关于springboot2.X使用外部tomcat服务器进行部署的操作详细步骤

1.修改pom.xml文件（4个地方）

         ①<packaging>war</packaging>将其中的jar该为war

         ②<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> 修改spring-boot-starter-web排除内置的tomcat

③<dependency>

          <groupId>org.apache.tomcat.embed</groupId>

          <artifactId>tomcat-embed-jasper</artifactId>

          <scope>provided</scope>

     </dependency>

添加这个依赖，不然在打war包的时候会包ClassNotFound异常，打包失败，这个点很关键

    ④<build>

                   <plugins>

                            <plugin>

                     <groupId>org.apache.maven.plugins</groupId>

                     <artifactId>maven-war-plugin</artifactId>

                       <configuration>

                          <warName>test</warName>

                       </configuration>

                </plugin>

             </plugins>

         </build>

修改插件为maven-war-plugin，添加configuration节点，配置war包的名称，解决资源访问路径错误问题

2.     修改springboot入口配置

①继承SpringBootServletInitializer

②重写configure()@SpringBootApplicatio@EnableCachin@ServletComponentScan

public class TestApplication extends SpringBootServletInitializer {

   @Override

   protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {

      return builder.sources(TestApplication.class);

   }

   public static void main(String[] args) {

      SpringApplication.run(TestApplication.class, args);

   }

}

3.idea打war包操作

         ①点击右侧“Maven Project” --> Lifecycle -->clean,清除原先maven的配置对新打包的影响；

         ②点击Lifecycle -->install进行打包，看控制台知道程序运行结束Process finished with exit code 0；

4.按照tomcat部署war包的程序进行正常部署，部署完成后启动tomcat即可正常访问项目。