1.新建一个SpringBoot项目
2.Application SpringBoot下添加如下配置即可

 配置HTTPS 同时支持HTTP时松开注释
    @Bean
    public ServletWebServerFactory servletContainer() {
        TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory() {
            @Override
            protected void postProcessContext(Context context) {
                // 如果要强制使用https，请松开以下注释
//                 SecurityConstraint constraint = new SecurityConstraint();
//                 constraint.setUserConstraint("CONFIDENTIAL");
//                 SecurityCollection collection = new SecurityCollection();
//                 collection.addPattern("/*");
//                 constraint.addCollection(collection);
//                 context.addConstraint(constraint);
            }
        };
        tomcat.addAdditionalTomcatConnectors(createStandardConnector()); // 添加http
        return tomcat;
    }

    // 配置http
    private Connector createStandardConnector() {
        // 默认协议为org.apache.coyote.http11.Http11NioProtocol
        Connector connector = new Connector(TomcatServletWebServerFactory.DEFAULT_PROTOCOL);
        connector.setSecure(false);
        connector.setScheme("http");
        connector.setPort(port);
        connector.setRedirectPort(httpsPort); // 当http重定向到https时的https端口号
        return connector;
    }

    @Value("${http.port}")
    private Integer port;

    @Value("${server.port}")
    private Integer httpsPort;

yml配置使用：

server:
  port: 8645
  ssl:
    key-store: D:\KeyStore\keystore.jks
    key-store-password: xxxxxx
    key-store-type: JKS
http:
  port: 8020