11.5 Endpoint监控接口

我们来尝试访问：http://127.0.0.1:8000/application/beans ，浏览器显示如下信息：

  1. Whitelabel Error Page
  3. This application has no explicit mapping for /error, so you are seeing this as a fallback.
  5. Mon Jul 17 21:30:35 CST 2017
  6. There was an unexpected error (type=Unauthorized, status=401).
  7. Full authentication is required to access this resource.

提示没有权限访问。我们去控制台日志可以看到下面这行输出：

  1. s.b.a.e.m.MvcEndpointSecurityInterceptor : Full authentication is required to access actuator endpoints. Consider adding Spring Security or set 'management.security.enabled' to false.

意思是说，要访问这些Endpoints需要权限，可以通过Spring Security来实现权限控制，或者把权限限制去掉：把management.security.enabled设置为false。

我们在application.properties里面添加配置：

  1. management.security.enabled=false

重启应用，再次访问，我们可以看到如下输出：

  1. [
  2.   {
  3.     "context": "application:8000",
  4.     "parent": null,
  5.     "beans": [
  6.       {
  7.         "bean": "chapter11KotlinSpringbootApplication",
  8.         "aliases": [
  10.         ],
  11.         "scope": "singleton",
  12.         "type": "com.easy.kotlin.chapter11_kotlin_springboot.Chapter11KotlinSpringbootApplication$$EnhancerBySpringCGLIB$$353fd63e",
  13.         "resource": "null",
  14.         "dependencies": [
  16.         ]
  17.       },
  18.       ...
  19.       {
  20.         "bean": "org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration",
  21.         "aliases": [
  23.         ],
  24.         "scope": "singleton",
  25.         "type": "org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerBySpringCGLIB$$24d31c25",
  26.         "resource": "null",
  27.         "dependencies": [
  28.           "dataSource",
  29.           "spring.jpa-org.springframework.boot.autoconfigure.orm.jpa.JpaProperties"
  30.         ]
  31.       },
  32.       {
  33.         "bean": "transactionManager",
  34.         "aliases": [
  36.         ],
  37.         "scope": "singleton",
  38.         "type": "org.springframework.orm.jpa.JpaTransactionManager",
  39.         "resource": "class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]",
  40.         "dependencies": [
  42.         ]
  43.       },
  44.       ...
  45.       {
  46.         "bean": "spring.devtools-org.springframework.boot.devtools.autoconfigure.DevToolsProperties",
  47.         "aliases": [
  49.         ],
  50.         "scope": "singleton",
  51.         "type": "org.springframework.boot.devtools.autoconfigure.DevToolsProperties",
  52.         "resource": "null",
  53.         "dependencies": [
  55.         ]
  56.       },
  57.       {
  58.         "bean": "org.springframework.orm.jpa.SharedEntityManagerCreator#0",
  59.         "aliases": [
  61.         ],
  62.         "scope": "singleton",
  63.         "type": "com.sun.proxy.$Proxy86",
  64.         "resource": "null",
  65.         "dependencies": [
  66.           "entityManagerFactory"
  67.         ]
  68.       }
  69.     ]
  70.   }
  71. ]

可以看出，我们一行代码还没写，只是加了几行配置，SpringBoot已经自动配置初始化了这么多的Bean。我们再访问 http://127.0.0.1:8000/application/health 

  1. {
  2.   "status": "UP",
  3.   "diskSpace": {
  4.     "status": "UP",
  5.     "total": 120108089344,
  6.     "free": 1724157952,
  7.     "threshold": 10485760
  8.   },
  9.   "db": {
  10.     "status": "UP",
  11.     "database": "MySQL",
  12.     "hello": 1
  13.   }
  14. }

从上面我们可以看到一些应用的健康状态信息，例如：应用状态、磁盘空间、数据库状态等信息。