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Spring Boot 默认内嵌 Tomcat 服务器。使用的时候极其简单，只需要在配置文件中对 服务器属性进行简单配置就能启动。启动可以在 main 入口运行。也可以打成 jar 的形式，直接运行 jar 即可，相当方便。
项目构建使用 Maven ，便于管理依赖 jar，打包部署。
一、内嵌 Tomcat 服务器属性配置
内嵌服务器可配置属性如下，资料来自官网：
server.address= # Network address to which the server should bind to.
server.compression.enabled=false # If response compression is enabled.
server.compression.excluded-user-agents= # List of user-agents to exclude from compression.
server.compression.mime-types= # Comma-separated list of MIME types that should be compressed. For instance `text/html,text/css,application/json`
server.compression.min-response-size= # Minimum response size that is required for compression to be performed. For instance 2048
server.connection-timeout= # Time in milliseconds that connectors will wait for another HTTP request before closing the connection. When not set, the connector's container-specific default will be used. Use a value of -1 to indicate no (i.e. infinite) timeout.
server.context-parameters.*= # Servlet context init parameters. For instance `server.context-parameters.a=alpha`
server.context-path= # Context path of the application.
server.display-name=application # Display name of the application.
server.max-http-header-size=0 # Maximum size in bytes of the HTTP message header.
server.error.include-stacktrace=never # When to include a "stacktrace" attribute.
server.error.path=/error # Path of the error controller.
server.error.whitelabel.enabled=true # Enable the default error page displayed in browsers in case of a server error.
server.jetty.acceptors= # 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= # Number of selector threads to use.
server.jsp-servlet.class-name=org.apache.jasper.servlet.JspServlet # The class name of the JSP servlet.
server.jsp-servlet.init-parameters.*= # Init parameters used to configure the JSP servlet
server.jsp-servlet.registered=true # Whether or not the JSP servlet is registered
server.port=8080 # Server HTTP port.
server.server-header= # Value to use for the Server response header (no header is sent if empty)
server.servlet-path=/ # Path of the main dispatcher servlet.
server.use-forward-headers= # If X-Forwarded-* headers should be applied to the HttpRequest.
server.session.cookie.comment= # Comment for the session cookie.
server.session.cookie.domain= # Domain for the session cookie.
server.session.cookie.http-only= # "HttpOnly" flag for the session cookie.
server.session.cookie.max-age= # Maximum age of the session cookie in seconds.
server.session.cookie.name= # Session cookie name.
server.session.cookie.path= # Path of the session cookie.
server.session.cookie.secure= # "Secure" flag for the session cookie.
server.session.persistent=false # Persist session data between restarts.
server.session.store-dir= # Directory used to store session data.
server.session.timeout= # Session timeout in seconds.
server.session.tracking-modes= # Session tracking modes (one or more of the following: "cookie", "url", "ssl").
server.ssl.ciphers= # Supported SSL ciphers.
server.ssl.client-auth= # Whether client authentication is wanted ("want") or needed ("need"). Requires a trust store.
server.ssl.enabled= # Enable SSL support.
server.ssl.enabled-protocols= # Enabled SSL protocols.
server.ssl.key-alias= # Alias that identifies the key in the key store.
server.ssl.key-password= # Password used to access the key in the key store.
server.ssl.key-store= # Path to the key store that holds the SSL certificate (typically a jks file).
server.ssl.key-store-password= # Password used to access the key store.
server.ssl.key-store-provider= # Provider for the key store.
server.ssl.key-store-type= # Type of the key store.
server.ssl.protocol=TLS # SSL protocol to use.
server.ssl.trust-store= # Trust store that holds SSL certificates.
server.ssl.trust-store-password= # Password used to access the trust store.
server.ssl.trust-store-provider= # Provider for the trust store.
server.ssl.trust-store-type= # Type of the trust store.
server.tomcat.accept-count= # Maximum queue length for incoming connection requests when all possible request processing threads are in use.
server.tomcat.accesslog.buffered=true # Buffer output such that it is only flushed periodically.
server.tomcat.accesslog.directory=logs # Directory in which log files are created. Can be relative to the tomcat base dir or absolute.
server.tomcat.accesslog.enabled=false # Enable access log.
server.tomcat.accesslog.file-date-format=.yyyy-MM-dd # Date format to place in log file name.
server.tomcat.accesslog.pattern=common # Format pattern for access logs.
server.tomcat.accesslog.prefix=access_log # Log file name prefix.
server.tomcat.accesslog.rename-on-rotate=false # Defer inclusion of the date stamp in the file name until rotate time.
server.tomcat.accesslog.request-attributes-enabled=false # Set request attributes for IP address, Hostname, protocol and port used for the request.
server.tomcat.accesslog.rotate=true # Enable access log rotation.
server.tomcat.accesslog.suffix=.log # Log file name suffix.
server.tomcat.additional-tld-skip-patterns= # Comma-separated list of additional patterns that match jars to ignore for TLD scanning.
server.tomcat.background-processor-delay=30 # Delay in seconds between the invocation of backgroundProcess methods.
server.tomcat.basedir= # Tomcat base directory. If not specified a temporary directory will be used.
server.tomcat.internal-proxies=10\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|\\
192\\.168\\.\\d{1,3}\\.\\d{1,3}|\\
169\\.254\\.\\d{1,3}\\.\\d{1,3}|\\
127\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}|\\
172\\.1[6-9]{1}\\.\\d{1,3}\\.\\d{1,3}|\\
172\\.2[0-9]{1}\\.\\d{1,3}\\.\\d{1,3}|\\
172\\.3[0-1]{1}\\.\\d{1,3}\\.\\d{1,3} # regular expression matching trusted IP addresses.
server.tomcat.max-connections= # Maximum number of connections that the server will accept and process at any given time.
server.tomcat.max-http-post-size=0 # Maximum size in bytes of the HTTP post content.
server.tomcat.max-threads=0 # Maximum amount of worker threads.
server.tomcat.min-spare-threads=0 # Minimum amount of worker threads.
server.tomcat.port-header=X-Forwarded-Port # Name of the HTTP header used to override the original port value.
server.tomcat.protocol-header= # Header that holds the incoming protocol, usually named "X-Forwarded-Proto".
server.tomcat.protocol-header-https-value=https # Value of the protocol header that indicates that the incoming request uses SSL.
server.tomcat.redirect-context-root= # Whether requests to the context root should be redirected by appending a / to the path.
server.tomcat.remote-ip-header= # Name of the http header from which the remote ip is extracted. For instance `X-FORWARDED-FOR`
server.tomcat.uri-encoding=UTF-8 # Character encoding to use to decode the URI.
server.undertow.accesslog.dir= # Undertow access log directory.
server.undertow.accesslog.enabled=false # Enable access log.
server.undertow.accesslog.pattern=common # Format pattern for access logs.
server.undertow.accesslog.prefix=access_log. # Log file name prefix.
server.undertow.accesslog.rotate=true # Enable access log rotation.
server.undertow.accesslog.suffix=log # Log file name suffix.
server.undertow.buffer-size= # Size of each buffer in bytes.
server.undertow.direct-buffers= # Allocate buffers outside the Java heap.
server.undertow.io-threads= # Number of I/O threads to create for the worker.
server.undertow.max-http-post-size=0 # Maximum size in bytes of the HTTP post content.
server.undertow.worker-threads= # Number of worker threads.
其中常用的属性配置说明：
# 项目contextPath，一般在正式发布版本中，我们不配置
server.context-path=/myspringboot
# 错误页，指定发生错误时，跳转的URL。请查看BasicErrorController源码便知
server.error.path=/error
# 服务端口
server.port=9090
# session最大超时时间(分钟)，默认为30
server.session-timeout=60
# 该服务绑定IP地址，启动服务器时如本机不是该IP地址则抛出异常启动失败，只有特殊需求的情况下才配置
# server.address=192.168.16.11
Tomcat 常用配置：
# tomcat最大线程数，默认为200
server.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（如：C:\Users\Shanhy\AppData\Local\Temp）
server.tomcat.basedir=H:/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
logging.path=H:/springboot-tomcat-tmp
# 日志文件名称，默认为spring.log
logging.file=myapp.log
二、命令行方式打包
cmd 进去项目根目录，执行命令 mvn clean package ，如果项目中包含单元测试代码，可以追加 -Dmaven.test.skip=true过滤掉测试代码。
打包成功 一般是在 target 目录下生成一个以项目名+版本号，jar为后缀名的文件，就是我们想要的。
执行 java -jar xxxx.jar 运行项目。正式环境中只需要部署 jar 包就可以运行 web 工程了。
三、命令行动态修改配置
有些系统，关于一些数据库或其他第三方账户等信息，由于安全问题，其配置并不会提前配置在项目中暴露给开发人员。
当我们使用 java -jar xxxx.jar 部署 web 项目之后，还可以通过命令行的方式来修改配置。
可以用下面的命令动态的修改 Tomcat 的端口号：
java -jar xx.jar --server.port=8888
这样就类似于在 application.properties 中添加配置属性。
四、使用Profile区分环境
当我们开发项目的时候，同一套代码可能需要部署在不同的安装环境下，例如：开发，测试，生产。其中每个环境的配置文件属性，例如数据库地址，服务端口等都会不同，假如我们需要在打包的时候为每个不同的环境设置不同配置属性的话，那将很麻烦。
这时候我们需要在 Spring Boot 中配置多套配置文件名，满足application-{profile}.properties格式，其中{profile}为环境标识。比如开发环境，测试环境，生产环境等
- application-dev.properties：开发环境
- application-test.properties：测试环境
- application-prod.properties：生产环境
现在我们可以在 application.properties 中通过设置spring.profiles.active属性值来确定加载哪个配置文件，值分别对应 {profile}的值。
如：spring.profiles.active=test就会加载application-test.properties配置文件内容
参考链接：
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