《Maven实战》学习笔记(5)--不同环境配置
一般来说，项目的配置文件都在resources下面，默认maven会从下面路径查找资源文件，这是超级pom中的配置
<resources>
????? <resource>
??????? <directory>F:\maven_workspace\workspace\piaoyi\service\src\main\resources</directory>
????? </resource>
??? </resources>
??? <testResources>
????? <testResource>
??????? <directory>F:\maven_workspace\workspace\piaoyi\service\src\test\resources</directory>
????? </testResource>
??? </testResources>
可以将不同环境的配置，通过属性定义的方式配置在profiles中(pom)，然后在项目配置文件中使用这些mavne属性，在构建不同的环境时，通过激活不同的frofile来决定使用哪个环境的配置，比如（该profiles不能被子项目继承，只对当前pom项目有效，所以推荐配置在settings中）：
<profiles>
??? ??? <profile>
??? ??? ??? <id>dev</id>
??? ??? ??? <properties>
??? ??? ??? ??? <db.driver>com.mysql.jdbc.Driver</db.driver>
??? ??? ??? ??? <db.url>jdbc:mysql://localhost:3306/test</db.url>
??? ??? ??? </properties>
??? ??? </profile>
??? ??? <profile>
??? ??? ??? <id>test</id>
??? ??? ??? <properties>
??? ??? ??? ??? <db.driver>com.mysql.jdbc.Driver</db.driver>
??? ??? ??? ??? <db.url>jdbc:mysql://192.168.0.10:3306/test</db.url>
??? ??? ??? </properties>
??? ??? </profile>
??? </profiles>
同时，需要在pom中的修改资源配置（定义在聚会项目中即可，可以被继承），如下，增加在pom中：
??? <build>
??? ??? <resources>
??? ??? ??? <resource>
??? ??? ??? ??? <directory>${project.basedir}\src\main\resources</directory>
??? ??? ??? ??? <filtering>true</filtering>
??? ??? ??? </resource>
??? ??? </resources>
??? ??? <testResources>
??? ??? ??? <testResource>
??? ??? ??? ??? <directory>${project.basedir}\src\test\resources</directory>
??? ??? ??? ??? <filtering>true</filtering>
??? ??? ??? </testResource>
??? ??? </testResources>
??? </build>
然后在执行构建时，执行如下命令：
mvn clean install -Pdev
激活该profile
也可以在settings.xml中进行配置，以使某个profile一直处于激活状态
??? <activeProfiles>
??? ??? <activeProfile>nexus</activeProfile>
??? ??? <activeProfile>dev</activeProfile>
??? </activeProfiles>
以上配置，只能替换classes下的资源文件，如果希望替换webApp下的文件内容，需要增加如下插件：
??? ??? ??? <plugin>
??? ??? ??? ??? <groupId>org.apache.maven.plugins</groupId>
??? ??? ??? ??? <artifactId>maven-war-plugin</artifactId>
??? ??? ??? ??? <version>2.1.1</version>
??? ??? ??? ??? <configuration>
??? ??? ??? ??? ??? <webResources>
??? ??? ??? ??? ??? ??? <resource>
??? ??? ??? ??? ??? ??? ??? <filtering>true</filtering>
??? ??? ??? ??? ??? ??? ??? <directory>src/main/webapp</directory>
??? ??? ??? ??? ??? ??? </resource>
??? ??? ??? ??? ??? </webResources>
??? ??? ??? ??? </configuration>
??? ??? ??? </plugin>
习惯ant的可以使用如下方式进行资源文件替换
<plugin>
??? ??? ??? ??? <groupId>org.apache.maven.plugins</groupId>
??? ??? ??? ??? <artifactId>maven-antrun-plugin</artifactId>
??? ??? ??? ??? <version>1.3</version>
??? ??? ??? ??? <executions>
??? ??? ??? ??? ??? <!-- 执行的动作 -->
??? ??? ??? ??? ??? <execution>
??? ??? ??? ??? ??? ??? <id>ant-copy</id>
??? ??? ??? ??? ??? ??? <phase>prepare-package</phase>????? <!-- 绑定到prepare-package 阶段-->
??? ??? ??? ??? ??? ??? <goals>
??? ??? ??? ??? ??? ??? ??? <goal>run</goal>
??? ??? ??? ??? ??? ??? </goals>
??? ??? ??? ??? ??? ??? <configuration>
??? ??? ??? ??? ??? ??? ??? <tasks> <!-- 调用ant的copy任务执行资源文件替换 -->
??? ??? ??? ??? ??? ??? ??? ??? <echo message="prepare-release run" />
??? ??? ??? ??? ??? ??? ??? ??? <copy todir="${project.build.directory}/classes/config" overwrite="true">
??? ??? ??? ??? ??? ??? ??? ??? ??? <fileset dir="${project.basedir}/config/release" />
??? ??? ??? ??? ??? ??? ??? ??? </copy>
??? ??? ??? ??? ??? ??? ??? ??? <echo message="prepare-release completed!" />
??? ??? ??? ??? ??? ??? ??? </tasks>
??? ??? ??? ??? ??? ??? </configuration>
??? ??? ??? ??? ??? </execution>
??? ??? ??? ??? ??? 可以定义多个动作
??? ??? ??? ??? </executions>
??? ??? ??? </plugin>
