1、将生成的证书放到resources下

2、在pom文件中进行过滤配置

<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-resources-plugin</artifactId>
				<configuration><encoding>UTF-8</encoding>
					<!-- 过滤后缀为pem、pfx的证书文件 -->
					<nonFilteredFileExtensions>
						<nonFilteredFileExtension>cer</nonFilteredFileExtension>
						<nonFilteredFileExtension>pem</nonFilteredFileExtension>
						<nonFilteredFileExtension>pfx</nonFilteredFileExtension>
						<nonFilteredFileExtension>jks</nonFilteredFileExtension>
					</nonFilteredFileExtensions>
				</configuration>
			</plugin>

3、在启动类中加入

@Bean
    public Connector connector() {
        Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
        connector.setScheme("http");
        connector.setPort(80);
        connector.setSecure(false);
        connector.setRedirectPort(443);
        return connector;
    }

    @Bean
    public TomcatServletWebServerFactory tomcatServletWebServerFactory(Connector connector) {
        TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory() {
            @Override
            protected void postProcessContext(Context context) {
                SecurityConstraint securityConstraint = new SecurityConstraint();
                securityConstraint.setUserConstraint("CONFIDENTIAL");
                SecurityCollection collection = new SecurityCollection();
                collection.addPattern("/*");
                securityConstraint.addCollection(collection);
                context.addConstraint(securityConstraint);
            }
        };
        tomcat.addAdditionalTomcatConnectors(connector);
        return tomcat;
    }

4、在配置文件中加入

server.ssl.key-store=classpath:12345678_xxxxx.xxx.pfx
server.ssl.key-store-password=xxxxxxxx
server.ssl.keyStoreType=PKCS12