配置优先级

1. Devtools global settings properties on your home directory (~/.spring-boot-devtools.properties when devtools is active).
2. @TestPropertySource annotations on your tests.
3. @SpringBootTest#properties annotation attribute on your tests.
4. Command line arguments.
5. Properties from SPRING_APPLICATION_JSON (inline JSON embedded in an environment variable or system property)
6. ServletConfig init parameters.
7. ServletContext init parameters.
8. JNDI attributes from java:comp/env.
9. Java System properties (System.getProperties()).
10. OS environment variables.
11. A RandomValuePropertySource that only has properties in random.*.
12. Profile-specific application properties outside of your packaged jar (application-{profile}.properties and YAML variants)
13. Profile-specific application properties packaged inside your jar (application-{profile}.properties and YAML variants)
14. Application properties outside of your packaged jar (application.properties and YAML variants).
15. Application properties packaged inside your jar (application.properties and YAML variants).
16. @PropertySource annotations on your @Configuration classes.
17. Default properties (specified using SpringApplication.setDefaultProperties).

配置优先级
  1.命令行参数。
  2.通过 System.getProperties() 获取的 Java 系统参数。
  3.操作系统环境变量(env)。
  4.从 java:comp/env 得到的 JNDI 属性。
  5.通过 RandomValuePropertySource 生成的“random.*”属性。
  6.应用jar文件之外的属性文件。(通过-Dspring.config.location参数)
  7.应用jar文件内部的属性文件。
  8.在应用配置java类（包含“@Configuration”注解的java类）中通过“@PropertySource”注解声明的属性文件。
  9.在xml中通过context:property-placeholder或者PropertyPlaceholderConfigurer指定的属性文件。
  10.通过“SpringApplication.setDefaultProperties”声明的默认属性。

命令行参数
    SpringApplication 类默认会把以“--”开头的命令行参数转化成应用中可以使用的配置参数

RandomValuePropertySource 
    可以用来生成测试所需要的各种不同类型的随机值，从而免去了在代码中生成的麻烦。
    可以生成数字和字符串。数字的类型包含 int 和 long，可以限定数字的大小范围
    以“random.”作为前缀的配置属性名称由 RandomValuePropertySource 来生成

属性文件
    Spring Boot 提供的 SpringApplication 类会搜索并加载 application.properties 文件来获取配置属性值
        当前目录的“/config”子目录。
        当前目录。
        classpath 中的“/config”包。
        classpath
    可以通过“spring.config.name”配置属性来指定不同的属性文件名称。
    也可以通过“spring.config.location”来添加额外的属性文件的搜索路径。
    如果应用中包含多个 profile，可以为每个 profile 定义各自的属性文件，按照“application-{profile}”来命名
    对于配置属性，可以在代码中通过“@Value”来使用

1.To set a default value in Spring expression, use Elvis operator:#{expression ?: default value}
如@Value("#{systemProperties['mongodb.port'] ?: 27017}")private String mongodbPort;@Value("#{config['mongodb.url'] ?: '127.0.0.1'}")private String mongodbUrl;   @Value("#{aBean.age ?: 21}")private int age;2.To set a default value for property placeholder：${property : default value}
如@Value("#{systemProperties['mongodb.port'] ?: 27017}")private String mongodbPort;//@Value("${mongodb.url:127.0.0.1}")@Value("#{config['mongodb.url'] ?: '127.0.0.1'}")private String mongodbUrl;@Value("#{aBean.age ?: 21}")private int age;
其中
config.propertiesmongodb.url=1.2.3.4mongodb.db=hello“config” bean
//@PropertySource("classpath:/config.properties}")
//@Configuration
or “config” bean
//<util:properties id="config" location="classpath:config.properties"/>
+
//@Bean
//public static PropertySourcesPlaceholderConfigurer propertyConfigIn() {
//   return new PropertySourcesPlaceholderConfigurer();
//}

CommandLineRunner
  Spring Boot提供了一个CommandLineRunner接口，实现这个接口的类总是会被优先启动，并优先执行CommandLineRunner接口中提供的run()方法
  如果有多个CommandLineRunner接口实现类，那么可以通过注解@Order来规定所有实现类的运行顺序

Tomcat
pom

  <properties><java.version>1.8</java.version><tomcat.version>8.0.3</tomcat.version></properties>

properties

  #端口server.port=8080server.servlet.context-path=/zm####Tomcat specific properties######### tomcat最大线程数，默认为200server.tomcat.max-threads=800# tomcat的URI编码server.tomcat.uri-encoding=UTF-8# 存放Tomcat的日志、Dump等文件的临时文件夹，默认为系统的tmp文件夹server.tomcat.basedir=/tmp/tomcat/tomcat/springboot-tomcat-tmp# 打开Tomcat的Access日志，并可以设置日志格式的方法：#server.tomcat.access-log-enabled=true#server.tomcat.access-log-pattern=# accesslog目录，默认在basedir/logs#server.tomcat.accesslog.directory=# 日志文件目录 Logbacklogging.path=/data/springboot-tomcat-tmp# 日志文件名称，默认为spring.loglogging.file=zm.log# 配置具体logging.level.root=INFOlogging.level.org.springframework.web=DEBUGlogging.level.org.hibernate=ERROR

jetty
pom

  <properties><java.version>1.8</java.version><jetty.version>9.1.0.v20131115</jetty.version><servlet-api.version>3.1.0</servlet-api.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><exclusions><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-tomcat</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-jetty</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies>

properties

  server.port=8080server.servlet.context-path=/zm####Jetty specific properties########server.jetty.acceptors= 10          # Number of acceptor threads to use.server.jetty.max-http-post-size=0   # Maximum size in bytes of the HTTP post or put content.server.jetty.selectors=5             # Number of selector threads to use.#spring boot内部使用Commons Logging来记录日志，但也保留外部接口可以让一些日志框架来进行实现，如果用某一种#日志框架来进行实现的话，就必须先配置，默认情况下，spring boot使用Logback作为日志实现的框架#二者不能同时使用，如若同时使用，则只有logging.file生效# 日志文件目录，默认生成spring.loglogging.path=logs/# 日志文件名称，默认为spring.loglogging.file=logs/zm.log# 默认使用logback.xml作为配置logging.config=classpath:logging-config.xml# 配置具体logging.level.root=INFOlogging.level.org.springframework.web=DEBUGlogging.level.org.hibernate=ERROR

通用模板

# SPRING CONFIG (ConfigFileApplicationListener)
spring.config.name= # 指定配置文件名称 (default to 'application')
spring.config.location= # 配置文件地址# PROFILES
spring.profiles= # comma list of active profiles# APPLICATION SETTINGS (SpringApplication)
spring.main.sources=
spring.main.web-environment= # detect by default
spring.main.show-banner=true
spring.main....= # see class for all properties# LOGGING Logback
logging.path=/var/logs
logging.file=myspringapp.log
logging.config=
logging.level.root=INFO
logging.level.org.springframework.web=DEBUG
logging.level.org.hibernate=ERROR# IDENTITY (ContextIdApplicationContextInitializer)
spring.application.name=
spring.application.index=# EMBEDDED SERVER CONFIGURATION (ServerProperties)
server.port=8080
server.address= # bind to a specific NIC
server.session-timeout= # session timeout in seconds
server.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 log
server.tomcat.access-log-enabled=false # is access logging enabled
server.tomcat.protocol-header=x-forwarded-proto # ssl forward headers
server.tomcat.remote-ip-header=x-forwarded-for
server.tomcat.basedir=/tmp # base dir (usually not needed, defaults to tmp)
server.tomcat.background-processor-delay=30; # in seconds
server.tomcat.max-threads = 0 # number of threads in protocol handler
server.tomcat.uri-encoding = UTF-8 # character encoding to use for URL decoding# SPRING MVC (HttpMapperProperties)
http.mappers.json-pretty-print=false # pretty print JSON
http.mappers.json-sort-keys=false # sort keys
spring.mvc.locale= # set fixed locale, e.g. en_UK
spring.mvc.date-format= # set fixed date format, e.g. dd/MM/yyyy
spring.mvc.message-codes-resolver-format= # PREFIX_ERROR_CODE / POSTFIX_ERROR_CODE
spring.mvc.view.prefix=/WEB-INF/view/
spring.mvc.view.suffix=.jsp
#spring.resources.static-locations=classpath:/resources/,classpath:/static/
spring.resources.cache-period= # cache timeouts in headers sent to browser
spring.resources.add-mappings=true # if default mappings should be added# THYMELEAF (ThymeleafAutoConfiguration)
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html
spring.thymeleaf.mode=HTML5
spring.thymeleaf.encoding=UTF-8
spring.thymeleaf.content-type=text/html # ;charset=<encoding> is added
spring.thymeleaf.cache=true # set to false for hot refresh# FREEMARKER (FreeMarkerAutoConfiguration)
spring.freemarker.allowRequestOverride=false
spring.freemarker.allowSessionOverride=false
spring.freemarker.cache=true
spring.freemarker.checkTemplateLocation=true
spring.freemarker.contentType=text/html
spring.freemarker.exposeRequestAttributes=false
spring.freemarker.exposeSessionAttributes=false
spring.freemarker.exposeSpringMacroHelpers=false
spring.freemarker.prefix=
spring.freemarker.requestContextAttribute=
spring.freemarker.settings.*=
spring.freemarker.suffix=.ftl
spring.freemarker.templateEncoding=UTF-8
spring.freemarker.templateLoaderPath=classpath:/templates/
spring.freemarker.viewNames= # whitelist of view names that can be resolved# GROOVY TEMPLATES (GroovyTemplateAutoConfiguration)
spring.groovy.template.allowRequestOverride=false
spring.groovy.template.allowSessionOverride=false
spring.groovy.template.cache=true
spring.groovy.template.configuration.*= # See Groovy's TemplateConfiguration
spring.groovy.template.contentType=text/html
spring.groovy.template.prefix=classpath:/templates/
spring.groovy.template.suffix=.tpl
spring.groovy.template.templateEncoding=UTF-8
spring.groovy.template.viewNames= # whitelist of view names that can be resolved# VELOCITY TEMPLATES (VelocityAutoConfiguration)
spring.velocity.allowRequestOverride=false
spring.velocity.allowSessionOverride=false
spring.velocity.cache=true
spring.velocity.checkTemplateLocation=true
spring.velocity.contentType=text/html
spring.velocity.dateToolAttribute=
spring.velocity.exposeRequestAttributes=false
spring.velocity.exposeSessionAttributes=false
spring.velocity.exposeSpringMacroHelpers=false
spring.velocity.numberToolAttribute=
spring.velocity.prefix=
spring.velocity.properties.*=
spring.velocity.requestContextAttribute=
spring.velocity.resourceLoaderPath=classpath:/templates/
spring.velocity.suffix=.vm
spring.velocity.templateEncoding=UTF-8
spring.velocity.viewNames= # whitelist of view names that can be resolved# INTERNATIONALIZATION (MessageSourceAutoConfiguration)
spring.messages.basename=messages
spring.messages.cacheSeconds=-1
spring.messages.encoding=UTF-8# SECURITY (SecurityProperties)
security.basic.authorize-mode=role # 应用授权模式，ROLE=成员必须是安全的角色，AUTHENTICATED=经过身份验证的用户，NONE=没有设置安全授权
security.basic.enabled=true # 启用基本身份认证
security.basic.path=/** # 拦截策略，以逗号分隔
security.basic.realm=Spring # HTTP基本realm
security.enable-csrf=false # 启用csrf支持
security.filter-order=0 # 过滤器执行顺序
security.filter-dispatcher-types=ASYNC, FORWARD, INCLUDE, REQUEST # security 过滤器链dispatcher类型
security.headers.cache=true # 启用缓存控制 HTTP headers.
security.headers.content-type=true # 启用 "X-Content-Type-Options" header.
security.headers.frame=true # 启用 "X-Frame-Options" header.
security.headers.hsts= # HTTP Strict Transport Security (HSTS) mode (none, domain, all).
security.headers.xss=true # 启用跨域脚本 (XSS) 保护.
security.ignored=false# 安全策略，以逗号分隔
security.require-ssl=false # 启用所有请求SSL
security.sessions=stateless # Session 创建策略(always, never, if_required, stateless).
security.user.name=user # 默认用户名
security.user.password= # 默认用户名密码
security.user.role=USER # 默认用户角色# SECURITY OAUTH2 CLIENT (OAuth2ClientProperties 类中)
security.oauth2.client.client-id= # OAuth2 client id.
security.oauth2.client.client-secret= # OAuth2 client secret. A random secret is generated by default# SECURITY OAUTH2 RESOURCES (ResourceServerProperties 类中)
security.oauth2.resource.id= # Identifier of the resource.
security.oauth2.resource.jwt.key-uri= # The URI of the JWT token. Can be set if the value is not available and the key is public.
security.oauth2.resource.jwt.key-value= # The verification key of the JWT token. Can either be a symmetric secret or PEM-encoded RSA public key.
security.oauth2.resource.prefer-token-info=true # Use the token info, can be set to false to use the user info.
security.oauth2.resource.service-id=resource #
security.oauth2.resource.token-info-uri= # URI of the token decoding endpoint.
security.oauth2.resource.token-type= # The token type to send when using the userInfoUri.
security.oauth2.resource.user-info-uri= # URI of the user endpoint.# SECURITY OAUTH2 SSO (OAuth2SsoProperties 类中)
security.oauth2.sso.filter-order= # Filter order to apply if not providing an explicit WebSecurityConfigurerAdapter
security.oauth2.sso.login-path=/login # Path to the login page, i.e. the one that triggers the redirect to the OAuth2 Authorization Server# DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)
spring.datasource.name= # name of the data source
spring.datasource.initialize=true # populate using data.sql
spring.datasource.schema= # a schema (DDL) script resource reference
spring.datasource.data= # a data (DML) script resource reference
spring.datasource.platform= # the platform to use in the schema resource (schema-${platform}.sql)
spring.datasource.continueOnError=false # continue even if can't be initialized
spring.datasource.separator=; # statement separator in SQL initialization scripts
spring.datasource.driverClassName= # JDBC Settings...
spring.datasource.url=
spring.datasource.username=
spring.datasource.password=
spring.datasource.max-active=100 # Advanced configuration...
spring.datasource.max-idle=8
spring.datasource.min-idle=8
spring.datasource.initial-size=10
spring.datasource.validation-query=
spring.datasource.test-on-borrow=false
spring.datasource.test-on-return=false
spring.datasource.test-while-idle=
spring.datasource.time-between-eviction-runs-millis=
spring.datasource.min-evictable-idle-time-millis=
spring.datasource.max-wait-millis=# JPA (JpaBaseConfiguration, HibernateJpaAutoConfiguration)
spring.jpa.properties.*= # properties to set on the JPA connection
spring.jpa.openInView=true
spring.jpa.show-sql=true
spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
spring.jpa.database=MYSQL
# Hibernate ddl auto (true, false, none, validate, create, create-drop, update)
spring.jpa.generate-ddl=false # ignored by Hibernate, might be useful for other vendors
spring.jpa.hibernate.naming-strategy=org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.hibernate.ddl-auto= # defaults to create-drop for embedded dbs
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect# JPA Data
spring.data.jpa.repositories.enabled=true # if spring data repository support is enabled# MONGODB Data (MongoProperties)
spring.data.mongodb.host= # the db host
spring.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# SOLR  data(SolrProperties})
spring.data.solr.host=http://127.0.0.1:8983/solr
spring.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 nodes
spring.data.elasticsearch.repositories.enabled=true # if spring data repository support is enabled# FLYWAY (FlywayProperties)
flyway.locations=classpath:db/migrations # locations of migrations scripts
flyway.schemas= # schemas to update
flyway.initVersion= 1 # version to start migration
flyway.prefix=V
flyway.suffix=.sql
flyway.enabled=true
flyway.url= # JDBC url if you want Flyway to create its own DataSource
flyway.user= # JDBC username if you want Flyway to create its own DataSource
flyway.password= # JDBC password if you want Flyway to create its own DataSource# LIQUIBASE (LiquibaseProperties)
liquibase.change-log=classpath:/db/changelog/db.changelog-master.yaml
liquibase.contexts= # runtime contexts to use
liquibase.default-schema= # default database schema to use
liquibase.drop-first=false
liquibase.enabled=true# JMX
spring.jmx.enabled=true # Expose MBeans from Spring# RABBIT (RabbitProperties)
spring.rabbitmq.host= # connection host
spring.rabbitmq.port= # connection port
spring.rabbitmq.addresses= # connection addresses (e.g. myhost:9999,otherhost:1111)
spring.rabbitmq.username= # login user
spring.rabbitmq.password= # login password
spring.rabbitmq.virtualhost=
spring.rabbitmq.dynamic=# REDIS (RedisProperties)
spring.redis.host=localhost # server host
spring.redis.password= # server password
spring.redis.port=6379 # connection port
spring.redis.pool.max-idle=8 # pool settings ...
spring.redis.pool.min-idle=0
spring.redis.pool.max-active=8
spring.redis.pool.max-wait=-1# ACTIVEMQ (ActiveMQProperties)
spring.activemq.broker-url=tcp://localhost:61616 # connection URL
spring.activemq.user=
spring.activemq.password=
spring.activemq.in-memory=true # broker kind to create if no broker-url is specified
spring.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 persistence
spring.hornetq.embedded.data-directory= # location of data content (when persistence is enabled)
spring.hornetq.embedded.queues= # comma separate queues to create on startup
spring.hornetq.embedded.topics= # comma separate topics to create on startup
spring.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,job2
spring.batch.job.enabled=true
spring.batch.initializer.enabled=true
spring.batch.schema= # batch schema to load# AOP
spring.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 ID
spring.social.facebook.app-secret= # your application's Facebook App Secret# SPRING SOCIAL LINKEDIN (LinkedInAutoConfiguration)
spring.social.linkedin.app-id= # your application's LinkedIn App ID
spring.social.linkedin.app-secret= # your application's LinkedIn App Secret# SPRING SOCIAL TWITTER (TwitterAutoConfiguration)
spring.social.twitter.app-id= # your application's Twitter App ID
spring.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 default
spring.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 NIC
management.contextPath= # default to '/'# ENDPOINTS (AbstractEndpoint subclasses)
endpoints.autoconfig.id=autoconfig
endpoints.autoconfig.sensitive=true
endpoints.autoconfig.enabled=true
endpoints.beans.id=beans
endpoints.beans.sensitive=true
endpoints.beans.enabled=true
endpoints.configprops.id=configprops
endpoints.configprops.sensitive=true
endpoints.configprops.enabled=true
endpoints.configprops.keys-to-sanitize=password,secret
endpoints.dump.id=dump
endpoints.dump.sensitive=true
endpoints.dump.enabled=true
endpoints.env.id=env
endpoints.env.sensitive=true
endpoints.env.enabled=true
endpoints.health.id=health
endpoints.health.sensitive=false
endpoints.health.enabled=true
endpoints.info.id=info
endpoints.info.sensitive=false
endpoints.info.enabled=true
endpoints.metrics.id=metrics
endpoints.metrics.sensitive=true
endpoints.metrics.enabled=true
endpoints.shutdown.id=shutdown
endpoints.shutdown.sensitive=true
endpoints.shutdown.enabled=false
endpoints.trace.id=trace
endpoints.trace.sensitive=true
endpoints.trace.enabled=true# MVC ONLY ENDPOINTS
endpoints.jolokia.path=jolokia
endpoints.jolokia.sensitive=true
endpoints.jolokia.enabled=true # when using Jolokia
endpoints.error.path=/error# JMX ENDPOINT (EndpointMBeanExportProperties)
endpoints.jmx.enabled=true
endpoints.jmx.domain= # the JMX domain, defaults to 'org.springboot'
endpoints.jmx.unique-names=false
endpoints.jmx.enabled=true
endpoints.jmx.staticNames=# JOLOKIA (JolokiaProperties)
jolokia.config.*= # See Jolokia manual# REMOTE SHELL
shell.auth=simple # jaas, key, simple, spring
shell.command-refresh-interval=-1
shell.command-path-pattern= # classpath*:/commands/**, classpath*:/crash/commands/**
shell.config-path-patterns= # classpath*:/crash/*
shell.disabled-plugins=false # don't expose plugins
shell.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 INFO
spring.git.properties= # resource ref to generated git info properties