项目构建神器之Gradle

谁借莪１个温暖的怀抱￠ 2023-03-04 08:10 37阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbGlzaGFkYWE_size_16_color_FFFFFF_t_70][]

## **1.前言** ##

在Spring Boot 2.3.0版本之后，官方就将构建工具从Maven转为Gradle，主要的目的是加快项目的构建速度，因此我们这些普通“搬砖党”也不能落后呀，下面将从0开始搭建一个基于Gradle的分模块项目：

## **2.实验环境** ##

<table style="width:500px;"> 
 <tbody> 
  <tr> 
   <td>JDK版本</td> 
   <td>11</td> 
  </tr> 
  <tr> 
   <td>SpringBoot版本</td> 
   <td> <pre><code>2.3.2.RELEASE
</code></pre> </td> 
  </tr> 
  <tr> 
   <td>Gradle版本</td> 
   <td>6.3</td> 
  </tr> 
 </tbody> 
</table>

## 3.详细步骤 ##

首先，需要明确，我们需要创建一个父模块，在这个父模块中又包含：rest，service，dao三个模块。

### 3.1 Step1 ###

创建一个springboot项目，构建方式选择Gradle:

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbGlzaGFkYWE_size_16_color_FFFFFF_t_70 1][]

笔者这里使用了自己下载的Gradle，如果需要你也可以使用官方推荐的Gradle wrapper：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbGlzaGFkYWE_size_16_color_FFFFFF_t_70 2][]

接下来创建各个子模块：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbGlzaGFkYWE_size_16_color_FFFFFF_t_70 3][]

重复上述的步骤依次创建rest、service、dao，当然这个分层还是得按照具体的项目来，这里只是做一个简单的演示仅供参考；最后，不要忘记将一开始创建的src文件夹删除，得到下面的这个结果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbGlzaGFkYWE_size_16_color_FFFFFF_t_70 4][]

### 3.2 Step2 ###

配置外层build.gradle:

buildscript {
        ext {
            springBootVersion = '2.3.2.RELEASE'
        }
        repositories {
            mavenLocal()  
            maven { url = 'http://maven.aliyun.com/nexus/content/groups/public/' }
            jcenter()  
        }
        dependencies {
            classpath "org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}"
        }
    }
    
    allprojects {
        apply plugin: 'java'
        apply plugin: 'idea'
        apply plugin: 'java-library'
        group = 'com.ltx'
        version = '0.0.1-SNAPSHOT'
        sourceCompatibility = 11
        targetCompatibility = 11
    }
    
    
    subprojects {
        apply plugin: 'org.springframework.boot'  
        apply plugin: 'io.spring.dependency-management'  
        
        [compileJava, compileTestJava, javadoc]*.options*.encoding = 'UTF-8'
        repositories {
            mavenLocal()
            maven { url = 'http://maven.aliyun.com/nexus/content/groups/public/' }
            jcenter()
        }
        dependencies{
            compileOnly 'org.projectlombok:lombok:1.18.8'
            annotationProcessor 'org.projectlombok:lombok:1.18.8'
            implementation 'org.codehaus.groovy:groovy'
            testImplementation 'org.springframework.boot:spring-boot-starter-test'
        }
    }

以及settings.gradle，将之前创建的3个模块包含进来：

rootProject.name = 'demo'
    
    include 'dao'
    include 'service'
    include 'rest'

### 3.3 Step3 ###

rest层配置:

buildscript {
        ext { 
            springBootVersion = '2.3.2.RELEASE'
        }
        repositories {
            mavenLocal()   
            maven { url = 'http://maven.aliyun.com/nexus/content/groups/public/' }
            jcenter() 
        }
        apply plugin: 'application'
        mainClassName = 'com.ltx.rest.Application'
        dependencies {
            classpath "org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}" 
        }
    }
    plugins {
        id 'java'
        id 'war'
    }
    apply plugin: 'org.springframework.boot' 
    apply plugin: 'io.spring.dependency-management' 
    sourceCompatibility = '11'
    targetCompatibility = '11'
    repositories {
        mavenLocal()  
        maven { url = 'http://maven.aliyun.com/nexus/content/groups/public/' } 
        jcenter()  
    }
    
    dependencies {
        api (project(':service'))
        implementation 'org.springframework.boot:spring-boot-starter-web'
        testImplementation('org.springframework.boot:spring-boot-starter-test') {
            exclude group: 'org.junit.vintage', module: 'junit-vintage-engine'
        }
    }
    test {
        useJUnitPlatform()
    }

由于这里rest层需要引用service层，顾需要申明相关的依赖：

api (project(':service'))

于此同时，我们需要手动指定一下主启动类：

apply plugin: 'application'
    mainClassName = 'com.ltx.rest.Application'

service、dao层亦如此。

### 3.4 Step4: ###

主启动类如下：

@SpringBootApplication
    @ComponentScan(basePackages = {"com.ltx"})
    public class Application {
    
        public static void main(String[] args) {
            SpringApplication.run(Application.class, args);
        }
    
    }

## 4. 结果 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbGlzaGFkYWE_size_16_color_FFFFFF_t_70 5][]

## 5.项目链接 ##

[链接][Link 1]

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![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbGlzaGFkYWE_size_16_color_FFFFFF_t_70 6][]

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[Link 1]: https://gitee.com/littleWhiteJ/gradle.git
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