根据SpringBoot的Starter编写规则,需要编写xxxStarter依赖xxxAutoConfigurer,xxxStarter是一个空的jar,仅提供辅助性的依赖管理,引入其他类库
1.建立一个empty工程,建立一个普通maven模块xxxStarter,建立一个SpringBoot模块xxxAutoConfigurer,前者依赖后者
2.xxxAutoConfigurer:
新建:HelloService:
public class HelloService { private HelloProperties helloProperties; public void setHelloProperties(HelloProperties helloProperties) {
this.helloProperties = helloProperties;
}
public HelloProperties getHelloProperties() {
return helloProperties;
} public String hello(){
return StringFormatter.format("%s:你好,%s欢迎光临",helloProperties.getWeekend(),helloProperties.getName()).getValue();
}
}
*:HelloProperties类
@ConfigurationProperties(prefix = "brx")
public class HelloProperties { private String weekend; private String name; public String getWeekend() {
return weekend;
} public void setWeekend(String weekend) {
this.weekend = weekend;
} public String getName() {
return name;
} public void setName(String name) {
this.name = name;
}
}
新建:将启动类修改为一个配置类,并去除pom.xml中的maven插件
@Configuration
@EnableConfigurationProperties(HelloProperties.class)//只有在web上下文才起作用
@ConditionalOnWebApplication
public class BrxautoconfigApplication { @Autowired
HelloProperties helloProperties; @Bean
HelloService helloService(){
HelloService helloService = new HelloService();
helloService.setHelloProperties(helloProperties);
return helloService;
}
}
新建:META-INF/spring.factories:
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
com.brx.demo.brxautoconfig.BrxautoconfigApplication
3.将starter和Autocofigure项目install到本地仓库
4.新建一个普通web项目,并添加xxxStarter库,并在application.properties添加:
brx.weekend="周一"
brx.name="白gg"
个人感觉:starter的意义就是把一些内部公用的代码抽成starter,共其他项目引入,并提供自动配置等功能