1.1.1. Starter pom
除了官方也有其他第三方提供的starter
Websocket是服务端推数据到客户端。长连接。 1.1.1.Xml 配置文件 有些时候必须使用xml配置。
1.1.1.日志 Spring Boot对各种日志框架都做了支持，我们可以通过配置来修改默认的日志的配置： #设置日志级别 logging.level.org.springframework=DEBUG 格式： logging.level.*= # Log levels severity mapping. For instance `logging.level.org.springframework=DEBUG` 1.2.Spring Boot的自动配置的原理 Spring Boot在进行SpringApplication对象实例化时会加载META-INF/spring.factories文件，将该配置文件中的配置载入到Spring容器。Spring-boot1.4.5.RELEASE.jarMETA-INFspring.factores。在spring.factores这个配置文件中配置了一系列的内容，通过代码读取这个配置文件中的内容，然后做一系列的实例化，然后只要加入某些功能就会自动完成配置。 1.2.1.Maven下载源码 通过 dependency:sources 该命令可以下载该项目中所有的依赖的包的源码。 1.2.2.源码分析 org.springframework.boot.SpringApplication：
org.springframework.core.io.support.SpringFactoriesLoader:
由此可见，读取该配置文件来加载内容。 1.1.1.Spring.factories文件 # Initializers org.springframework.context.ApplicationContextInitializer= org.springframework.boot.autoconfigure.SharedMetadataReaderFactoryContextInitializer, org.springframework.boot.autoconfigure.logging.AutoConfigurationReportLoggingInitializer # Application Listeners org.springframework.context.ApplicationListener= org.springframework.boot.autoconfigure.BackgroundPreinitializer # Auto Configuration Import Listeners org.springframework.boot.autoconfigure.AutoConfigurationImportListener= org.springframework.boot.autoconfigure.condition.ConditionEvaluationReportAutoConfigurationImportListener # Auto Configuration Import Filters org.springframework.boot.autoconfigure.AutoConfigurationImportFilter= org.springframework.boot.autoconfigure.condition.OnClassCondition # Auto Configure org.springframework.boot.autoconfigure.EnableAutoConfiguration= org.springframework.boot.autoconfigure.admin.SpringApplicationAdminJmxAutoConfiguration, org.springframework.boot.autoconfigure.aop.AopAutoConfiguration, org.springframework.boot.autoconfigure.amqp.RabbitAutoConfiguration, org.springframework.boot.autoconfigure.batch.BatchAutoConfiguration, org.springframework.boot.autoconfigure.cache.CacheAutoConfiguration, org.springframework.boot.autoconfigure.cassandra.CassandraAutoConfiguration, org.springframework.boot.autoconfigure.cloud.CloudAutoConfiguration, org.springframework.boot.autoconfigure.context.ConfigurationPropertiesAutoConfiguration, org.springframework.boot.autoconfigure.context.MessageSourceAutoConfiguration, org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration, org.springframework.boot.autoconfigure.couchbase.CouchbaseAutoConfiguration, org.springframework.boot.autoconfigure.dao.PersistenceExceptionTranslationAutoConfiguration, org.springframework.boot.autoconfigure.data.cassandra.CassandraDataAutoConfiguration, org.springframework.boot.autoconfigure.data.cassandra.CassandraRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.couchbase.CouchbaseDataAutoConfiguration, org.springframework.boot.autoconfigure.data.couchbase.CouchbaseRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchAutoConfiguration, org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchDataAutoConfiguration, org.springframework.boot.autoconfigure.data.elasticsearch.ElasticsearchRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.jpa.JpaRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.ldap.LdapDataAutoConfiguration, org.springframework.boot.autoconfigure.data.ldap.LdapRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.mongo.MongoDataAutoConfiguration, org.springframework.boot.autoconfigure.data.mongo.MongoRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.neo4j.Neo4jDataAutoConfiguration, org.springframework.boot.autoconfigure.data.neo4j.Neo4jRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.solr.SolrRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration, org.springframework.boot.autoconfigure.data.redis.RedisRepositoriesAutoConfiguration, org.springframework.boot.autoconfigure.data.rest.RepositoryRestMvcAutoConfiguration, org.springframework.boot.autoconfigure.data.web.SpringDataWebAutoConfiguration, org.springframework.boot.autoconfigure.elasticsearch.jest.JestAutoConfiguration, org.springframework.boot.autoconfigure.freemarker.FreeMarkerAutoConfiguration, org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration, org.springframework.boot.autoconfigure.h2.H2ConsoleAutoConfiguration, org.springframework.boot.autoconfigure.hateoas.HypermediaAutoConfiguration, org.springframework.boot.autoconfigure.hazelcast.HazelcastAutoConfiguration, org.springframework.boot.autoconfigure.hazelcast.HazelcastJpaDependencyAutoConfiguration, org.springframework.boot.autoconfigure.info.ProjectInfoAutoConfiguration, org.springframework.boot.autoconfigure.integration.IntegrationAutoConfiguration, org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration, org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration, org.springframework.boot.autoconfigure.jdbc.JdbcTemplateAutoConfiguration, org.springframework.boot.autoconfigure.jdbc.JndiDataSourceAutoConfiguration, org.springframework.boot.autoconfigure.jdbc.XADataSourceAutoConfiguration, org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration, org.springframework.boot.autoconfigure.jms.JmsAutoConfiguration, org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration, org.springframework.boot.autoconfigure.jms.JndiConnectionFactoryAutoConfiguration, org.springframework.boot.autoconfigure.jms.activemq.ActiveMQAutoConfiguration, org.springframework.boot.autoconfigure.jms.artemis.ArtemisAutoConfiguration, org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration, org.springframework.boot.autoconfigure.groovy.template.GroovyTemplateAutoConfiguration, org.springframework.boot.autoconfigure.jersey.JerseyAutoConfiguration, org.springframework.boot.autoconfigure.jooq.JooqAutoConfiguration, org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration, org.springframework.boot.autoconfigure.ldap.embedded.EmbeddedLdapAutoConfiguration, org.springframework.boot.autoconfigure.ldap.LdapAutoConfiguration, org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration, org.springframework.boot.autoconfigure.mail.MailSenderAutoConfiguration, org.springframework.boot.autoconfigure.mail.MailSenderValidatorAutoConfiguration, org.springframework.boot.autoconfigure.mobile.DeviceResolverAutoConfiguration, org.springframework.boot.autoconfigure.mobile.DeviceDelegatingViewResolverAutoConfiguration, org.springframework.boot.autoconfigure.mobile.SitePreferenceAutoConfiguration, org.springframework.boot.autoconfigure.mongo.embedded.EmbeddedMongoAutoConfiguration, org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration, org.springframework.boot.autoconfigure.mustache.MustacheAutoConfiguration, org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration, org.springframework.boot.autoconfigure.reactor.ReactorAutoConfiguration, org.springframework.boot.autoconfigure.security.SecurityAutoConfiguration, org.springframework.boot.autoconfigure.security.SecurityFilterAutoConfiguration, org.springframework.boot.autoconfigure.security.FallbackWebSecurityAutoConfiguration, org.springframework.boot.autoconfigure.security.oauth2.OAuth2AutoConfiguration, org.springframework.boot.autoconfigure.sendgrid.SendGridAutoConfiguration, org.springframework.boot.autoconfigure.session.SessionAutoConfiguration, org.springframework.boot.autoconfigure.social.SocialWebAutoConfiguration, org.springframework.boot.autoconfigure.social.FacebookAutoConfiguration, org.springframework.boot.autoconfigure.social.LinkedInAutoConfiguration, org.springframework.boot.autoconfigure.social.TwitterAutoConfiguration, org.springframework.boot.autoconfigure.solr.SolrAutoConfiguration, org.springframework.boot.autoconfigure.thymeleaf.ThymeleafAutoConfiguration, org.springframework.boot.autoconfigure.transaction.TransactionAutoConfiguration, org.springframework.boot.autoconfigure.transaction.jta.JtaAutoConfiguration, org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration, org.springframework.boot.autoconfigure.web.DispatcherServletAutoConfiguration, org.springframework.boot.autoconfigure.web.EmbeddedServletContainerAutoConfiguration, org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration, org.springframework.boot.autoconfigure.web.HttpEncodingAutoConfiguration, org.springframework.boot.autoconfigure.web.HttpMessageConvertersAutoConfiguration, org.springframework.boot.autoconfigure.web.MultipartAutoConfiguration, org.springframework.boot.autoconfigure.web.ServerPropertiesAutoConfiguration, org.springframework.boot.autoconfigure.web.WebClientAutoConfiguration, org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration, org.springframework.boot.autoconfigure.websocket.WebSocketAutoConfiguration, org.springframework.boot.autoconfigure.websocket.WebSocketMessagingAutoConfiguration, org.springframework.boot.autoconfigure.webservices.WebServicesAutoConfiguration # Failure analyzers org.springframework.boot.diagnostics.FailureAnalyzer= org.springframework.boot.autoconfigure.diagnostics.analyzer.NoSuchBeanDefinitionFailureAnalyzer, org.springframework.boot.autoconfigure.jdbc.DataSourceBeanCreationFailureAnalyzer, org.springframework.boot.autoconfigure.jdbc.HikariDriverConfigurationFailureAnalyzer # Template availability providers org.springframework.boot.autoconfigure.template.TemplateAvailabilityProvider= org.springframework.boot.autoconfigure.freemarker.FreeMarkerTemplateAvailabilityProvider, org.springframework.boot.autoconfigure.mustache.MustacheTemplateAvailabilityProvider, org.springframework.boot.autoconfigure.groovy.template.GroovyTemplateAvailabilityProvider, org.springframework.boot.autoconfigure.thymeleaf.ThymeleafTemplateAvailabilityProvider, org.springframework.boot.autoconfigure.web.JspTemplateAvailabilityProvider
1.1.1.举例：Redis的自动配置
从上述的配置中可以看出，org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration是Redis的自动配置。
内容：
1.1.1. 条件注解
1. Spring Boot的web开发
Web开发的自动配置类：org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration
1.1. 自动配置的ViewResolver
视图的配置mvcProperties对象中：
org.springframework.boot.autoconfigure.web.WebMvcProperties.View
1.1. 自动配置静态资源
1.1.1. 进入规则为 /
如果进入SpringMVC的规则为/时，Spring Boot的默认静态资源的路径为：
spring.resources.static-locations=classpath:/META-INF/resources/,classpath:/resources/,classpath:/static/,classpath:/public/
测试：
1.1.1. 进入规则为*.xxx 或者 不指定静态文件路径时
将静态资源放置到webapp下的static目录中即可通过地址访问：
测试：
1.1.自定义消息转化器 自定义消息转化器，只需要在@Configuration的类中添加消息转化器的@bean加入到Spring容器，就会被Spring Boot自动加入到容器中。 @Bean public StringHttpMessageConverter stringHttpMessageConverter(){ StringHttpMessageConverter converter = new StringHttpMessageConverter(Charset.forName("UTF-8")); return converter; } 默认配置：
1.1.自定义SpringMVC的配置 有些时候我们需要自已配置SpringMVC而不是采用默认，比如说增加一个拦截器，这个时候就得通过继承WebMvcConfigurerAdapter然后重写父类中的方法进行扩展。 import java.nio.charset.Charset; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.context.annotation.Configuration; import org.springframework.http.converter.HttpMessageConverter; import org.springframework.http.converter.StringHttpMessageConverter; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; //这个类跟HelloApplication是同级目录，会扫描到，生效。 @Configuration //申明这是一个配置，加入到spring的容器。 public class MySrpingMVCConfig extends WebMvcConfigurerAdapter{ // 自定义拦截器，所有请求都拦截 @Override public void addInterceptors(InterceptorRegistry registry) { HandlerInterceptor handlerInterceptor = new HandlerInterceptor() { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println("自定义拦截器............"); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { } }; registry.addInterceptor(handlerInterceptor).addPathPatterns("/**"); } // 自定义消息转化器的第二种方法 @Override public void configureMessageConverters(List<HttpMessageConverter<?>> converters) { StringHttpMessageConverter converter = new StringHttpMessageConverter(Charset.forName("UTF-8")); converters.add(converter); } }