#这个小章节会通过一个小例子引出配置文件的说明

想通过这个章节来说一下配置文件，本来想直接贴属性对比的，觉得不人道，就加了个小例子，配置文件说明会在最后贴出

#链接数据库 Spring Boot链接数据库非常简单，自己默认使用的tomcat的pool，为了快速方便的展示，我这使用JPA进行操作，我并熟悉JPA，但是写个例子还是可以的，后续的章节会用mybaties

数据库依赖

            
                
     
      mysql
                 
     
      mysql-connector-java
                 
     
      5.1.32
             
            
            
                
     
      org.springframework.boot
                 
     
      spring-boot-starter-data-jpa
             
    

创建一个用户对象,去除了get/set需要自己加哦。

[@Entity](https://my.oschina.net/u/1260961)		@Table(name = "user")		public class User implements Serializable {				    private static final long serialVersionUID = 1614429926091283866L;				    @Id		    @GeneratedValue(strategy = GenerationType.IDENTITY)		    private Long id;				    private String userName;				    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")		    private Date  createDate;				}

写一个Dao接口

@Repository	public interface UserRepository extends JpaRepository
    
      {	}
    

写一个Controller

@RestController	public class UserCtrl {	    @Autowired	    UserRepository userRepository;		    @RequestMapping(value = "/inseruser")	    public User insertUser(){	        User user = new User();	        user.setUserName("user");	        user.setCreateDate(new Date());	        return userRepository.save(user);	    }	}

写JPA管理类

@Order(Ordered.HIGHEST_PRECEDENCE)	@Configuration	@EnableTransactionManagement(proxyTargetClass = true)	@EnableJpaRepositories(basePackages = "com.dzy.**.dao")	@EntityScan(basePackages = "com.dzy.**.model")	public class JpaConfigure {		    @Bean	    PersistenceAnnotationBeanPostProcessor persistenceAnnotationBeanPostProcessor(){	        return new PersistenceAnnotationBeanPostProcessor();	    }		}

配置文件SpringBoot配置文件可以使用传统的properties，也可以使用yml，如下就是yml

spring:	  datasource:	url: jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&autoReconnect=true&characterEncoding=utf8	username: root	password: root	  jpa:	database: mysql	show-sql: true	hibernate:	  ddl-auto: update	  naming:	strategy: org.hibernate.cfg.ImprovedNamingStrategy	properties:	  hibernate:	dialect: org.hibernate.dialect.MySQL5Dialect

这个时候可以启动工程，然后通过浏览器访问请求，请求成功

#简短的总结 上面是JPA链接数据库的简单列子，配置文件也是很简洁，SpringBoot的配置文件非常详细，文章最后会有一个比较全的配置文件方便大家搜索。 另外除了这篇之外，博主都会使用mybatis进行讲解，JPA仅仅在这个章节简单说明一下链接数据的配置，而且没有用连接池，后续都会有追加。

#SpringBoot全部的配置信息

# ===================================================================# COMMON SPRING BOOT PROPERTIES## This sample file is provided as a guideline. Do NOT copy it in its# entirety to your own application.               ^^^# ===================================================================# ----------------------------------------# CORE PROPERTIES# ----------------------------------------# SPRING CONFIG (ConfigFileApplicationListener)spring.config.name= # config file name (default to 'application')spring.config.location= # location of config file# PROFILESspring.profiles= # comma list of active profiles# APPLICATION SETTINGS (SpringApplication)spring.main.sources=spring.main.web-environment= # detect by defaultspring.main.show-banner=truespring.main....= # see class for all properties# LOGGINGlogging.path=/var/logslogging.file=myapp.loglogging.config=# IDENTITY (ContextIdApplicationContextInitializer)spring.application.name=spring.application.index=# EMBEDDED SERVER CONFIGURATION (ServerProperties)server.port=8080server.address= # bind to a specific NICserver.session-timeout= # session timeout in secondsserver.context-path= # the context path, defaults to '/'server.servlet-path= # the servlet path, defaults to '/'server.tomcat.access-log-pattern= # log pattern of the access logserver.tomcat.access-log-enabled=false # is access logging enabledserver.tomcat.protocol-header=x-forwarded-proto # ssl forward headersserver.tomcat.remote-ip-header=x-forwarded-forserver.tomcat.basedir=/tmp # base dir (usually not needed, defaults to tmp)server.tomcat.background-processor-delay=30; # in secondsserver.tomcat.max-threads = 0 # number of threads in protocol handlerserver.tomcat.uri-encoding = UTF-8 # character encoding to use for URL decoding# SPRING MVC (HttpMapperProperties)http.mappers.json-pretty-print=false # pretty print JSONhttp.mappers.json-sort-keys=false # sort keysspring.mvc.locale= # set fixed locale, e.g. en_UKspring.mvc.date-format= # set fixed date format, e.g. dd/MM/yyyyspring.mvc.message-codes-resolver-format= # PREFIX_ERROR_CODE / POSTFIX_ERROR_CODEspring.view.prefix= # MVC view prefixspring.view.suffix= # ... and suffixspring.resources.cache-period= # cache timeouts in headers sent to browserspring.resources.add-mappings=true # if default mappings should be added# THYMELEAF (ThymeleafAutoConfiguration)spring.thymeleaf.prefix=classpath:/templates/spring.thymeleaf.suffix=.htmlspring.thymeleaf.mode=HTML5spring.thymeleaf.encoding=UTF-8spring.thymeleaf.content-type=text/html # ;charset=
    
      is addedspring.thymeleaf.cache=true # set to false for hot refresh# FREEMARKER (FreeMarkerAutoConfiguration)spring.freemarker.allowRequestOverride=falsespring.freemarker.allowSessionOverride=falsespring.freemarker.cache=truespring.freemarker.checkTemplateLocation=truespring.freemarker.contentType=text/htmlspring.freemarker.exposeRequestAttributes=falsespring.freemarker.exposeSessionAttributes=falsespring.freemarker.exposeSpringMacroHelpers=falsespring.freemarker.prefix=spring.freemarker.requestContextAttribute=spring.freemarker.settings.*=spring.freemarker.suffix=.ftlspring.freemarker.templateEncoding=UTF-8spring.freemarker.templateLoaderPath=classpath:/templates/spring.freemarker.viewNames= # whitelist of view names that can be resolved# GROOVY TEMPLATES (GroovyTemplateAutoConfiguration)spring.groovy.template.allowRequestOverride=falsespring.groovy.template.allowSessionOverride=falsespring.groovy.template.cache=truespring.groovy.template.configuration.*= # See Groovy's TemplateConfigurationspring.groovy.template.contentType=text/htmlspring.groovy.template.prefix=classpath:/templates/spring.groovy.template.suffix=.tplspring.groovy.template.templateEncoding=UTF-8spring.groovy.template.viewNames= # whitelist of view names that can be resolved# VELOCITY TEMPLATES (VelocityAutoConfiguration)spring.velocity.allowRequestOverride=falsespring.velocity.allowSessionOverride=falsespring.velocity.cache=truespring.velocity.checkTemplateLocation=truespring.velocity.contentType=text/htmlspring.velocity.dateToolAttribute=spring.velocity.exposeRequestAttributes=falsespring.velocity.exposeSessionAttributes=falsespring.velocity.exposeSpringMacroHelpers=falsespring.velocity.numberToolAttribute=spring.velocity.prefix=spring.velocity.properties.*=spring.velocity.requestContextAttribute=spring.velocity.resourceLoaderPath=classpath:/templates/spring.velocity.suffix=.vmspring.velocity.templateEncoding=UTF-8spring.velocity.viewNames= # whitelist of view names that can be resolved# INTERNATIONALIZATION (MessageSourceAutoConfiguration)spring.messages.basename=messagesspring.messages.cacheSeconds=-1spring.messages.encoding=UTF-8# SECURITY (SecurityProperties)security.user.name=user # login usernamesecurity.user.password= # login passwordsecurity.user.role=USER # role assigned to the usersecurity.require-ssl=false # advanced settings ...security.enable-csrf=falsesecurity.basic.enabled=truesecurity.basic.realm=Springsecurity.basic.path= # /**security.headers.xss=falsesecurity.headers.cache=falsesecurity.headers.frame=falsesecurity.headers.contentType=falsesecurity.headers.hsts=all # none / domain / allsecurity.sessions=stateless # always / never / if_required / statelesssecurity.ignored=false# DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)spring.datasource.name= # name of the data sourcespring.datasource.initialize=true # populate using data.sqlspring.datasource.schema= # a schema (DDL) script resource referencespring.datasource.data= # a data (DML) script resource referencespring.datasource.platform= # the platform to use in the schema resource (schema-${platform}.sql)spring.datasource.continueOnError=false # continue even if can't be initializedspring.datasource.separator=; # statement separator in SQL initialization scriptsspring.datasource.driverClassName= # JDBC Settings...spring.datasource.url=spring.datasource.username=spring.datasource.password=spring.datasource.max-active=100 # Advanced configuration...spring.datasource.max-idle=8spring.datasource.min-idle=8spring.datasource.initial-size=10spring.datasource.validation-query=spring.datasource.test-on-borrow=falsespring.datasource.test-on-return=falsespring.datasource.test-while-idle=spring.datasource.time-between-eviction-runs-millis=spring.datasource.min-evictable-idle-time-millis=spring.datasource.max-wait-millis=# MONGODB (MongoProperties)spring.data.mongodb.host= # the db hostspring.data.mongodb.port=27017 # the connection port (defaults to 27107)spring.data.mongodb.uri=mongodb://localhost/test # connection URLspring.data.mongo.repositories.enabled=true # if spring data repository support is enabled# JPA (JpaBaseConfiguration, HibernateJpaAutoConfiguration)spring.jpa.properties.*= # properties to set on the JPA connectionspring.jpa.openInView=truespring.jpa.show-sql=truespring.jpa.database-platform=spring.jpa.database=spring.jpa.generate-ddl=false # ignored by Hibernate, might be useful for other vendorsspring.jpa.hibernate.naming-strategy= # naming classnamespring.jpa.hibernate.ddl-auto= # defaults to create-drop for embedded dbsspring.data.jpa.repositories.enabled=true # if spring data repository support is enabled# SOLR (SolrProperties})spring.data.solr.host=http://127.0.0.1:8983/solrspring.data.solr.zkHost=spring.data.solr.repositories.enabled=true # if spring data repository support is enabled# ELASTICSEARCH (ElasticsearchProperties})spring.data.elasticsearch.cluster-name= # The cluster name (defaults to elasticsearch)spring.data.elasticsearch.cluster-nodes= # The address(es) of the server node (comma-separated; if not specified starts a client node)spring.data.elasticsearch.local=true # if local mode should be used with client nodesspring.data.elasticsearch.repositories.enabled=true # if spring data repository support is enabled# FLYWAY (FlywayProperties)flyway.locations=classpath:db/migrations # locations of migrations scriptsflyway.schemas= # schemas to updateflyway.initVersion= 1 # version to start migrationflyway.prefix=Vflyway.suffix=.sqlflyway.enabled=trueflyway.url= # JDBC url if you want Flyway to create its own DataSourceflyway.user= # JDBC username if you want Flyway to create its own DataSourceflyway.password= # JDBC password if you want Flyway to create its own DataSource# LIQUIBASE (LiquibaseProperties)liquibase.change-log=classpath:/db/changelog/db.changelog-master.yamlliquibase.contexts= # runtime contexts to useliquibase.default-schema= # default database schema to useliquibase.drop-first=falseliquibase.enabled=true# JMXspring.jmx.enabled=true # Expose MBeans from Spring# RABBIT (RabbitProperties)spring.rabbitmq.host= # connection hostspring.rabbitmq.port= # connection portspring.rabbitmq.addresses= # connection addresses (e.g. myhost:9999,otherhost:1111)spring.rabbitmq.username= # login userspring.rabbitmq.password= # login passwordspring.rabbitmq.virtualhost=spring.rabbitmq.dynamic=# REDIS (RedisProperties)spring.redis.host=localhost # server hostspring.redis.password= # server passwordspring.redis.port=6379 # connection portspring.redis.pool.max-idle=8 # pool settings ...spring.redis.pool.min-idle=0spring.redis.pool.max-active=8spring.redis.pool.max-wait=-1# ACTIVEMQ (ActiveMQProperties)spring.activemq.broker-url=tcp://localhost:61616 # connection URLspring.activemq.user=spring.activemq.password=spring.activemq.in-memory=true # broker kind to create if no broker-url is specifiedspring.activemq.pooled=false# HornetQ (HornetQProperties)spring.hornetq.mode= # connection mode (native, embedded)spring.hornetq.host=localhost # hornetQ host (native mode)spring.hornetq.port=5445 # hornetQ port (native mode)spring.hornetq.embedded.enabled=true # if the embedded server is enabled (needs hornetq-jms-server.jar)spring.hornetq.embedded.serverId= # auto-generated id of the embedded server (integer)spring.hornetq.embedded.persistent=false # message persistencespring.hornetq.embedded.data-directory= # location of data content (when persistence is enabled)spring.hornetq.embedded.queues= # comma separate queues to create on startupspring.hornetq.embedded.topics= # comma separate topics to create on startupspring.hornetq.embedded.cluster-password= # customer password (randomly generated by default)# JMS (JmsProperties)spring.jms.pub-sub-domain= # false for queue (default), true for topic# SPRING BATCH (BatchDatabaseInitializer)spring.batch.job.names=job1,job2spring.batch.job.enabled=truespring.batch.initializer.enabled=truespring.batch.schema= # batch schema to load# AOPspring.aop.auto=spring.aop.proxy-target-class=# FILE ENCODING (FileEncodingApplicationListener)spring.mandatory-file-encoding=false# SPRING SOCIAL (SocialWebAutoConfiguration)spring.social.auto-connection-views=true # Set to true for default connection views or false if you provide your own# SPRING SOCIAL FACEBOOK (FacebookAutoConfiguration)spring.social.facebook.app-id= # your application's Facebook App IDspring.social.facebook.app-secret= # your application's Facebook App Secret# SPRING SOCIAL LINKEDIN (LinkedInAutoConfiguration)spring.social.linkedin.app-id= # your application's LinkedIn App IDspring.social.linkedin.app-secret= # your application's LinkedIn App Secret# SPRING SOCIAL TWITTER (TwitterAutoConfiguration)spring.social.twitter.app-id= # your application's Twitter App IDspring.social.twitter.app-secret= # your application's Twitter App Secret# SPRING MOBILE SITE PREFERENCE (SitePreferenceAutoConfiguration)spring.mobile.sitepreference.enabled=true # enabled by default# SPRING MOBILE DEVICE VIEWS (DeviceDelegatingViewResolverAutoConfiguration)spring.mobile.devicedelegatingviewresolver.enabled=true # disabled by defaultspring.mobile.devicedelegatingviewresolver.normalPrefix=spring.mobile.devicedelegatingviewresolver.normalSuffix=spring.mobile.devicedelegatingviewresolver.mobilePrefix=mobile/spring.mobile.devicedelegatingviewresolver.mobileSuffix=spring.mobile.devicedelegatingviewresolver.tabletPrefix=tablet/spring.mobile.devicedelegatingviewresolver.tabletSuffix=# ----------------------------------------# ACTUATOR PROPERTIES# ----------------------------------------# MANAGEMENT HTTP SERVER (ManagementServerProperties)management.port= # defaults to 'server.port'management.address= # bind to a specific NICmanagement.contextPath= # default to '/'# ENDPOINTS (AbstractEndpoint subclasses)endpoints.autoconfig.id=autoconfigendpoints.autoconfig.sensitive=trueendpoints.autoconfig.enabled=trueendpoints.beans.id=beansendpoints.beans.sensitive=trueendpoints.beans.enabled=trueendpoints.configprops.id=configpropsendpoints.configprops.sensitive=trueendpoints.configprops.enabled=trueendpoints.configprops.keys-to-sanitize=password,secretendpoints.dump.id=dumpendpoints.dump.sensitive=trueendpoints.dump.enabled=trueendpoints.env.id=envendpoints.env.sensitive=trueendpoints.env.enabled=trueendpoints.health.id=healthendpoints.health.sensitive=falseendpoints.health.enabled=trueendpoints.info.id=infoendpoints.info.sensitive=falseendpoints.info.enabled=trueendpoints.metrics.id=metricsendpoints.metrics.sensitive=trueendpoints.metrics.enabled=trueendpoints.shutdown.id=shutdownendpoints.shutdown.sensitive=trueendpoints.shutdown.enabled=falseendpoints.trace.id=traceendpoints.trace.sensitive=trueendpoints.trace.enabled=true# MVC ONLY ENDPOINTSendpoints.jolokia.path=jolokiaendpoints.jolokia.sensitive=trueendpoints.jolokia.enabled=true # when using Jolokiaendpoints.error.path=/error# JMX ENDPOINT (EndpointMBeanExportProperties)endpoints.jmx.enabled=trueendpoints.jmx.domain= # the JMX domain, defaults to 'org.springboot'endpoints.jmx.unique-names=falseendpoints.jmx.enabled=trueendpoints.jmx.staticNames=# JOLOKIA (JolokiaProperties)jolokia.config.*= # See Jolokia manual# REMOTE SHELLshell.auth=simple # jaas, key, simple, springshell.command-refresh-interval=-1shell.command-path-pattern= # classpath*:/commands/**, classpath*:/crash/commands/**shell.config-path-patterns= # classpath*:/crash/*shell.disabled-plugins=false # don't expose pluginsshell.ssh.enabled= # ssh settings ...shell.ssh.keyPath=shell.ssh.port=shell.telnet.enabled= # telnet settings ...shell.telnet.port=shell.auth.jaas.domain= # authentication settings ...shell.auth.key.path=shell.auth.simple.user.name=shell.auth.simple.user.password=shell.auth.spring.roles=# GIT INFOspring.git.properties= # resource ref to generated git info properties file