SpringBoot手写自定义starter源码

		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
            <version>2.0.3.RELEASE</version>
        </dependency>
        <!--输入properties或yml会自动提示-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <version>2.1.3.RELEASE</version>
        </dependency>

public class TestBean {
    private String msg;
    public String getMsg() {
        return msg;
    }
    public void setMsg(String msg) {
        this.msg = msg;
    }
    @Override
    public String toString() {
        return "TestBean{" +
                "msg='" + msg + '\'' +
                '}';
    }
}

@ConfigurationProperties(prefix = "hello")
public class HelloServiceProperties {
    private static final String MSG="hello world";
    private String msg=MSG;
    public static String getMSG() {
        return MSG;
    }
    public String getMsg() {
        return msg;
    }
    public void setMsg(String msg) {
        this.msg = msg;
    }
}

@Configuration
@ConditionalOnClass({TestBean.class})//判断当前classpath下是否存在指定类，若是则将当前的配置装载入spring容器
@EnableConfigurationProperties(HelloServiceProperties.class)//激活自动配置（指定文件中的配置）
public class MyAutoConfiguration {
    @Autowired
    HelloServiceProperties helloServiceProperties;//注入测试的配置信息类
    @Bean
    @ConditionalOnMissingBean(TestBean.class) //当前上下文中没有TestBean实例时创建实例
    public TestBean getTestService(){
        TestBean testBean=new TestBean();
        testBean.setMsg(helloServiceProperties.getMsg());
        return testBean;
    }
}

# Auto Configure
org.springframework.boot.autoconfigure.EnableAutoConfiguration=com.ftx.tomcat.bean.MyAutoConfiguration

mvn clean install

<dependency>
            <groupId>com.ftx.starter</groupId>
            <artifactId>write-starter</artifactId>
            <version>1.3</version>
        </dependency>
<repositories>
        <repository>
            <id>nexus</id>
            <name>nexus</name>
            <url>http://nexus.tiger2.cn/nexus/content/groups/public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>

@RestController
@RequestMapping("/test")
public class TestController {
    @Autowired
    TestBean testBean;
    @RequestMapping("/user")
    public String user(){
        User user=new User();
        user.setName(testBean.getMsg());
        return user.toString();
    }
}