java - Spring Boot 应用程序执行器端点已注册且请求仍然失败

Question

我有一个带有以下启动代码的 Spring Boot 应用程序。 Actuator 端点被映射，bean 被移除。我看到执行器端点已注册，然后 bean 被删除。通过SO thread , 消息是无害的。但是当我试图到达任何执行器端点时，我收到了错误。我不确定我应该进一步研究什么才能让执行器工作。我附上了我所指的所有日志片段。

我用 maven 设置了项目:

Maven Spring 执行器部分

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-actuator</artifactId>
    </dependency>

Java 启动代码

@EnableAutoConfiguration(exclude = { MetricFilterAutoConfiguration.class, MetricRepositoryAutoConfiguration.class, MessageSourceAutoConfiguration.class })
@EnableConfigurationProperties({ MyAppProperties.class })
@SpringBootApplication
public class MyApp{
    private static final Logger LOG = LoggerFactory.getLogger(MyApp.class);
    public static void main(String[] args) throws UnknownHostException {
        SpringApplication app = new SpringApplication(MyApp.class);
        Environment env = app.run(args).getEnvironment();
        LOG.info("\n----------------------------------------------------------\n\t" +
                "Application '{}' is running! Access URLs:\n\t" +
                "Local: \t\thttp://localhost:{}\n\t" +
                "External: \thttp://{}:{}\n----------------------------------------------------------",
            env.getProperty("spring.application.name"),
            env.getProperty("server.port"),
            InetAddress.getLocalHost().getHostAddress(),
            env.getProperty("server.port"));
}
}

执行器在 DEBUG 模式下根据日志启动端点:

2017-03-17 11:19:29.378  INFO 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{[/info || /info.json],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-03-17 11:19:29.379 DEBUG 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : 1 request handler methods found on class org.springframework.boot.actuate.endpoint.mvc.HeapdumpMvcEndpoint: {public void org.springframework.boot.actuate.endpoint.mvc.HeapdumpMvcEndpoint.invoke(boolean,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.io.IOException,javax.servlet.ServletException={[],methods=[GET],produces=[application/octet-stream]}}
2017-03-17 11:19:29.379  INFO 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{[/heapdump || /heapdump.json],methods=[GET],produces=[application/octet-stream]}" onto public void org.springframework.boot.actuate.endpoint.mvc.HeapdumpMvcEndpoint.invoke(boolean,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.io.IOException,javax.servlet.ServletException
2017-03-17 11:19:29.380 DEBUG 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : 1 request handler methods found on class org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter: {public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()={[],methods=[GET],produces=[application/json]}}
2017-03-17 11:19:29.380  INFO 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{[/trace || /trace.json],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-03-17 11:19:29.384 DEBUG 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : 2 request handler methods found on class org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint: {public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint.value(java.lang.String)={[/{name:.*}],methods=[GET],produces=[application/json]}, public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()={[],methods=[GET],produces=[application/json]}}
2017-03-17 11:19:29.384  INFO 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{[/metrics/{name:.*}],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint.value(java.lang.String)
2017-03-17 11:19:29.384  INFO 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{[/metrics || /metrics.json],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-03-17 11:19:29.384 DEBUG 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : 1 request handler methods found on class org.springframework.cloud.context.restart.RestartMvcEndpoint: {public java.lang.Object org.springframework.cloud.context.restart.RestartMvcEndpoint.invoke()={[],methods=[POST]}}
2017-03-17 11:19:29.384  INFO 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{[/restart || /restart.json],methods=[POST]}" onto public java.lang.Object org.springframework.cloud.context.restart.RestartMvcEndpoint.invoke()
2017-03-17 11:19:29.386  INFO 17855 --- [           main] o.s.b.a.e.mvc.EndpointHandlerMapping     : Mapped "{[/beans || /beans.json],methods=[GET],produces=[application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
2017-03-17 11:19:29.386 DEBUG 17855 --- [           main] o.s.b.f.s.DefaultListableBeanFactory     : Finished creating instance of bean 'endpointHandlerMapping'
2017-03-17 11:19:29.386 DEBUG 17855 --- [           main] f.a.AutowiredAnnotationBeanPostProcessor : Autowiring by type from bean name 'org.springframework.boot.actuate.autoconfigure.EndpointWebMvcChildContextConfiguration$EndpointHandlerMappingConfiguration' to bean named 'mvcEndpoints'

最终我在日志中看到 bean 被删除了:

2017-03-17 11:19:29.415 DEBUG 17855 --- [           main] o.s.w.s.h.BeanNameUrlHandlerMapping      : Rejected bean name 'endpointHandlerMapping': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [           main] o.s.w.s.h.BeanNameUrlHandlerMapping      : Rejected bean name 'mvcEndpoints': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [           main] o.s.w.s.h.BeanNameUrlHandlerMapping      : Rejected bean name 'environmentMvcEndpoint': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [           main] o.s.w.s.h.BeanNameUrlHandlerMapping      : Rejected bean name 'heapdumpMvcEndpoint': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [           main] o.s.w.s.h.BeanNameUrlHandlerMapping      : Rejected bean name 'healthMvcEndpoint': no URL paths identified
2017-03-17 11:19:29.415 DEBUG 17855 --- [           main] o.s.w.s.h.BeanNameUrlHandlerMapping      : Rejected bean name 'metricsMvcEndpoint': no URL paths identified

当我向/info 或/health 发出请求以获取info 和health 时，我因为没有找到处理程序，所以被定向到 whitelabel 错误页面。

调试调度程序 servlet 后，我​​看到有 7 个处理程序，我希望在 BeanNameUrlHandlerMapping 中找到 /info 的映射。

org.springframework.web.servlet.handler.SimpleUrlHandlerMapping
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping 
org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping    
org.springframework.web.servlet.handler.SimpleUrlHandlerMapping 
org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport$EmptyHandlerMapping 
org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport$EmptyHandlerMapping
org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WelcomePageHandlerMapping 

由于列表中的第一个映射是 SimpleUrlHandlerMapping，它立即返回“无处理程序映射”，这将我带到错误页面。我尝试检查 order 是否重要并查看 BeanNameUrlHandlerMapping 以查看它是否返回处理程序映射并且没有返回任何。所以我怀疑之前删除 bean 的调试消息是导致问题的罪魁祸首。

有人可以建议我是否需要特别注意什么。

Answer 1

根据入门指南:Building a RESTful Web Service with Spring Boot Actuator你应该使用 spring-boot-starter-actuator 启动器:

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

而不是 spring-boot-actuator 依赖。

另请注意，根据 Spring Boot reference :

Information returned by HealthIndicators is often somewhat sensitive in nature. For example, you probably don’t want to publish details of your database server to the world. For this reason, by default, only the health status is exposed over an unauthenticated HTTP connection. If you are happy for complete health information to always be exposed you can set endpoints.health.sensitive to false.