参考：@ConditionalOnProperty注解

用法解释

@ConditionalOnProperty(prefix = "server", name = "ssl.enabled", matchIfMissing = true, havingValue = "true")
prefix：application.yml文件中 配置(如配置文件)的名称
name：配置下面的属性名称，多级使用.点连接，如xxx.bbb.ccc
matchIfMissing：如果没有这个属性名，bean是否加载，默认是false（可以不用写），如果没有属性名就不加载bean
havingValue：判断属性名的值是否配备，如果匹配的话，bean才加载。

application.yml属性值

  1. #服务器端口配置
  2. server:
  3.   port: 8888  #正常访问https的端口
  4.   port-http: 2023  #这个是http端口，这个端口会做一个重定向的调整
  5.   ssl:
  6.     enabled: false  #SSL证书是否启用

配置类TomcatConfig

  1. package com.tj.config;
  3. import org.apache.catalina.Context;
  4. import org.apache.catalina.connector.Connector;
  5. import org.apache.coyote.http11.Http11NioProtocol;
  6. import org.apache.tomcat.util.descriptor.web.SecurityCollection;
  7. import org.apache.tomcat.util.descriptor.web.SecurityConstraint;
  8. import org.springframework.beans.factory.annotation.Value;
  9. import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
  10. import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
  11. import org.springframework.context.annotation.Bean;
  12. import org.springframework.context.annotation.Configuration;
  14. /**
  15.  * 配置http访问端口跳转到https端口的（非必须配置的）
  16.  */
  17. @Configuration
  18. //根据ssl.enabled的值来控制是否加载，如果没有配置，就默认加载，如果配置了，当值为true的时候才加载
  19. @ConditionalOnProperty(prefix = "server", name = "ssl.enabled", matchIfMissing = true, havingValue = "true")
  20. public class TomcatConfig {
  21.     // http 请求端口，线上配置为 8080
  22.     @Value("${server.port-http}")
  23.     private int serverPortHttp;
  25.     // 服务器运行端口，等同于 HTTPS 请求端口，线上 443
  26.     @Value("${server.port}")
  27.     private int serverPortHttps;
  29.     @Bean
  30.     TomcatServletWebServerFactory tomcatServletWebServerFactory() {
  31.         TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory() {
  32.             @Override
  33.             protected void postProcessContext(Context context) {
  34.                 // TODO Auto-generated method stub
  35.                 SecurityConstraint constraint = new SecurityConstraint();
  36.                 constraint.setUserConstraint("CONFIDENTIAL");
  37.                 SecurityCollection collection = new SecurityCollection();
  38.                 collection.addPattern("/");
  39.                 constraint.addCollection(collection);
  40.                 context.addConstraint(constraint);
  41.             }
  42.         };
  44.         factory.addAdditionalTomcatConnectors(createTomcatConnector());
  45.         return factory;
  47.     }
  49.     private Connector createTomcatConnector() {
  50.         Connector connector = new Connector(Http11NioProtocol.class.getName());
  51.         //Connector监听的http的端口号
  52.         connector.setPort(serverPortHttp);
  53.         connector.setSecure(false);
  54.         //监听到http的端口号后转向到的https的端口号
  55.         connector.setRedirectPort(serverPortHttps);
  56.         return connector;
  57.     }
  59. }