1.新建Gradle項目：

2.建立src/main/groovy目錄，並添加如下代碼：

ConfigPlugin.groovy

package com.wemall.config

import org.gradle.api.Plugin
import org.gradle.api.Project

class ConfigPlugin implements Plugin<Project> {

    void apply(Project project) {
        project.extensions.create("configPluginExtension", ConfigPluginExtension)
        project.task(
 
"configTask", type: ConfigTask)
    }
}

ConfigTask.groovy

package com.wemall.config

import org.gradle.api.DefaultTask
import org.gradle.api.tasks.TaskAction

import groovy.swing.impl.DefaultAction
import groovy.xml.Namespace
import groovy.xml.StreamingDOMBuilder

class ConfigTask extends DefaultTask {
    
    
 
static final String CONFIG_CENTER_URL = "http://192.168.127.137:8080/config-center-0.0.1-SNAPSHOT/";

    @TaskAction
    void download() {
    
        def names = project.configPluginExtension.name;
        def version = project.configPluginExtension.version;
        
        names.each { name -> 
            
            def inputStream 
 
= new URL(CONFIG_CENTER_URL + name).openStream();
            
            println ("${project.projectDir} , ${project.buildDir}, ${project.rootDir}, ${project.resources}");
            
            def file = new File("${project.projectDir}/src/main/resources/${name}");
            file.withOutputStream { 
                outputStream -> 
                    outputStream << inputStream;
            }
        }
    }
    
}

ConfigPluginExtension.groovy

package com.wemall.config

class ConfigPluginExtension {

    def name = [];
    def version = "";
}

3.在src/main/resources下建立MEAT-INFO/gradle-plugins目錄，並添加com.wemall.config.properties配置文件

com.wemall.config.properties內容,這個properties文件的名稱，就為自定義Gradle插件名稱.

implementation-class=com.wemall.config.ConfigPlugin

4.build.gradle文件內容:

apply plugin: ‘groovy‘
apply plugin: ‘maven‘
apply plugin: ‘maven-publish‘

dependencies {
    compile gradleApi()
    compile localGroovy()
}


group=‘com.wemall.config‘
version=‘1.0.7-SNAPSHOT‘

publishing {
    publications {
        maven(MavenPublication) {
            groupId project.group
            artifactId project.name
            version project.version
            //若是war包，就寫components.web,若是jar包，就寫components.java
            from components.java
        }
    }
    repositories {
        maven {
    
            if (project.version.endsWith(‘-SNAPSHOT‘)) {
                url = "http://192.168.184.155:8081/repository/maven-snapshots/"
            } else {
                url = "http://192.168.184.155:8081/repository/maven-releases/"
            }
    
            credentials {
                username ‘admin‘
                password ‘admin123‘
            }
        }
        }
    }

5.發布接入到nexus倉庫中:

6.其他gradle項目引入插件：

buildscript {
    repositories {
        maven {
            url ‘http://192.168.184.155:8081/repository/maven-public/‘
        }
    }
    
    dependencies {
        classpath group: ‘com.wemall.config‘,name: ‘config-plugin‘,version: ‘1.0.7-SNAPSHOT‘
    }
}

plugins {
    id ‘java-library‘
}

apply plugin: ‘com.wemall.config‘

dependencies {
    testImplementation ‘junit:junit:4.12‘
}

configPluginExtension {
    name = ["a.properties", "b.properties", "c.properties"]
    version = "1.0.0-SNAPSHOT"
}

7.在引入插件的項目中運行插件:

gradlew -q configTask

此時configTask插件就可以連接到網址的配置中上下載配置文件。configTask名稱為ConfigPlugin.groovy文件中的project.task("configTask", type: ConfigTask)字符串名稱。

gradle 自定義插件 下載配置文件