第五节，Springboot@Configuration配置组件

/**
 * @anthor DencyCheng
 * @date 2018/9/5 0005
 */
@Configuration
public class Myconfig {

    public Myconfig() {
        System.out.println("自定义配置文件初始化...");
    }

    @Bean(name = "rtString")
    public String returnString(){
        return "我从自定义配置文件中获取";
    }
}

/**
 * @anthor DencyCheng
 * @date 2018/9/5 0005
 */
@RunWith(SpringRunner.class)
@SpringBootTest
public class ConfigTest {

    @Autowired
    String rtString;

    @Test
    public void run1(){
        System.out.println(rtString);
    }
}

自定义配置文件初始化...
2018-09-05 23:20:05.340  INFO 4516 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-09-05 23:20:05.543  INFO 4516 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.web.context.support.GenericWebApplicationContext@5b799640: startup date [Wed Sep 05 23:20:03 CST 2018]; root of context hierarchy
2018-09-05 23:20:05.634  INFO 4516 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-09-05 23:20:05.636  INFO 4516 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-09-05 23:20:05.668  INFO 4516 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-09-05 23:20:05.669  INFO 4516 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-09-05 23:20:05.976  INFO 4516 --- [           main] com.dencycheng.demo.ConfigTest           : Started ConfigTest in 2.768 seconds (JVM running for 4.026)
我从自定义配置文件中获取