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232 lines
8.2 KiB
Markdown
232 lines
8.2 KiB
Markdown
## 1 概述
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本质上配置的Build标签是对超级POM配置的Build标签的叠加。（猜想 sofaboot的目录结构也是通过build标签定义了约定的目录结构。）
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## 2 作用
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### 配置约定的目录结构Dir
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```
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<build>
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<sourceDirectory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/src/main/java</sourceDirectory>
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<scriptSourceDirectory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/src/main/scripts</scriptSourceDirectory>
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<testSourceDirectory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/src/test/java</testSourceDirectory>
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<outputDirectory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/target/classes</outputDirectory>
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<testOutputDirectory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/target/test-classes</testOutputDirectory>
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<resources>
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<resource>
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<directory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/src/main/resources</directory>
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</resource>
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</resources>
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<testResources>
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<testResource>
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<directory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/src/test/resources</directory>
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</testResource>
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</testResources>
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<directory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/target</directory>
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<finalName>project03-maven-test-0.0.1-snapshot</finalName>
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```
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### 备用插件管理pluginManagement
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pluginManagement标签存放着多个插件
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* maven-antrun-plugin
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* maven-assembly-plugin
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* mavne-dependency-plugin
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* maven-release-plugin
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通过pluginMangement标签管理起来的插件，和dependencyManagement一样。子工程使用时可以忽略版本号，在父工程中统一管理版本。父子工程仍旧能够起到版本管理的作用。
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* spring-boot-dependencies管理的插件信息
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```
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<build>
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<pluginManagement>
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<plugins>
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<plugin>
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<groupId>org.codehaus.mojo</groupId>
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<artifactId>build-helper-maven-plugin</artifactId>
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<version>${build-helper-maven-plugin.version}</version>
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</plugin>
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<plugin>
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<groupId>org.flywaydb</groupId>
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<artifactId>flyway-maven-plugin</artifactId>
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<version>${flyway.version}</version>
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</plugin>
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<plugin>
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<groupId>pl.project13.maven</groupId>
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<artifactId>git-commit-id-plugin</artifactId>
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<version>${git-commit-id-plugin.version}</version>
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</plugin>
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<plugin>
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```
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### 生命周期插件plugins
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plugins 标签存放的是默认生命周期中实际会用到的插件。这是正式使用的插件。正如dependencyManagement一样，是备用的依赖。
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* 是execution不是exculusion
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```xml
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<build>
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<plugins>
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<plugin>
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<artifactId>maven-clean-plugin</artifactId>
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<version>3.1.0</version>
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<executions>
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<execution>
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<id>default-clean</id>
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<phase>clean</phase>
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<goals>
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<goal>clean</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<artifactId>maven-install-plugin</artifactId>
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<version>2.5.2</version>
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<executions>
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<execution>
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<id>default-install</id>
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<phase>install</phase>
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<goals>
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<goal>install</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<artifactId>maven-deploy-plugin</artifactId>
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<version>2.8.2</version>
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<executions>
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<execution>
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<id>default-deploy</id>
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<phase>deploy</phase>
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<goals>
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<goal>deploy</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<artifactId>maven-site-plugin</artifactId>
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<version>3.3</version>
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<executions>
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<execution>
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<id>default-site</id>
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<phase>site</phase>
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<goals>
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<goal>site</goal>
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</goals>
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<configuration>
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<outputDirectory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/target/site</outputDirectory>
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<reportPlugins>
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<reportPlugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-project-info-reports-plugin</artifactId>
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</reportPlugin>
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</reportPlugins>
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</configuration>
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</execution>
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<execution>
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<id>default-deploy</id>
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<phase>site-deploy</phase>
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<goals>
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<goal>deploy</goal>
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</goals>
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<configuration>
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<outputDirectory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/target/site</outputDirectory>
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<reportPlugins>
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<reportPlugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-project-info-reports-plugin</artifactId>
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</reportPlugin>
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</reportPlugins>
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</configuration>
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</execution>
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</executions>
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<configuration>
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<outputDirectory>/Users/yinkanglong/work/notes/maven/maven源码/project03-maven-test/target/site</outputDirectory>
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<reportPlugins>
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<reportPlugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-project-info-reports-plugin</artifactId>
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</reportPlugin>
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</reportPlugins>
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</configuration>
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</plugin>
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</plugins>
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</build>
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```
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## 3 典型应用
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### source标签和target标签
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* Idea读取的是maven的settings.xml种jdk的版本进行编译的执行。
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* 在settings.xml中的profile配置的jdk版本，注释掉。则IDEA无法正常调用指定版本的jdk编译器，编译程序。
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* 在plugins能够通过指定jdk的版本，实现当前步骤的正常编译。
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* source的配置就是指定的版本。java编译的时候的source参数
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* target是调用编译器时指定的。java编译的时候target参数。
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* 在settings.xml中配置jdk版本：尽在本地剩下，如果驼鹿当前settings。xml能够覆盖的范围，则无法生效
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* 在当前maven工程的pom.xml种配置：无论在哪个环境执行编译等构建操作都有效。
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### springboot定制化打包
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* Spring-boot-maven-plugin，用来改变maven默认的构建行为。具体来说就是改变打包的行为。
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* 默认情况下maven调用maven-jar-plugin插件的jar目标，生成普通的jar
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* 普通jar没办法通过java -jar xxx.jar命令启动运行，
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* 但是Springboot的设计理念就是每一个微服务导出一个jar包。这个jar包可以使用jar -jar命令直接启动。例如需要web的时候，就需要讲tomcat等插件打包到一起。
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* 使用方式，配置Spring-boot-maven-plugin插件。即可使用springboot的打包方式进行打包。
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```xml
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<version>2.6.2</version>
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</plugin>
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</plugins>
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</build>
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```
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插件提供了6个maven goal
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* build-info：生成项目的构建信息文件 build-info.properties
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* help：用于展示spring-boot-maven-plugin的帮助信息。使用命令行mvn spring-boot:help -Ddetail=true -Dgoal=<goal-name>可展示goal的参数描述信息。
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* repackage：可生成可执行的jar包或war包。插件的核心goal。
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* run：运行 Spring Boot 应用
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* start：在集成测试阶段，控制生命周期
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* stop：在集成测试阶段，控制生命周期
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### mybatis的逆向工程
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插件也可以有自己的依赖。
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### resources
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resource可以配置资源过滤
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* directory指定资源过滤的目录
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* filtering是否打开资源过滤
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* include 包含资源过滤的文件
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* exclude 排除资源过滤的文件。不会被打包的target目标文件夹当中。
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## 总结
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maven的POM中的一些内容。 |