这里讲的是 Spring Boot 内嵌式 Server 打 jar 包运行的方式，打 WAR 包部署的就不存在要 Spring Boot 支持 HTTPS 了，需要去外部对应的 Server 配置。
你所需具备的基础
更多请在Java技术栈微信公众号后台回复关键字：boot。
支持 HTTPS
Spring Boot 配置 SSL 很简单，只需要通过一系列的 server.ssl.* 参数即可完成配置，如下所示。
application.properties 配置文件参考配置：
server.port=8443server.ssl.protocol=TLSserver.ssl.key-store=classpath:javastack.keystoreserver.ssl.key-store-password=javastackserver.ssl.key-store-type=JKS8443server.ssl.protocol=TLSserver.ssl.key-store=classpath:javastack.keystoreserver.ssl.key-store-password=javastackserver.ssl.key-store-type=JKS
如何在本地测试创建证书请参考这篇文章《一分钟开启Tomcat https支持》，把生成完的证书复制到 Spring Boot 项目中的 resources 目录即可。
这边只是提供了一个 SSL 单向验证的演示，更多 SSL 参数配置如下。
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.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.
参数对应的类：org.springframework.boot.web.server.Ssl
上面的例子配置后就能开启 HTTPS 了，默认的 HTTP 协议就不再支持了，Spring Boot 不支持以配置文件配置的方式同时支持 HTTP 和 HTTPS。
如何同时支持?
如果你需要同时支持 HTTP 和 HTTPS 这两个协议，就需要把另外一个协议用程序化的方式来配置。
因为通过程序的方式配置 HTTP 协议更加简单一点，所以，Spring Boot 推荐的做法是把 HTTPS 配置在配置文件，HTTP 通过程序来配置。
来，下面示例就是通过程序的方式来额外支持 HTTP 协议。
@SpringBootApplicationpublic class JavastackApplication { @Bean public ServletWebServerFactory servletContainer() { TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory(); tomcat.addAdditionalTomcatConnectors(createStandardConnector()); return tomcat; } private Connector createStandardConnector() { Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol"); connector.setPort(8080); return connector; } public static void main(String[] args) { SpringApplication.run(JavastackApplication.class, args); }}public class JavastackApplication { @Bean public ServletWebServerFactory servletContainer() { TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory(); tomcat.addAdditionalTomcatConnectors(createStandardConnector()); return tomcat; } private Connector createStandardConnector() { Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol"); connector.setPort(8080); return connector; } public static void main(String[] args) { SpringApplication.run(JavastackApplication.class, args); }}
启动 Spring Boot 之后就会看到下面的同时支持两个协议日志。
Tomcat started on port(s): 8443 (https) 8080 (http) with context path '/'on port(s): 8443 (https) 8080 (http) with context path '/'
Spring Boot 支持 HTTPS 如此简单，开发现在把运维的事都做了……
