[Java] 配置SpringBoot方便的切换jar和war的方法示例

• packaging配置由jar改为war
  
• 排除tomcat等容器的依赖
  
• 配置web.xml或者无web.xml打包处理
  

• 添加servletinitializer
  

<packaging>${pom.package}</packaging>

<!-- 作用是打war包的时候，不带版本号 -->
<finalname>${pom.packagename}</finalname>
 
<!--加入plugin-->
<plugin>
 <groupid>org.apache.maven.plugins</groupid>
 <artifactid>maven-war-plugin</artifactid>
 <version>3.2.2</version>
 <configuration>
  <!--如果想在没有web.xml文件的情况下构建war，请设置为false。-->
  <failonmissingwebxml>false</failonmissingwebxml>
 </configuration>
</plugin>

<dependency>
 <groupid>org.springframework.boot</groupid>
 <artifactid>spring-boot-starter-web</artifactid>
 <exclusions>
  <exclusion>
   <groupid>org.springframework.boot</groupid>
   <artifactid>spring-boot-starter-tomcat</artifactid>
  </exclusion>
 </exclusions>
</dependency>

<profiles>
 <profile>
  <!-- 开发环境 -->
  <id>jar</id>
  <activation>
   <activebydefault>true</activebydefault>
  </activation>
  <properties>
   <pom.package>jar</pom.package>
   <pom.packagename>${project.artifactid}-${project.version}</pom.packagename>
   <pom.profiles.active>dev</pom.profiles.active>
  </properties>
  <dependencies>
   <dependency>
  <groupid>org.springframework.boot</groupid>
  <artifactid>spring-boot-starter-tomcat</artifactid>
   </dependency>
  </dependencies>
 </profile>
 <profile>
  <id>war</id>
  <properties>
   <pom.package>war</pom.package>
   <pom.packagename>${project.artifactid}</pom.packagename>
   <pom.profiles.active>linux</pom.profiles.active>
  </properties>
  <dependencies>
   <dependency>
  <groupid>org.springframework.boot</groupid>
  <artifactid>spring-boot-starter-tomcat</artifactid>
  <scope>provided</scope>
   </dependency>
   <dependency>
  <groupid>javax.servlet</groupid>
  <artifactid>javax.servlet-api</artifactid>
  <version>4.0.1</version>
  <scope>provided</scope>
   </dependency>
  </dependencies>
 </profile>
</profiles>

• 入口类继承springbootservletinitializer
  
• 重写configure方法
  

public class application extends springbootservletinitializer {
 
 public static void main(string[] args) {
  springapplication.run(application.class, args);
 }
 
 @profile(value = {"war"})
 @override
 protected springapplicationbuilder configure(springapplicationbuilder application) {
  return application.sources(application.class);
 }
}