使用Spring Boot時，各個starter用起來非常方便踏枣。所以我們也可以把自己的一些組件項目封裝為starter聋溜，方便其他業(yè)務系統(tǒng)使用

添加依賴

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-autoconfigure</artifactId>
        <version>2.1.6.RELEASE</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <version>2.1.6.RELEASE</version>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.8</version>
        <optional>true</optional>
    </dependency>
</dependencies>

屬性配置類

@Data
@ConfigurationProperties(prefix = "tenmao")
public class TenmaoProperties {
    private boolean enabled;
    private String name;
    private String url;
    private Set<String> hobbies;
}

核心服務類

public class TenmaoService {
    private TenmaoProperties tenmaoProperties;

    public TenmaoService(TenmaoProperties tenmaoProperties) {
        this.tenmaoProperties = tenmaoProperties;
    }

    public void greeting() {
        System.out.printf("tenmao: %s%n", tenmaoProperties);
    }
}

自動配置類

@Configuration
@ConditionalOnClass({TenmaoService.class, TenmaoProperties.class})
@EnableConfigurationProperties({TenmaoProperties.class})
@ConditionalOnProperty(prefix = "tenmao", value = "enabled", matchIfMissing = true)
public class TenmaoAutoConfiguration {
    private final TenmaoProperties tenmaoProperties;

    @Autowired
    public TenmaoAutoConfiguration(TenmaoProperties tenmaoProperties) {
        this.tenmaoProperties = tenmaoProperties;
    }

    @Bean
    @ConditionalOnMissingBean(TenmaoService.class)
    public TenmaoService tenmaoService() {
        return new TenmaoService(tenmaoProperties);
    }
}

現(xiàn)在可以打包發(fā)布到maven倉庫給其他項目使用了

使用

使用方式如下：

• 添加依賴

<dependency>
    <groupId>com.tenmao</groupId>
    <artifactId>tenmao-spring-boot-starter</artifactId>
    <version>1.0-SNAPSHOT</version>
</dependency>

• 配置信息(application.yml)

tenmao:
  enabled: true
  name: tenmao
  url: http://www.reibang.com
  hobbies:
    - basketball
    - football
    - pingpong

• 直接注入就可以使用

@Resource
private TenmaoService tenmaoService;

參考

• Spring Boot入門教程(三十一): 自定義Starter