maven filter/profile

maven 命令：clean package -Dmaven.test.skip=true -P deta

1.命令很简单是：清class文件，打包构建，跳过测试，注意最后一个 -P product，-P maven 会激活项目下的pom.xml配置的<profiles>标签下id为deta

<profiles>
    <profile>
      <!-- 本地开发环境 -->
      <id>dev</id>
      <properties>
        <profiles.active>dev</profiles.active>
      </properties>
      <activation>
        <!-- 设置默认激活这个配置 -->
        <activeByDefault>true</activeByDefault>
      </activation>
    </profile>
    <profile>
      <!-- 发布环境 -->
      <id>release</id>
      <properties>
        <profiles.active>release</profiles.active>
      </properties>
    </profile>
    <profile>
      <!-- 测试环境 -->
      <id>beta</id>
      <properties>
        <profiles.active>beta</profiles.active>
      </properties>
    </profile>
  </profiles>

2.使用占位符上面配置定义的${profiles.active}进行资源过滤

<build>
    <resources>
      <resource><!--不参与打包和替换的资源文件-->
        <directory>src/main/resources</directory>
        <filtering>true</filtering>
        <includes>
          <include>**/*.yml</include>
          <include>**/*.yaml</include>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
      </resource>
      <resource><!--不参与打包和替换的资源文件-->
        <directory>src/main/resources</directory>
        <filtering>false</filtering>
        <excludes>
          <exclude>**/*.pdf</exclude>
          <exclude>**/*.txt</exclude>
        </excludes>
      </resource>
    </resources>
    <filters>
      <filter>src/main/resources/config/${profiles.active}/log-profile.properties</filter>
    </filters>

需要自定义配置filter插件的分隔符${}。否则默认会使用@作为分隔符。

<plugin><!-- 需要自定义 delimiter-->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-resources-plugin</artifactId>
        <version>2.6</version>
        <configuration>
          <encoding>UTF-8</encoding>
          <delimiters>
            <delimiter>${*}</delimiter>
          </delimiters>
          <useDefaultDelimiters>false</useDefaultDelimiters>
        </configuration>
        </plugin>

总结
激活profile其实就是激活<profile>标签的id，给properties的属性赋值。
通过filters标签的源文件，对sources 的 input文件集进行内容替换。
注意：需要自定义分隔符。

整个pom配置参考

<?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>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.4.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>

  <groupId>com.aibi</groupId>
  <artifactId>springboot-demo</artifactId>
  <version>1.0-SNAPSHOT</version>
  <name>springboot-demo</name>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
<!--    <dependency>-->
<!--      <groupId>junit</groupId>-->
<!--      <artifactId>junit</artifactId>-->
<!--      <version>4.11</version>-->
<!--      <scope>test</scope>-->
<!--    </dependency>-->
  </dependencies>

  <profiles>
    <profile>
      <!-- 本地开发环境 -->
      <id>dev</id>
      <properties>
        <profiles.active>dev</profiles.active>
      </properties>
      <activation>
        <!-- 设置默认激活这个配置 -->
        <activeByDefault>true</activeByDefault>
      </activation>
    </profile>
    <profile>
      <!-- 发布环境 -->
      <id>release</id>
      <properties>
        <profiles.active>release</profiles.active>
      </properties>
    </profile>
    <profile>
      <!-- 测试环境 -->
      <id>beta</id>
      <properties>
        <profiles.active>beta</profiles.active>
      </properties>
    </profile>
  </profiles>


  <build>
    <resources>
      <resource><!--不参与打包和替换的资源文件-->
        <directory>src/main/resources</directory>
        <filtering>true</filtering>
        <includes>
          <include>**/*.yml</include>
          <include>**/*.yaml</include>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
      </resource>
      <resource><!--不参与打包和替换的资源文件-->
        <directory>src/main/resources</directory>
        <filtering>false</filtering>
        <excludes>
          <exclude>**/*.pdf</exclude>
          <exclude>**/*.txt</exclude>
        </excludes>
      </resource>
    </resources>
    <filters>
      <filter>src/main/resources/config/${profiles.active}/log-profile.properties</filter>
    </filters>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->

        <plugin><!-- 需要自定义 delimiter-->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-resources-plugin</artifactId>
        <version>2.6</version>
        <configuration>
          <encoding>UTF-8</encoding>
          <delimiters>
            <delimiter>${*}</delimiter>
          </delimiters>
          <useDefaultDelimiters>false</useDefaultDelimiters>
        </configuration>
        </plugin>

        <plugin>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

总结

只替换，不重新编译技巧
最后，排查中还有一个小技巧，不要用mvn install或者mvn package这种操作来重新运行，因为会很慢很耗时，直接用mvn clean resources:resources就可以了，它只复制&替换配置目录下的文件，非常地快

参考资料
https://blog.csdn.net/haiyuntai/article/details/53260191

https://blog.csdn.net/weixin_34259232/article/details/91757071