使用java代码删除nexus maven仓库中的jar包和pom.xml等组件

pom.xml

<?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>com.nihaorz</groupId>
    <artifactId>nexus-component-manager</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <!--指定Java版本-->
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.konghq</groupId>
            <artifactId>unirest-java</artifactId>
            <version>3.7.02</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.6</version>
        </dependency>
    </dependencies>

</project>

Component.java

package com.nihaorz.common;

import lombok.Data;

import java.util.ArrayList;
import java.util.List;

/**
 * Maven组件
 */
@Data
public class Component implements Comparable<Component> {

    private String id;

    private String repository;

    private String group;

    private String name;

    private String version;

    private String format;

    private List<Asset> assets = new ArrayList<>();

    @Override
    public int compareTo(Component o) {
        return this.version.compareTo(o.getVersion());
    }
}

Asset.java

package com.nihaorz.common;

import lombok.Data;

@Data
public class Asset {

    private String id;

    private String repository;

    private String path;

    private String downloadUrl;

    private Checksum checksum;

    private String format;

}

Checksum.java

package com.nihaorz.common;

import lombok.Data;

@Data
public class Checksum {

    private String sha1;

    private String md5;

}

NexusComponentManager.java 程序入口

package com.nihaorz;

import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.reflect.TypeToken;
import com.nihaorz.common.Component;
import kong.unirest.HttpResponse;
import kong.unirest.Unirest;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * nexus组件管理，目前主要用来实现SNAPSHOT组件自动删除，在 Nexus Repository Manager OSS 3.9.0-01 版本测试通过
 */
public class NexusComponentManager {

    /**
     * nexus访问地址
     */
    private static final String NEXUS_URL = "http://192.168.100.154:8081";

    /**
     * nexus账号
     */
    private static final String NEXUS_USERNAME = "admin";

    /**
     * nexus密码
     */
    private static final String NEXUS_PASSWORD = "admin123";

    /**
     * 成功删除的组件数量
     */
    private static int successDeleteTotal;

    /**
     * 根据仓库名称、groupId和artifactId搜索组件并删除，保留最后一个版本
     *
     * @param args
     */
    public static void main(String[] args) {
        long start1 = System.currentTimeMillis();
        List<Component> list = search("geostack-snapshots", "geostack", "arcgis-service");
        if (list.size() > 1) {
            Collections.sort(list);
            list.remove(list.size() - 1);
            System.out.println(String.format("本次合计将删除%d个组件", list.size()));
            for (int i = 0; i < list.size(); i++) {
                Component component = list.get(i);
                long start2 = System.currentTimeMillis();
                delete(component);
                long end2 = System.currentTimeMillis();
                System.out.println(String.format("[%d/%d] 删除%s仓库中的组件【%s-%s-%s】耗时%d毫秒", i + 1, list.size(), component.getRepository(), component.getGroup(), component.getName(), component.getVersion(), end2 - start2));
            }
            long end1 = System.currentTimeMillis();
            System.out.println(String.format("成功删除%d个组件，总计耗时：%d毫秒", successDeleteTotal, end1 - start1));
        } else {
            System.out.println(String.format("本次查询匹配的组件数量为%d个，不做删除", list.size()));
        }
    }

    /**
     * 删除组件
     *
     * @param component 组件对象
     */
    public static void delete(Component component) {
        String url = String.format("%s/service/rest/beta/components/%s", NEXUS_URL, component.getId());
        HttpResponse response = Unirest.delete(url).basicAuth(NEXUS_USERNAME, NEXUS_PASSWORD).asEmpty();
        int status = response.getStatus();
        if (status == 204) {
            successDeleteTotal++;
        } else {
            System.out.println(String.format("组件【%s-%s-%s】删除失败，http响应代码：%d", component.getRepository(), component.getGroup(), component.getName(), component.getVersion(), status));
        }
    }

    /**
     * 搜索组件
     *
     * @param repository 仓库名称
     * @param groupId    maven中的groupId
     * @param artifactId maven中的artifactId
     * @return
     */
    public static List<Component> search(String repository, String groupId, String artifactId) {
        final List<Component> list = new ArrayList<>();
        search(repository, groupId, artifactId, list, null);
        return list;
    }

    /**
     * 搜索组件
     * <p>
     * 搜索组件时API会对匹配结果进行分页，所以这里采用递归搜索
     *
     * @param repository 仓库名称
     * @param groupId    maven中的groupId
     * @param artifactId maven中的artifactId
     * @param list       存放查询结果的集合
     * @param token      token，由上一页查询结果中获取，第一次查询传null
     */
    private static void search(String repository, String groupId, String artifactId, List<Component> list, String token) {
        String url = String.format("%s/service/rest/beta/search?repository=%s&maven.groupId=%s&maven.artifactId=%s", NEXUS_URL, repository, groupId, artifactId);
        if (token != null) {
            url += "&continuationToken=" + token;
        }
        HttpResponse<String> response = Unirest.get(url).basicAuth(NEXUS_USERNAME, NEXUS_PASSWORD).asString();
        if (response.getStatus() == 200) {
            JsonObject jsonObject = JsonParser.parseString(response.getBody()).getAsJsonObject();
            List<Component> temp = new Gson().fromJson(jsonObject.getAsJsonArray("items"), new TypeToken<List<Component>>() {
            }.getType());
            list.addAll(temp);
            if (!jsonObject.get("continuationToken").isJsonNull()) {
                token = jsonObject.get("continuationToken").getAsString();
                search(repository, groupId, artifactId, list, token);
            }
        } else {
            System.out.println(String.format("组件搜索出错，http响应代码：%d，错误信息：%s", response.getStatus(), response.getStatusText()));
        }
    }

}