使用groovy 下载maven依赖包

主要集成了groovy的grape

maven 依赖

注意groovy的grape需要依赖apache ivy

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"

         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

 

    <groupId>org.example</groupId>

    <artifactId>mylocal-test</artifactId>

    <version>1.0-SNAPSHOT</version>

 

    <properties>

        <maven.compiler.source>11</maven.compiler.source>

        <maven.compiler.target>11</maven.compiler.target>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.codehaus.groovy</groupId>

            <artifactId>groovy</artifactId>

            <version>3.0.8</version>

        </dependency>

        <dependency>

            <groupId>org.apache.ivy</groupId>

            <artifactId>ivy</artifactId>

            <version>2.5.0</version>

        </dependency>

    </dependencies>

 

</project>

参考代码

private static void demoapp() {

        System.setProperty("grape.root", ".");

        Grape.setEnableAutoDownload(true);

        Grape.setEnableAutoDownload(true);

        Map<String, Object> param = new HashMap<>();

        GroovyClassLoader classLoader = new GroovyClassLoader();

        param.put("classLoader", classLoader); // 注意需要指定classloader

        param.put("group", "com.fasterxml.jackson.core");

        param.put("module", "jackson-databind"); // module 就是maven 的artifactId

        param.put("version", "2.12.5");

        // no need to download transitive dependencies as we only need to check the component itself

        param.put("validate", false);

        param.put("transitive", true);

        Grape.grab(param);

        Arrays.stream(Grape.listDependencies(classLoader)).forEach(new Consumer<Map>() {

            @Override

            public void accept(Map map) {

                System.out.println(map.toString());

            }

        });

}

效果

参考资料

http://docs.groovy-lang.org/latest/html/documentation/grape.html