1.说明
命名归约-官方命名:
前缀:spring-boot-starter-xxx(比如:spring-boot-starter-web)
命名归约-自定义命名:
xxx-spring-boot-starter(比如:mybatis-spring-boot-starter)可怜的mybatis。
2.编写启动器
1、在IDEA中新建一个空项目 java-spring-boot-starter
2、新建一个普通Maven模块:my-spring-boot-starter
3、新建一个Springboot模块:my-spring-boot-starter-autoconfigure
4、点击apply即可,基本结构
5、在 starter 中 导入 autoconfigure 的依赖
<!-- 启动器 --> <dependencies> <dependency> <groupId>com.example</groupId> <artifactId>my-spring-boot-starter-autoconfigure</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies>
6、将 autoconfigure 项目下多余的文件都删掉,Pom中只留下一个 starter,这是所有的启动器基本配置
7、编写一个自己的服务
package com.example; public class HelloService { HelloProperties helloProperties; public HelloProperties getHelloProperties() { return helloProperties; } public void setHelloProperties(HelloProperties helloProperties) { this.helloProperties = helloProperties; } public String sayHello(String name){ return helloProperties.getPrefix() + name + helloProperties.getSuffix(); } }
8、编写HelloProperties 配置类
package com.example; import org.springframework.boot.context.properties.ConfigurationProperties; @ConfigurationProperties(prefix = "my.hello") public class HelloProperties { private String prefix; private String suffix; public String getPrefix() { return prefix; } public void setPrefix(String prefix) { this.prefix = prefix; } public String getSuffix() { return suffix; } public void setSuffix(String suffix) { this.suffix = suffix; } }
9、编写自动配置类并注入bean,测试
package com.example; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration @ConditionalOnWebApplication @EnableConfigurationProperties(HelloProperties.class) public class HelloServiceAutoConfiguration { @Autowired HelloProperties helloProperties; @Bean public HelloService helloService(){ HelloService service = new HelloService(); service.setHelloProperties(helloProperties); return service; } }
10、在resources编写一个自己的 META-INF\spring.factories
# Auto Configure org.springframework.boot.autoconfigure.EnableAutoConfiguration=\ com.kuang.HelloServiceAutoConfiguration
11、编写完成后,可以安装到maven仓库中,看一下最终的结构:
3.测试
1、新建一个SpringBoot 项目
2、导入我们自己写的启动器
<dependency> <groupId>org.example</groupId> <artifactId>my-spring-boot-starter</artifactId> <version>1.0-SNAPSHOT</version> </dependency>
3、编写一个 HelloController 进行测试我们自己的写的接口!
package com.example.controller; import com.example.HelloService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloController { @Autowired HelloService helloService; @RequestMapping("/hello") public String hello() { return helloService.sayHello("-my-"); } }
4、编写配置文件 application.properties
my.hello.prefix="hello" my.hello.suffix="starter"
5、启动项目进行测试,结果成功 !