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    <profiles>
        <profile>
            <!--不同环境Profile的唯一id-->
            <id>dev</id>
            <properties>
                <!--profiles.active是自定义的字段； 在build-resource里面引用-->
                <profiles.active>dev</profiles.active>
            </properties>
        </profile>

        <profile>
            <id>prod</id>
            <properties>
                <profiles.active>prod</profiles.active>
            </properties>

            <activation> <!--activation用来指定激活方式-->
                <!--这个字段表示默认激活-->
                <activeByDefault>true</activeByDefault>
            </activation>
        </profile>

        <profile>
            <id>test</id>
            <properties>
                <profiles.active>test</profiles.active>
            </properties>
        </profile>
    </profiles>

    <build>
        <!-- software.name、version自定义属性，取自properties节点 -->
        <finalName>${software.name}-${version}</finalName>
        <resources>
            <resource>
                <!-- project.basedir 取自应用内置名字，自动替换成项目地址-->
                <directory>${project.basedir}/src/main/resources</directory>
                <filtering>true</filtering>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <executable>true</executable>
                </configuration>
            </plugin>
        </plugins>

        <resources>
            <resource>
                <directory>src/main/resources/</directory>
                <!--打包时先排除掉三个文件夹-->
                <excludes>
                    <exclude>dev/*</exclude>
                    <exclude>prod/*</exclude>
                    <exclude>test/*</exclude>
                </excludes>
                <includes>
                    <!--如果有其他定义通用文件，需要包含进来-->
                    <!--<include>messages/*</include>-->
                </includes>
            </resource>
            <resource>
                <!--这里是关键！ 根据不同的环境，把对应文件夹里的配置文件打包-->
                <directory>src/main/resources/${profiles.active}</directory>
            </resource>
        </resources>
    </build>

pom详解

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