so easy..

copy 两个项目，目录结构是这样,这里用1-5标识Gradle配置文件

配置文件详解

1. settings.gradle

/**
 * rootProject.name 项目名称
 * include 模块名称
 */
rootProject.name = 'micro-service-framework'
include 'framework-base'
include 'framework-web'
include 'framework-redis'

2. build.gradle
这个相当于maven中的父maven配置

buildscript {
    ext {
        //spring boot 版本
        bootVersion = '2.0.6.RELEASE'
    }
 
    //私服地址，这个地址适用于gradle自身，比如删除，下面的springboot插件就会找不到
    repositories {
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
    }
 
    //springboot gradle插件配置
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${bootVersion}")
    }
}
 
 
allprojects {
    //导入使用的插件
    apply plugin: 'java'
    apply plugin: 'maven'
    //如果导入该插件，你需要指定main class，否则不能打包
    //apply plugin: 'org.springframework.boot'
    apply plugin: 'io.spring.dependency-management'
    //这个插件用于发布jar包到私服
    apply plugin: 'maven-publish'
 
    //jdk编译版本
    sourceCompatibility = 1.8
 
    //jar包的group ，version配置
    group 'net.178le.micro'
    version '0.0.1-SNAPSHOT'
 
    //私服地址，
    repositories {
        maven { url 'http://maven.aliyun.com/nexus/content/groups/public/' }
    }
 
    /**
     * 导入了springboot,spring cloud的pom文件，能够免去自己管理版本
     * PS: 在Spring官网指导上面有另外一种配置，那种配置需要配置main class，一会说明
     */
    dependencyManagement {
        imports {
            mavenBom "org.springframework.boot:spring-boot-starter-parent:${bootVersion}"
            mavenBom "org.springframework.cloud:spring-cloud-dependencies:Finchley.SR2"
        }
    }
 
 
    //私服发布配置
    publishing {
        publications {
            maven(MavenPublication) {
                //指定group/artifact/version信息，可以不填。默认使用项目group/name/version作为groupId/artifactId/version
                groupId = project.group
                artifactId = project.name
                version = project.version
                //如果是war包填写components.web，如果是jar包填写components.java
                from components.java
 
                //配置上传源码
                artifact sourceJar {
                    classifier "src"
                }
 
            }
        }
        repositories {
            maven {
                def releasesUrl = "http://你的私服ip:8081/repository/maven-releases/"
                def snapshotsUrl = "http://你的私服ip:8081/repository/maven-snapshots/"
                url = version.endsWith('SNAPSHOT') ? snapshotsUrl : releasesUrl
                credentials {
                    username = 'admin'
                    password = 'admin123'
                }
            }
        }
    }
 
}
 
//这里的配置对子项目生效
subprojects {
 
    dependencies {
        testCompile("org.springframework.boot:spring-boot-starter-test")
        compile("com.google.guava:guava:28.0-jre")
    }
}
 
//打包源码
task sourceJar(type: Jar) {
    from sourceSets.main.allJava
}
 

maven publish使用
在task -> publishing 中有如下几个命令

我认为使用这两个命令就足够了
publishMavenPublicationToMavenLocal 发布项目到本地仓库
publishMavenPublicationToMavenRepository 发布项目到私服

PS：使用apply plugin: 'org.springframework.boot' build必须要指定main class

23:26:17: Executing task 'build'...
 
> Task :framework-base:compileJava NO-SOURCE
> Task :framework-base:processResources NO-SOURCE
> Task :framework-base:classes UP-TO-DATE
> Task :framework-base:jar SKIPPED
> Task :framework-redis:compileJava UP-TO-DATE
> Task :framework-redis:processResources NO-SOURCE
> Task :framework-redis:classes UP-TO-DATE
> Task :framework-redis:jar SKIPPED
> Task :framework-web:compileJava UP-TO-DATE
> Task :framework-web:processResources NO-SOURCE
> Task :framework-web:classes UP-TO-DATE
> Task :framework-web:bootJar FAILED
 
FAILURE: Build failed with an exception.
 
* What went wrong:
Execution failed for task ':framework-web:bootJar'.
> Main class name has not been configured and it could not be resolved
 
* 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
 
Deprecated Gradle features were used in this build, making it incompatible with Gradle 5.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/4.10.3/userguide/command_line_interface.html#sec:command_line_warnings
 
BUILD FAILED in 1s
3 actionable tasks: 1 executed, 2 up-to-date
Main class name has not been configured and it could not be resolved
23:26:18: Task execution finished 'build'.
 

framework-web 项目 3. build.gradle

dependencies {
    //依赖framework-redis项目
    compile project(':framework-redis')
 
    //不需要写版本
    compile('org.springframework.boot:spring-boot-starter-web')
    //不需要写版本
    compile('org.springframework.cloud:spring-cloud-starter-openfeign')
 
}

framework-redis 项目 4. build.gradle

dependencies {
    //依赖framework-base
    compile project(':framework-base')
    compile('org.springframework.boot:spring-boot-starter-data-redis')
}

framework-base 5. build.gradle

//做为演示没有引入任何jar包
dependencies {
}