java-maven

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Java Maven Skill

Java Maven 技能

Master Apache Maven for Java project builds and dependency management.

精通Apache Maven，用于Java项目构建与依赖管理。

Overview

概述

This skill covers Maven configuration including POM structure, lifecycle phases, plugin configuration, dependency management with BOMs, and multi-module projects.

本技能涵盖Maven配置，包括POM结构、生命周期阶段、插件配置、使用BOM进行依赖管理以及多模块项目。

When to Use This Skill

何时使用本技能

Use when you need to:

Configure Maven POM files
Manage dependencies with BOMs
Set up build plugins
Create multi-module projects
Troubleshoot build issues

当你需要以下操作时使用：

配置Maven POM文件
使用BOM管理依赖
设置构建插件
创建多模块项目
排查构建问题

Quick Reference

快速参考

xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>my-app</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <properties>
        <java.version>21</java.version>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <maven.compiler.target>${java.version}</maven.compiler.target>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>3.2.1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-enforcer-plugin</artifactId>
                <version>3.4.1</version>
            </plugin>
        </plugins>
    </build>
</project>

xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>my-app</artifactId>
    <version>1.0.0-SNAPSHOT</version>

    <properties>
        <java.version>21</java.version>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <maven.compiler.target>${java.version}</maven.compiler.target>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>3.2.1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-enforcer-plugin</artifactId>
                <version>3.4.1</version>
            </plugin>
        </plugins>
    </build>
</project>

Lifecycle Phases

生命周期阶段

validate → compile → test → package → verify → install → deploy

validate → compile → test → package → verify → install → deploy

Useful Commands

实用命令

bash

mvn dependency:tree                    # View dependencies
mvn dependency:analyze                 # Find unused/undeclared
mvn versions:display-dependency-updates  # Check updates
mvn help:effective-pom                 # View effective POM
mvn -B verify                          # Batch mode build

bash

mvn dependency:tree                    # 查看依赖
mvn dependency:analyze                 # 查找未使用/未声明的依赖
mvn versions:display-dependency-updates  # 检查更新
mvn help:effective-pom                 # 查看有效POM
mvn -B verify                          # 批量模式构建

Troubleshooting

故障排查

Problem	Solution
Dependency not found	Check repository, version
Version conflict	Use BOM or enforcer
Build OOM	Set MAVEN_OPTS=-Xmx1g

问题	解决方案
依赖未找到	检查仓库、版本
版本冲突	使用BOM或enforcer插件
构建内存溢出	设置MAVEN_OPTS=-Xmx1g

Usage

使用方法

Skill("java-maven")

Skill("java-maven")