1.systemScope的使用
利用systemScope可以讓maven項目依賴本地jar包
<!--釘釘jar-->
<dependency>
<groupId>com.taobao.top</groupId>
<artifactId>top-api-sdk-java</artifactId>
<version>1.0</version>
<scope>system</scope>
<systemPath>${project.basedir}/../lib/taobao-sdk-java-auto_1479188381469-20200201.jar</systemPath>
</dependency>
</dependencies>
2.使用了systemScope后的項目打包
Spring Boot項目用systemScope方式引用了jar包后，若需要支持打包后可以用內(nèi)置tomcat/外置tomcat運行，需要利用maven plugin對打包過程進(jìn)行處理,打包時將本地jar包一并打包望拖。
2.1 war包
如果項目打包成war包，目錄結(jié)構(gòu)如圖2-1,lib下的jar包無論內(nèi)置tomcat/外置tomcat啟動時霜浴，都會去加載;lib-provided下的包僅內(nèi)置tomcat會去加載（被視為內(nèi)置tomcat的自身提供的依賴包）
圖2-1 war包目錄結(jié)構(gòu)
<build>
<plugins>
<!-- 打包成war -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<!-- 忽略web.xml-->
<failOnMissingWebXml>false</failOnMissingWebXml>
<warName>${artifactId}</warName>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<fork>true</fork>
<!-- 將外部依賴一并打包，若是打包war則打包到lib-provided -->
<!-- <includeSystemScope>true</includeSystemScope> -->
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>${maven.compiler.plugin.version}</version>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>compile</phase>
<!-- 編譯階段復(fù)制外部jar到lib -->
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/lib
</outputDirectory>
<includeScope>system</includeScope>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
<finalName>${artifactId}</finalName>
</build>
2.2 jar包
spring boot項目依賴外部jar要打包成jar包蓝纲，只需要以下配置
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>2.1.1.RELEASE</version>
<configuration>
<fork>true</fork> <!-- 如果沒有該配置，devtools不會生效 -->
<includeSystemScope>true</includeSystemScope>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
打包后目錄結(jié)構(gòu)如圖2-2：
v2-2 打包成jar包的效果
3.Spring Boot項目動態(tài)打包
build節(jié)點新增晌纫，如下代碼：
<resources>
<resource>
<directory>src/main/resources/</directory>
<excludes>
<exclude>application.yml</exclude>
</excludes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources/</directory>
<includes>
<include>application.yml</include>
</includes>
<!-- 用參數(shù)化值替換文件文本內(nèi)容（如@profileActive@） -->
<filtering>true</filtering>
</resource>
</resources>
然后pom.xml文件繼續(xù)添加以下配置
<profiles>
<profile>
<!-- 本地開發(fā)環(huán)境打包： mvn clean package -P dev -->
<id>dev</id>
<properties>
<profileActive>druid,dev</profileActive>
</properties>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
</profile>
<profile>
<!-- 測試環(huán)境打包： mvn clean package -P test -->
<id>test</id>
<properties>
<profileActive>druid,test</profileActive>
</properties>
</profile>
<profile>
<!-- 生產(chǎn)環(huán)境打包： mvn clean package -P prod -->
<id>prod</id>
<properties>
<profileActive>druid,prod</profileActive>
</properties>
</profile>
<profile>
<!-- 預(yù)發(fā)布環(huán)境打包： mvn clean package -P pre -->
<id>pre</id>
<properties>
<profileActive>druid,prod,pre</profileActive>
</properties>
</profile>
</profiles>
application.yml文件中配置
spring:
profiles:
active: @profileActive@
@profileActive@打包時税迷，會被動態(tài)替換成profileActive節(jié)點的值。
圖3-1 spring boot配置文件
