【开箱即用】SpringBoot报- @ConditionalOnClass found required class 'XXXX'

linwd
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SpringBoot-@Conditional注解及自动配置

SpringBoot 项目启动 @SpringBootApplication使用了以下依赖：

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

项目启动，发现一直报@ConditionalOnClass found required class 'XXXX'，后来经过排查，是因为缺少了web的依赖包：

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

为什么会有这种现象产生呢？ 经过了自己的一段思索，以下是自己的个人看法，如果写的不好，欢迎大家来评论，纠正我的错误见解：

我们先说下 SpringBoot项目的启动原理

问题

  1. SpringBoot启动是如何流转的.
  2. 什么叫做开箱即用,springBoot中如何实现开箱即用的.

什么是“开箱即用”：

如果需要引入第三方的"工具/功能",只需要经过少量的配置/或者不做任何配置.则就可以使用该功能

启动项说明：

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <!--springBoot启动项内部的jar包文件已经将配置准备完成,用户
        只需要导入jar包就可以获取其功能.
        starter-web  直接引入了SpringMVC框架
        传统mvc框架配置:
                1.导入特定的jar包及版本.
                2.编辑web.xml配置 dispatcherServler  拦截路径
                3.配置mvc的配置文件  包扫描  视图解析器....
        -->
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

SpringBoot启动加载过程

1.png

元注解

@Target(ElementType.TYPE) 对哪个元素有效 对类有效 @Retention(RetentionPolicy.RUNTIME) 什么时候起作用 运行期有效 @Documented 是否支持生成文档 @Inherited 该注解是否可以被继承.

@SpringBootConfiguration

作用是：标识主启动类是一个大型的配置文件,启动时会加载所有的小的配置文件

@Configuration: 表示该类是一个配置类

excludeFilters

在springboot容器启动时,不需要加载某些过滤器.由于parent标签中定义了所有的关联的jar包文件信息.则启动时有可能导致意外的发生,所有需要提前剔除.

@(excludeFilteComponentScanrs = { @Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter.class), @Filter(type = FilterType.CUSTOM, classes = AutoConfigurationExcludeFilter.class) })

@AutoConfigurationPackage

作用是：当程序启动时,会根据主启动类的包路径,扫描其子孙包,所以springboot以后写代码时应该在其子孙包下编辑.

@AutoConfigurationImportSelector（选择器）

作用是：该配置中内部集成了所有的SpringBoot中的选择器.这些选择器的主要的任务就是查看是否有自己选择器所管理的启动项的配置. 如果发现该启动项,那么选择器就会执行该启动项,从而实现了开箱即用的操作

============================
CONDITIONS EVALUATION REPORT
============================
 
 
Positive matches:
-----------------
 
   AopAutoConfiguration matched:
      - @ConditionalOnProperty (spring.aop.auto=true) matched (OnPropertyCondition)
 
   AopAutoConfiguration.ClassProxyingConfiguration matched:
      - @ConditionalOnMissingClass did not find unwanted class 'org.aspectj.weaver.Advice' (OnClassCondition)
      - @ConditionalOnProperty (spring.aop.proxy-target-class=true) matched (OnPropertyCondition)
 
   DispatcherServletAutoConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.web.servlet.DispatcherServlet' (OnClassCondition)
      - found 'session' scope (OnWebApplicationCondition)
 
   DispatcherServletAutoConfiguration.DispatcherServletConfiguration matched:
      - @ConditionalOnClass found required class 'javax.servlet.ServletRegistration' (OnClassCondition)
      - Default DispatcherServlet did not find dispatcher servlet beans (DispatcherServletAutoConfiguration.DefaultDispatcherServletCondition)
 
   DispatcherServletAutoConfiguration.DispatcherServletRegistrationConfiguration matched:
      - @ConditionalOnClass found required class 'javax.servlet.ServletRegistration' (OnClassCondition)
      - DispatcherServlet Registration did not find servlet registration bean (DispatcherServletAutoConfiguration.DispatcherServletRegistrationCondition)
 
   DispatcherServletAutoConfiguration.DispatcherServletRegistrationConfiguration#dispatcherServletRegistration matched:
      - @ConditionalOnBean (names: dispatcherServlet types: org.springframework.web.servlet.DispatcherServlet; SearchStrategy: all) found bean 'dispatcherServlet' (OnBeanCondition)
 
   EmbeddedWebServerFactoryCustomizerAutoConfiguration matched:
      - @ConditionalOnWebApplication (required) found 'session' scope (OnWebApplicationCondition)
 
   EmbeddedWebServerFactoryCustomizerAutoConfiguration.TomcatWebServerFactoryCustomizerConfiguration matched:
      - @ConditionalOnClass found required classes 'org.apache.catalina.startup.Tomcat', 'org.apache.coyote.UpgradeProtocol' (OnClassCondition)
 
   ErrorMvcAutoConfiguration matched:
      - @ConditionalOnClass found required classes 'javax.servlet.Servlet', 'org.springframework.web.servlet.DispatcherServlet' (OnClassCondition)
      - found 'session' scope (OnWebApplicationCondition)
 
   ErrorMvcAutoConfiguration#basicErrorController matched:
      - @ConditionalOnMissingBean (types: org.springframework.boot.web.servlet.error.ErrorController; SearchStrategy: current) did not find any beans (OnBeanCondition)
 
   ErrorMvcAutoConfiguration#errorAttributes matched:
      - @ConditionalOnMissingBean (types: org.springframework.boot.web.servlet.error.ErrorAttributes; SearchStrategy: current) did not find any beans (OnBeanCondition)
 
   ErrorMvcAutoConfiguration.DefaultErrorViewResolverConfiguration#conventionErrorViewResolver matched:
      - @ConditionalOnBean (types: org.springframework.web.servlet.DispatcherServlet; SearchStrategy: all) found bean 'dispatcherServlet'; @ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.web.servlet.error.ErrorViewResolver; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   ErrorMvcAutoConfiguration.WhitelabelErrorViewConfiguration matched:
      - @ConditionalOnProperty (server.error.whitelabel.enabled) matched (OnPropertyCondition)
      - ErrorTemplate Missing did not find error template view (ErrorMvcAutoConfiguration.ErrorTemplateMissingCondition)
 
   ErrorMvcAutoConfiguration.WhitelabelErrorViewConfiguration#beanNameViewResolver matched:
      - @ConditionalOnMissingBean (types: org.springframework.web.servlet.view.BeanNameViewResolver; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   ErrorMvcAutoConfiguration.WhitelabelErrorViewConfiguration#defaultErrorView matched:
      - @ConditionalOnMissingBean (names: error; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   GenericCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.GenericCacheConfiguration automatic cache type (CacheCondition)
 
   HttpEncodingAutoConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.web.filter.CharacterEncodingFilter' (OnClassCondition)
      - found 'session' scope (OnWebApplicationCondition)
      - @ConditionalOnProperty (server.servlet.encoding.enabled) matched (OnPropertyCondition)
 
   HttpEncodingAutoConfiguration#characterEncodingFilter matched:
      - @ConditionalOnMissingBean (types: org.springframework.web.filter.CharacterEncodingFilter; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   HttpMessageConvertersAutoConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.http.converter.HttpMessageConverter' (OnClassCondition)
      - NoneNestedConditions 0 matched 1 did not; NestedCondition on HttpMessageConvertersAutoConfiguration.NotReactiveWebApplicationCondition.ReactiveWebApplication did not find reactive web application classes (HttpMessageConvertersAutoConfiguration.NotReactiveWebApplicationCondition)
 
   HttpMessageConvertersAutoConfiguration#messageConverters matched:
      - @ConditionalOnMissingBean (types: org.springframework.boot.autoconfigure.http.HttpMessageConverters; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   HttpMessageConvertersAutoConfiguration.StringHttpMessageConverterConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.http.converter.StringHttpMessageConverter' (OnClassCondition)
 
   HttpMessageConvertersAutoConfiguration.StringHttpMessageConverterConfiguration#stringHttpMessageConverter matched:
      - @ConditionalOnMissingBean (types: org.springframework.http.converter.StringHttpMessageConverter; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   JacksonAutoConfiguration matched:
      - @ConditionalOnClass found required class 'com.fasterxml.jackson.databind.ObjectMapper' (OnClassCondition)
 
   JacksonAutoConfiguration.Jackson2ObjectMapperBuilderCustomizerConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.http.converter.json.Jackson2ObjectMapperBuilder' (OnClassCondition)
 
   JacksonAutoConfiguration.JacksonObjectMapperBuilderConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.http.converter.json.Jackson2ObjectMapperBuilder' (OnClassCondition)
 
   JacksonAutoConfiguration.JacksonObjectMapperBuilderConfiguration#jacksonObjectMapperBuilder matched:
      - @ConditionalOnMissingBean (types: org.springframework.http.converter.json.Jackson2ObjectMapperBuilder; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   JacksonAutoConfiguration.JacksonObjectMapperConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.http.converter.json.Jackson2ObjectMapperBuilder' (OnClassCondition)
 
   JacksonAutoConfiguration.JacksonObjectMapperConfiguration#jacksonObjectMapper matched:
      - @ConditionalOnMissingBean (types: com.fasterxml.jackson.databind.ObjectMapper; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   JacksonAutoConfiguration.ParameterNamesModuleConfiguration matched:
      - @ConditionalOnClass found required class 'com.fasterxml.jackson.module.paramnames.ParameterNamesModule' (OnClassCondition)
 
   JacksonAutoConfiguration.ParameterNamesModuleConfiguration#parameterNamesModule matched:
      - @ConditionalOnMissingBean (types: com.fasterxml.jackson.module.paramnames.ParameterNamesModule; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   JacksonHttpMessageConvertersConfiguration.MappingJackson2HttpMessageConverterConfiguration matched:
      - @ConditionalOnClass found required class 'com.fasterxml.jackson.databind.ObjectMapper' (OnClassCondition)
      - @ConditionalOnProperty (spring.mvc.converters.preferred-json-mapper=jackson) matched (OnPropertyCondition)
      - @ConditionalOnBean (types: com.fasterxml.jackson.databind.ObjectMapper; SearchStrategy: all) found bean 'jacksonObjectMapper' (OnBeanCondition)
 
   JacksonHttpMessageConvertersConfiguration.MappingJackson2HttpMessageConverterConfiguration#mappingJackson2HttpMessageConverter matched:
      - @ConditionalOnMissingBean (types: org.springframework.http.converter.json.MappingJackson2HttpMessageConverter ignored: org.springframework.hateoas.server.mvc.TypeConstrainedMappingJackson2HttpMessageConverter,org.springframework.data.rest.webmvc.alps.AlpsJsonHttpMessageConverter; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   LifecycleAutoConfiguration#defaultLifecycleProcessor matched:
      - @ConditionalOnMissingBean (names: lifecycleProcessor; SearchStrategy: current) did not find any beans (OnBeanCondition)
 
   MultipartAutoConfiguration matched:
      - @ConditionalOnClass found required classes 'javax.servlet.Servlet', 'org.springframework.web.multipart.support.StandardServletMultipartResolver', 'javax.servlet.MultipartConfigElement' (OnClassCondition)
      - found 'session' scope (OnWebApplicationCondition)
      - @ConditionalOnProperty (spring.servlet.multipart.enabled) matched (OnPropertyCondition)
 
   MultipartAutoConfiguration#multipartConfigElement matched:
      - @ConditionalOnMissingBean (types: javax.servlet.MultipartConfigElement,org.springframework.web.multipart.commons.CommonsMultipartResolver; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   MultipartAutoConfiguration#multipartResolver matched:
      - @ConditionalOnMissingBean (types: org.springframework.web.multipart.MultipartResolver; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   NoOpCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.NoOpCacheConfiguration automatic cache type (CacheCondition)
 
   PropertyPlaceholderAutoConfiguration#propertySourcesPlaceholderConfigurer matched:
      - @ConditionalOnMissingBean (types: org.springframework.context.support.PropertySourcesPlaceholderConfigurer; SearchStrategy: current) did not find any beans (OnBeanCondition)
 
   RestTemplateAutoConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.web.client.RestTemplate' (OnClassCondition)
      - NoneNestedConditions 0 matched 1 did not; NestedCondition on RestTemplateAutoConfiguration.NotReactiveWebApplicationCondition.ReactiveWebApplication did not find reactive web application classes (RestTemplateAutoConfiguration.NotReactiveWebApplicationCondition)
 
   RestTemplateAutoConfiguration#restTemplateBuilder matched:
      - @ConditionalOnMissingBean (types: org.springframework.boot.web.client.RestTemplateBuilder; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   ServletWebServerFactoryAutoConfiguration matched:
      - @ConditionalOnClass found required class 'javax.servlet.ServletRequest' (OnClassCondition)
      - found 'session' scope (OnWebApplicationCondition)
 
   ServletWebServerFactoryAutoConfiguration#tomcatServletWebServerFactoryCustomizer matched:
      - @ConditionalOnClass found required class 'org.apache.catalina.startup.Tomcat' (OnClassCondition)
 
   ServletWebServerFactoryConfiguration.EmbeddedTomcat matched:
      - @ConditionalOnClass found required classes 'javax.servlet.Servlet', 'org.apache.catalina.startup.Tomcat', 'org.apache.coyote.UpgradeProtocol' (OnClassCondition)
      - @ConditionalOnMissingBean (types: org.springframework.boot.web.servlet.server.ServletWebServerFactory; SearchStrategy: current) did not find any beans (OnBeanCondition)
 
   SimpleCacheConfiguration matched:
      - Cache org.springframework.boot.autoconfigure.cache.SimpleCacheConfiguration automatic cache type (CacheCondition)
 
   TaskExecutionAutoConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor' (OnClassCondition)
 
   TaskExecutionAutoConfiguration#applicationTaskExecutor matched:
      - @ConditionalOnMissingBean (types: java.util.concurrent.Executor; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   TaskExecutionAutoConfiguration#taskExecutorBuilder matched:
      - @ConditionalOnMissingBean (types: org.springframework.boot.task.TaskExecutorBuilder; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   TaskSchedulingAutoConfiguration matched:
      - @ConditionalOnClass found required class 'org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler' (OnClassCondition)
 
   TaskSchedulingAutoConfiguration#taskSchedulerBuilder matched:
      - @ConditionalOnMissingBean (types: org.springframework.boot.task.TaskSchedulerBuilder; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   WebMvcAutoConfiguration matched:
      - @ConditionalOnClass found required classes 'javax.servlet.Servlet', 'org.springframework.web.servlet.DispatcherServlet', 'org.springframework.web.servlet.config.annotation.WebMvcConfigurer' (OnClassCondition)
      - found 'session' scope (OnWebApplicationCondition)
      - @ConditionalOnMissingBean (types: org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   WebMvcAutoConfiguration#formContentFilter matched:
      - @ConditionalOnProperty (spring.mvc.formcontent.filter.enabled) matched (OnPropertyCondition)
      - @ConditionalOnMissingBean (types: org.springframework.web.filter.FormContentFilter; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#defaultViewResolver matched:
      - @ConditionalOnMissingBean (types: org.springframework.web.servlet.view.InternalResourceViewResolver; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#requestContextFilter matched:
      - @ConditionalOnMissingBean (types: org.springframework.web.context.request.RequestContextListener,org.springframework.web.filter.RequestContextFilter; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#viewResolver matched:
      - @ConditionalOnBean (types: org.springframework.web.servlet.ViewResolver; SearchStrategy: all) found beans 'defaultViewResolver', 'beanNameViewResolver', 'mvcViewResolver'; @ConditionalOnMissingBean (names: viewResolver types: org.springframework.web.servlet.view.ContentNegotiatingViewResolver; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
   WebSocketServletAutoConfiguration matched:
      - @ConditionalOnClass found required classes 'javax.servlet.Servlet', 'javax.websocket.server.ServerContainer' (OnClassCondition)
      - found 'session' scope (OnWebApplicationCondition)
 
   WebSocketServletAutoConfiguration.TomcatWebSocketConfiguration matched:
      - @ConditionalOnClass found required classes 'org.apache.catalina.startup.Tomcat', 'org.apache.tomcat.websocket.server.WsSci' (OnClassCondition)
 
   WebSocketServletAutoConfiguration.TomcatWebSocketConfiguration#websocketServletWebServerCustomizer matched:
      - @ConditionalOnMissingBean (names: websocketServletWebServerCustomizer; SearchStrategy: all) did not find any beans (OnBeanCondition)
 
 
Negative matches:
-----------------
 
   ActiveMQAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.jms.ConnectionFactory' (OnClassCondition)
 
   AopAutoConfiguration.AspectJAutoProxyingConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.aspectj.weaver.Advice' (OnClassCondition)
 
   ArtemisAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.jms.ConnectionFactory' (OnClassCondition)
 
   BatchAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.batch.core.launch.JobLauncher' (OnClassCondition)
 
   CacheAutoConfiguration:
      Did not match:
         - @ConditionalOnBean (types: org.springframework.cache.interceptor.CacheAspectSupport; SearchStrategy: all) did not find any beans of type org.springframework.cache.interceptor.CacheAspectSupport (OnBeanCondition)
      Matched:
         - @ConditionalOnClass found required class 'org.springframework.cache.CacheManager' (OnClassCondition)
 
   CacheAutoConfiguration.CacheManagerEntityManagerFactoryDependsOnPostProcessor:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean' (OnClassCondition)
         - Ancestor org.springframework.boot.autoconfigure.cache.CacheAutoConfiguration did not match (ConditionEvaluationReport.AncestorsMatchedCondition)
 
   CaffeineCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.github.benmanes.caffeine.cache.Caffeine' (OnClassCondition)
 
   CassandraAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.datastax.oss.driver.api.core.CqlSession' (OnClassCondition)
 
   CassandraDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.datastax.oss.driver.api.core.CqlSession' (OnClassCondition)
 
   CassandraReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.datastax.oss.driver.api.core.CqlSession' (OnClassCondition)
 
   CassandraReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.cassandra.ReactiveSession' (OnClassCondition)
 
   CassandraRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.datastax.oss.driver.api.core.CqlSession' (OnClassCondition)
 
   ClientHttpConnectorAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.function.client.WebClient' (OnClassCondition)
 
   CodecsAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.function.client.WebClient' (OnClassCondition)
 
   CouchbaseAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.couchbase.client.java.Cluster' (OnClassCondition)
 
   CouchbaseCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.couchbase.client.java.Cluster' (OnClassCondition)
 
   CouchbaseDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.couchbase.client.java.Bucket' (OnClassCondition)
 
   CouchbaseReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.couchbase.client.java.Cluster' (OnClassCondition)
 
   CouchbaseReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.couchbase.client.java.Cluster' (OnClassCondition)
 
   CouchbaseRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.couchbase.client.java.Bucket' (OnClassCondition)
 
   DataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition)
 
   DataSourceTransactionManagerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.core.JdbcTemplate' (OnClassCondition)
 
   DispatcherServletAutoConfiguration.DispatcherServletConfiguration#multipartResolver:
      Did not match:
         - @ConditionalOnBean (types: org.springframework.web.multipart.MultipartResolver; SearchStrategy: all) did not find any beans of type org.springframework.web.multipart.MultipartResolver (OnBeanCondition)
 
   EhCacheCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'net.sf.ehcache.Cache' (OnClassCondition)
 
   ElasticsearchDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.elasticsearch.core.ElasticsearchTemplate' (OnClassCondition)
 
   ElasticsearchRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.elasticsearch.client.Client' (OnClassCondition)
 
   ElasticsearchRestClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.elasticsearch.client.RestClient' (OnClassCondition)
 
   EmbeddedLdapAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.unboundid.ldap.listener.InMemoryDirectoryServer' (OnClassCondition)
 
   EmbeddedMongoAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.MongoClientSettings' (OnClassCondition)
 
   EmbeddedWebServerFactoryCustomizerAutoConfiguration.JettyWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.eclipse.jetty.server.Server', 'org.eclipse.jetty.util.Loader', 'org.eclipse.jetty.webapp.WebAppContext' (OnClassCondition)
 
   EmbeddedWebServerFactoryCustomizerAutoConfiguration.NettyWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'reactor.netty.http.server.HttpServer' (OnClassCondition)
 
   EmbeddedWebServerFactoryCustomizerAutoConfiguration.UndertowWebServerFactoryCustomizerConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required classes 'io.undertow.Undertow', 'org.xnio.SslClientAuthMode' (OnClassCondition)
 
   ErrorWebFluxAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.config.WebFluxConfigurer' (OnClassCondition)
 
   FlywayAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.flywaydb.core.Flyway' (OnClassCondition)
 
   FreeMarkerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'freemarker.template.Configuration' (OnClassCondition)
 
   GroovyTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'groovy.text.markup.MarkupTemplateEngine' (OnClassCondition)
 
   GsonAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.google.gson.Gson' (OnClassCondition)
 
   GsonHttpMessageConvertersConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.google.gson.Gson' (OnClassCondition)
 
   H2ConsoleAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.h2.server.web.WebServlet' (OnClassCondition)
 
   HazelcastAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.hazelcast.core.HazelcastInstance' (OnClassCondition)
 
   HazelcastCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.hazelcast.core.HazelcastInstance' (OnClassCondition)
 
   HazelcastJpaDependencyAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.hazelcast.core.HazelcastInstance' (OnClassCondition)
 
   HibernateJpaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.persistence.EntityManager' (OnClassCondition)
 
   HttpHandlerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.DispatcherHandler' (OnClassCondition)
 
   HypermediaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.hateoas.EntityModel' (OnClassCondition)
 
   InfinispanCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.infinispan.spring.embedded.provider.SpringEmbeddedCacheManager' (OnClassCondition)
 
   InfluxDbAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.influxdb.InfluxDB' (OnClassCondition)
 
   IntegrationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.integration.config.EnableIntegration' (OnClassCondition)
 
   JCacheCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.cache.Caching' (OnClassCondition)
 
   JacksonHttpMessageConvertersConfiguration.MappingJackson2XmlHttpMessageConverterConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.fasterxml.jackson.dataformat.xml.XmlMapper' (OnClassCondition)
 
   JdbcRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.jdbc.repository.config.AbstractJdbcConfiguration' (OnClassCondition)
 
   JdbcTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.core.JdbcTemplate' (OnClassCondition)
 
   JerseyAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.glassfish.jersey.server.spring.SpringComponentProvider' (OnClassCondition)
 
   JmsAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.jms.Message' (OnClassCondition)
 
   JmxAutoConfiguration:
      Did not match:
         - @ConditionalOnProperty (spring.jmx.enabled=true) did not find property 'enabled' (OnPropertyCondition)
      Matched:
         - @ConditionalOnClass found required class 'org.springframework.jmx.export.MBeanExporter' (OnClassCondition)
 
   JndiConnectionFactoryAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jms.core.JmsTemplate' (OnClassCondition)
 
   JndiDataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType' (OnClassCondition)
 
   JooqAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.jooq.DSLContext' (OnClassCondition)
 
   JpaRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.jpa.repository.JpaRepository' (OnClassCondition)
 
   JsonbAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.json.bind.Jsonb' (OnClassCondition)
 
   JsonbHttpMessageConvertersConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.json.bind.Jsonb' (OnClassCondition)
 
   JtaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.transaction.Transaction' (OnClassCondition)
 
   KafkaAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.kafka.core.KafkaTemplate' (OnClassCondition)
 
   LdapAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.ldap.core.ContextSource' (OnClassCondition)
 
   LdapRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.ldap.repository.LdapRepository' (OnClassCondition)
 
   LiquibaseAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'liquibase.change.DatabaseChange' (OnClassCondition)
 
   MailSenderAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.mail.internet.MimeMessage' (OnClassCondition)
 
   MailSenderValidatorAutoConfiguration:
      Did not match:
         - @ConditionalOnSingleCandidate did not find required type 'org.springframework.mail.javamail.JavaMailSenderImpl' (OnBeanCondition)
 
   MessageSourceAutoConfiguration:
      Did not match:
         - ResourceBundle did not find bundle with basename messages (MessageSourceAutoConfiguration.ResourceBundleCondition)
 
   MongoAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.client.MongoClient' (OnClassCondition)
 
   MongoDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.client.MongoClient' (OnClassCondition)
 
   MongoReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.reactivestreams.client.MongoClient' (OnClassCondition)
 
   MongoReactiveDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.reactivestreams.client.MongoClient' (OnClassCondition)
 
   MongoReactiveRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.reactivestreams.client.MongoClient' (OnClassCondition)
 
   MongoRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.mongodb.client.MongoClient' (OnClassCondition)
 
   MustacheAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.samskivert.mustache.Mustache' (OnClassCondition)
 
   Neo4jDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.neo4j.ogm.session.SessionFactory' (OnClassCondition)
 
   Neo4jRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.neo4j.ogm.session.Neo4jSession' (OnClassCondition)
 
   OAuth2ClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.config.annotation.web.configuration.EnableWebSecurity' (OnClassCondition)
 
   OAuth2ResourceServerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.oauth2.server.resource.BearerTokenAuthenticationToken' (OnClassCondition)
 
   PersistenceExceptionTranslationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor' (OnClassCondition)
 
   ProjectInfoAutoConfiguration#buildProperties:
      Did not match:
         - @ConditionalOnResource did not find resource '${spring.info.build.location:classpath:META-INF/build-info.properties}' (OnResourceCondition)
 
   ProjectInfoAutoConfiguration#gitProperties:
      Did not match:
         - GitResource did not find git info at classpath:git.properties (ProjectInfoAutoConfiguration.GitResourceAvailableCondition)
 
   QuartzAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.quartz.Scheduler' (OnClassCondition)
 
   R2dbcAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.r2dbc.spi.ConnectionFactory' (OnClassCondition)
 
   R2dbcDataAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.r2dbc.core.DatabaseClient' (OnClassCondition)
 
   R2dbcRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.r2dbc.spi.ConnectionFactory' (OnClassCondition)
 
   R2dbcTransactionManagerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.r2dbc.connectionfactory.R2dbcTransactionManager' (OnClassCondition)
 
   RSocketMessagingAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.rsocket.RSocketFactory' (OnClassCondition)
 
   RSocketRequesterAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.rsocket.RSocketFactory' (OnClassCondition)
 
   RSocketSecurityAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.rsocket.core.SecuritySocketAcceptorInterceptor' (OnClassCondition)
 
   RSocketServerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.rsocket.core.RSocketServer' (OnClassCondition)
 
   RSocketStrategiesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.netty.buffer.PooledByteBufAllocator' (OnClassCondition)
 
   RabbitAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.rabbitmq.client.Channel' (OnClassCondition)
 
   ReactiveElasticsearchRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.elasticsearch.client.reactive.ReactiveElasticsearchClient' (OnClassCondition)
 
   ReactiveElasticsearchRestClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'reactor.netty.http.client.HttpClient' (OnClassCondition)
 
   ReactiveOAuth2ClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'reactor.core.publisher.Flux' (OnClassCondition)
 
   ReactiveOAuth2ResourceServerAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity' (OnClassCondition)
 
   ReactiveSecurityAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'reactor.core.publisher.Flux' (OnClassCondition)
 
   ReactiveUserDetailsServiceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.ReactiveAuthenticationManager' (OnClassCondition)
 
   ReactiveWebServerFactoryAutoConfiguration:
      Did not match:
         - @ConditionalOnWebApplication did not find reactive web application classes (OnWebApplicationCondition)
 
   RedisAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.redis.core.RedisOperations' (OnClassCondition)
 
   RedisCacheConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.redis.connection.RedisConnectionFactory' (OnClassCondition)
 
   RedisReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'reactor.core.publisher.Flux' (OnClassCondition)
 
   RedisRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.redis.repository.configuration.EnableRedisRepositories' (OnClassCondition)
 
   RepositoryRestMvcAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.rest.webmvc.config.RepositoryRestMvcConfiguration' (OnClassCondition)
 
   Saml2RelyingPartyAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.saml2.provider.service.registration.RelyingPartyRegistrationRepository' (OnClassCondition)
 
   SecurityAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.DefaultAuthenticationEventPublisher' (OnClassCondition)
 
   SecurityFilterAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.config.http.SessionCreationPolicy' (OnClassCondition)
 
   SendGridAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'com.sendgrid.SendGrid' (OnClassCondition)
 
   ServletWebServerFactoryAutoConfiguration#forwardedHeaderFilter:
      Did not match:
         - @ConditionalOnProperty (server.forward-headers-strategy=framework) did not find property 'server.forward-headers-strategy' (OnPropertyCondition)
 
   ServletWebServerFactoryConfiguration.EmbeddedJetty:
      Did not match:
         - @ConditionalOnClass did not find required classes 'org.eclipse.jetty.server.Server', 'org.eclipse.jetty.util.Loader', 'org.eclipse.jetty.webapp.WebAppContext' (OnClassCondition)
 
   ServletWebServerFactoryConfiguration.EmbeddedUndertow:
      Did not match:
         - @ConditionalOnClass did not find required classes 'io.undertow.Undertow', 'org.xnio.SslClientAuthMode' (OnClassCondition)
 
   SessionAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.session.Session' (OnClassCondition)
 
   SolrAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.apache.solr.client.solrj.impl.CloudSolrClient' (OnClassCondition)
 
   SolrRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.apache.solr.client.solrj.SolrClient' (OnClassCondition)
 
   SpringApplicationAdminJmxAutoConfiguration:
      Did not match:
         - @ConditionalOnProperty (spring.application.admin.enabled=true) did not find property 'enabled' (OnPropertyCondition)
 
   SpringDataWebAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.data.web.PageableHandlerMethodArgumentResolver' (OnClassCondition)
 
   TaskSchedulingAutoConfiguration#taskScheduler:
      Did not match:
         - @ConditionalOnBean (names: org.springframework.context.annotation.internalScheduledAnnotationProcessor; SearchStrategy: all) did not find any beans named org.springframework.context.annotation.internalScheduledAnnotationProcessor (OnBeanCondition)
 
   ThymeleafAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.thymeleaf.spring5.SpringTemplateEngine' (OnClassCondition)
 
   TransactionAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.transaction.PlatformTransactionManager' (OnClassCondition)
 
   UserDetailsServiceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.security.authentication.AuthenticationManager' (OnClassCondition)
 
   ValidationAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.validation.executable.ExecutableValidator' (OnClassCondition)
 
   WebClientAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.function.client.WebClient' (OnClassCondition)
 
   WebFluxAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.reactive.config.WebFluxConfigurer' (OnClassCondition)
 
   WebMvcAutoConfiguration#hiddenHttpMethodFilter:
      Did not match:
         - @ConditionalOnProperty (spring.mvc.hiddenmethod.filter.enabled) did not find property 'enabled' (OnPropertyCondition)
 
   WebMvcAutoConfiguration.ResourceChainCustomizerConfiguration:
      Did not match:
         - @ConditionalOnEnabledResourceChain did not find class org.webjars.WebJarAssetLocator (OnEnabledResourceChainCondition)
 
   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#beanNameViewResolver:
      Did not match:
         - @ConditionalOnMissingBean (types: org.springframework.web.servlet.view.BeanNameViewResolver; SearchStrategy: all) found beans of type 'org.springframework.web.servlet.view.BeanNameViewResolver' beanNameViewResolver (OnBeanCondition)
 
   WebMvcAutoConfiguration.WebMvcAutoConfigurationAdapter#localeResolver:
      Did not match:
         - @ConditionalOnProperty (spring.mvc.locale) did not find property 'locale' (OnPropertyCondition)
 
   WebServiceTemplateAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.oxm.Marshaller' (OnClassCondition)
 
   WebServicesAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.ws.transport.http.MessageDispatcherServlet' (OnClassCondition)
 
   WebSocketMessagingAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer' (OnClassCondition)
 
   WebSocketReactiveAutoConfiguration:
      Did not match:
         - @ConditionalOnWebApplication did not find reactive web application classes (OnWebApplicationCondition)
 
   WebSocketServletAutoConfiguration.JettyWebSocketConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'org.eclipse.jetty.websocket.jsr356.server.deploy.WebSocketServerContainerInitializer' (OnClassCondition)
 
   WebSocketServletAutoConfiguration.UndertowWebSocketConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'io.undertow.websockets.jsr.Bootstrap' (OnClassCondition)
 
   XADataSourceAutoConfiguration:
      Did not match:
         - @ConditionalOnClass did not find required class 'javax.transaction.TransactionManager' (OnClassCondition)
 
 
Exclusions:
-----------
 
    None
 
 
Unconditional classes:
----------------------
 
    org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration
 
    org.springframework.boot.autoconfigure.context.LifecycleAutoConfiguration
 
    org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration
 
    org.springframework.boot.autoconfigure.availability.ApplicationAvailabilityAutoConfiguration
 
    org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration

@ComponentScan

组件扫描，可自动发现和装配Bean，默认扫描SpringApplication的run方法里的Booter.class所在的包路径下文件，所以最好将该启动类放到根包路径下

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