02_自定义Springboot starter

 

• 创建springboot starter 

1. 创建一个demo starter 
2. 

3.  创建配置类

   @Configuration
   @EnableConfigurationProperties(EmailProperties.class)
   @ConditionalOnBean(EmailEnable.class)
   public class EmailAutoConfiguration {
   
       static {
           System.out.println("EmailAutoConfiguration init...");
       }
   
       @Bean
       public EmailServiceImpl emailServiceImpl() {
           return new EmailServiceImpl();
       }
   }
   
   
   // =============================================
   public class EmailEnable {
   }
   
   // =============================================
   
   @ConfigurationProperties(prefix = "email.config")
   public class EmailProperties {
   }
   // =============================================
   
   @Documented
   @Inherited
   @Retention(RetentionPolicy.RUNTIME)
   @Target({ElementType.TYPE})
   @Import(EmailEnable.class)
   public @interface EnableAutoEmail {
   }

    

4. 创建具体业务类型

   public interface EmailService {
   
       void sendEmail() throws EmailServiceException;
   
   }
   
   //========================================
   
   public class EmailServiceImpl implements EmailService {
       @Override
       public void sendEmail() throws EmailServiceException {
          
       }
   }

5. 增加配置文件 resource目录下创建一个META-INF文件夹，这里需要注意的是EmailAutoConfiguration需要放到一个根目录下。

   org.springframework.boot.autoconfigure.EnableAutoConfiguration=XXX.EmailAutoConfiguration

    

6. 将项目install到本地的maven库中，打包时需要注意一下，SpringBoot项目打包的JAR是可执行JAR，它的类放在BOOT-INF目录下，如果直接作为其他项目的依赖，会找不到类。可以通过修改pom文件来解决，代码如下：

   <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <configuration>
            <classifier>exec</classifier>
        </configuration>
   </plugin>

   如果需要上传私有maven中，需要配置以下代码：

       <distributionManagement>
           <repository>
               <id>XXX</id>
               <name>XXX</name>
               <url>XXX</url>
               <layout>default</layout>
           </repository>
           <snapshotRepository>
               <id>XXX</id>
               <name>XXX</name>
               <url>XXX</url>
           </snapshotRepository>
       </distributionManagement>

    

7. 使用springboot start，引入包

           <dependency>
               <groupId>com.example</groupId>
               <artifactId>demo2</artifactId>
               <version>0.0.1-SNAPSHOT</version>
           </dependency>

    

8. 开启starter，需要在ApsUiApplicationServer中增加@EnableAutoEmail 注解
9. 测试

   public class MailTest extends ApplicationTest {
       @Autowired
       private EmailService emailService;
       @Test
       public void sendEmail2() throws EmailServiceException {
           emailService.sendEmail();
       }
   }

    

10. 参考资料：

    SpringBoot-自定义Start
    https://blog.csdn.net/cstp321/article/details/124755699
    https://www.jianshu.com/p/15433fd85108
    https://blog.csdn.net/Jieur/article/details/122438549?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522170018651416800213015032%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=170018651416800213015032&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-122438549-null-null.142^v96^pc_search_result_base8&utm_term=springboot%20starter%20&spm=1018.2226.3001.4187

     

    java: 错误: 无效的源发行版:17
    https://blog.csdn.net/qq_37293274/article/details/133906505
    https://www.jb51.net/program/298274cmd.htm
    https://blog.csdn.net/wq106532533/article/details/130610260
    https://www.jb51.net/program/298274cmd.htm

    Maven install 报Exception AssertionError解决办法
    https://blog.csdn.net/xiaolei_126/article/details/128086712

    
    spring-boot项目使用maven打包时出现BOOT-INF文件夹的问题

    https://blog.csdn.net/wufaqidong1/article/details/133588084

11.