Gradle installation and use of maven repository configuration

One, Gradle installation

1. Installation prerequisites

Installation environment : jdk8 and above

2. Installation steps

Gradle version installed this time: gradle-5.6

• 1. Download the
  download address of Gradle's official website: https://gradle.org/releases/ , download and select according to your needs.
  
  Directory structure after decompression:
  
• 2. Copy the decompressed directory path, for example: D:\Program Files\gradle\gradle-5.6
  
• 3. Configure system environment variables:
  
  edit path and create a new %GRADLE_HOME5.6%\bin
  
  4. Verify installation
  Open cmd and enter the verification command: gradle -vorgradle -version
  

Two, use maven warehouse configuration

1. Reasons for configuring and using maven local warehouse :

Reduce the need to re-download the jar package that already exists in the local maven warehouse when Gradle is built, thus saving time and space.

2. Configuration method

2-1. Add a new system variable in the environment variable: GRADLE_USER_HOME, the variable value is the path of the maven local warehouse, this article is an example: D:\Program Files\maven\apache-maven-3.6.1\repository

2-2. Add the configuration to load the jar globally, in the init.d directory under the gradle installation directory.

allprojects {
    
    
    repositories {
    
    
        maven {
    
     url 'file:///D:/Program Files/maven/apache-maven-3.6.1/repository'}
        mavenLocal()
        maven {
    
     name "Alibaba" ; url "http://maven.aliyun.com/nexus/content/groups/public/" }
        mavenCentral()
		google()
		jcenter()
    }

    buildscript {
    
     
        repositories {
    
     
            maven {
    
     name "Alibaba" ; url 'http://maven.aliyun.com/nexus/content/groups/public/' }
        }
    }
}

2-3. Project settings. Need to modify the build.gradle file to add mavenLocal() to reference the local warehouse

repositories {
    
         //repositories闭包
　　mavenLocal()   //配置先从本地仓库寻找jar包，优先寻找上一个配置，找到不执行下面的配置
　　mavenCentral() //配置从中央仓库寻找
　　google()       //第三方仓库
　　jcenter()      //代码托管库：设置之后可以在项目中轻松引用jcenter上的开源项目
}

Three, configure gradle in IDEA

First, you need to import the project in the idea (it can be an empty folder), select the import project construction method as: Gradle

and then set the gradle

and the configuration is complete.