SpringBoot系列--自动装配原理2

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>springboot_custome_starter</artifactId>
        <groupId>com.kuroko.springboot</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <description>
        启动器（starter）是一个空的jar文件，
        仅仅提供辅助性依赖管理，
        这些依赖需要自动装配或其他类库。
    </description>

    <artifactId>kuroko-spring-boot-starter</artifactId>

    <dependencies>
        <!--引入autoconfigure-->
        <dependency>
            <groupId>com.kuroko.springboot</groupId>
            <artifactId>kuroko-spring-boot-autoconfigure</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

        <!--如果当前starter 还需要其他的类库就在这里引用-->
    </dependencies>

</project>Copy

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>springboot_custome_starter</artifactId>
        <groupId>com.kuroko.springboot</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>kuroko-spring-boot-autoconfigure</artifactId>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--‐导入配置文件处理器，配置文件进行绑定就会有提示-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.4.0</version>
            <optional>true</optional>
        </dependency>

    </dependencies>
</project>Copy

/***
 * 给web应用自动添加一个首页
 */
@Configuration
@ConditionalOnProperty(value = "kuroko.hello.name")
@EnableConfigurationProperties(HelloProperties.class)
@ConditionalOnClass(StrUtil.class)
public class HelloAutoConfitguration {

    @Autowired
    HelloProperties helloProperties;

    @Bean
    public IndexController indexController(){
        return new IndexController(helloProperties);
    }
}Copy

@ConfigurationProperties("kuroko.hello")
public class HelloProperties {
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}Copy

@RestController
public class IndexController {

    HelloProperties helloProperties;

    public IndexController(HelloProperties helloProperties) {
        this.helloProperties=helloProperties;
    }

    @RequestMapping("/")
    public String index(){
        return helloProperties.getName()+"欢迎您";
    }

}Copy