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Maven 中的 profile

2021-06-29 16:43:28 更新
  • Maven 中有一个概念叫做:​profile​,它的诞生主要是为了解决不同环境所需的不同变量、配置等问题。
  • 有了 ​profile​,可以根据激活的条件,启动不同条件下的配置信息。
  • profile ​是可以有多个的,也可以同时激活多个 ​profile​,方便自由组合。
  • profile​ 一般可以在三个地方:​settings.xml​,​pom.xml​,​profiles.xml​(这个不常用)
  • 在 ​settings.xml​ 上,一般大家用来做仓库的选择,比如以下​ settings.xml ​代码:
<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
<localRepository>D:\maven\my_local_repository</localRepository>
<pluginGroups>
</pluginGroups>
<proxies>
</proxies>
<profiles>
<profile>
<id>nexus</id>
<repositories>
<repository>
<id>nexus</id>
<url>http://192.168.1.73:8081/repository/maven-public/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>nexus</id>
<url>http://192.168.1.73:8081/repository/maven-public/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
<profile>
<id>aliyun</id>
<repositories>
<repository>
<id>aliyun</id>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>aliyun</id>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>nexus</activeProfile>
</activeProfiles>
</settings>
  • 以上代码中 ​profile​ 就做一件事:设置全局的 ​profile​,一个是 ​nexus ​仓库,一个是 ​aliyun ​仓库,默认激活的是 nexus 仓库。(​activeProfiles​)
  • 在 ​pom.xml ​中,一般用来激活环境配置,比如以下代码:
<profiles>
<profile>
<id>dev</id>
<properties>
<package.environment>dev</package.environment>
</properties>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/env/${package.environment}</directory>
<includes>
<include>**/*</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
<finalName>${project.artifactId}</finalName>
</build>
</profile>
<profile>
<id>product</id>
<properties>
<package.environment>product</package.environment>
</properties>
<activation>
<activeByDefault>false</activeByDefault>
</activation>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/env/${package.environment}</directory>
<includes>
<include>**/*</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
<finalName>${project.artifactId}</finalName>
</build>
</profile>
</profiles>
  • 以上代码中 ​profile ​就做一件事:打包的时候,默认是 ​dev ​模式,打包 ​src/main/env/dev​ 下的配置文件,如果选择 ​product​ 则打包 ​src/main/env/product​ 下的配置文件。