默认容器

spring boot默认web程序启用tomcat内嵌容器tomcat，监听8080端口,servletPath默认为 / 。需要用到的就是端口、上下文路径的修改，在spring boot中其修改方法极其简单，实例如下：

server.port=8088
server.context-path=/test

启动程序，日志如下：

2021-08-17 15:28:36.239  INFO 25340 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8088 (http) with context path ''
2021-08-17 15:28:36.254  INFO 25340 --- [           main] c.e.springboot.SpringbootApplication     : Started SpringbootApplication in 1.295 seconds (JVM running for 1.822)

可看出监听端口为8088

自定义tomcat

在实际的项目中简单的配置tomcat端口肯定无法满足大家的需求，因此需要自定义tomcat配置信息来灵活的控制tomcat。下面的实例定义了tomcat的默认编码格式

package com.example.springboot;

import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.nio.charset.Charset;

@Configuration
public class TomcatConfig {

    @Bean
    public ConfigurableServletWebServerFactory configurableServletWebServerFactory(){
        TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
        factory.setPort(8088);
        factory.setUriEncoding(Charset.forName("UTF-8"));
        return factory;
    }
}

SSL配置

生成证书

keytool -genkey -alias springboot -keyalg RSA -keystore /Users/ysl/software/ca1/keystore
设置密码123456

修改tomcat的server.xml，验证证书是否正确

<Connector
              protocol="org.apache.coyote.http11.Http11NioProtocol"
              port="8443" maxThreads="200"
              scheme="https" secure="true" SSLEnabled="true"
              keystoreFile="/Users/ymm/software/keystore" keystorePass="123456"
              clientAuth="false" sslProtocol="TLS"/>

启动tomcat，访问https://localhost:8443

spring boot 内嵌tomcat ssl

配置资源文件：

server.port=8443
server.ssl.enabled=true
server.ssl.keyAlias=springboot
server.ssl.keyPassword=123456
server.ssl.keyStore=/Users/ymm/software/keystore

• server.ssl.enabled 启动tomcat ssl配置
• server.ssl.keyAlias 别名
• server.ssl.keyPassword 密码
• server.ssl.keyStore 位置

多端口监听配置

前面启动ssl后只能走https,不能通过http进行访问，如果要监听多端口，可采用编码形式实现。
1.注销前面ssl配置，设置配置 server.port=8088
2.修改TomcatConfig.java

package com.example.springboot;

import org.apache.catalina.connector.Connector;
import org.apache.coyote.http11.Http11NioProtocol;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.io.File;
import java.nio.charset.Charset;

@Configuration
public class TomcatConfig {

    @Bean
    public ConfigurableServletWebServerFactory configurableServletWebServerFactory(){
        TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
        factory.setPort(8088);
        factory.setUriEncoding(Charset.forName("UTF-8"));
        factory.addAdditionalTomcatConnectors(createSslConnector());
        return factory;
    }

    private Connector createSslConnector() {
        Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
        Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();
        try {
            File truststore = new File("/Users/ymm/software/keystore");
            connector.setScheme("https");
            protocol.setSSLEnabled(true);
            connector.setSecure(true);
            connector.setPort(8443);
            protocol.setKeystoreFile(truststore.getAbsolutePath());
            protocol.setKeystorePass("123456");
            protocol.setKeyAlias("springboot");
            return connector;
        } catch (Exception ex) {
            throw new IllegalStateException("cant access keystore: [" + "keystore" + "]  ", ex);
        }
    }
}

通过addAdditionalTomcatConnectors方法添加多个监听连接;此时可以通过http 8088端口，https 8443端口。

SpringBoot2 定制和修改嵌入式Servlet容器(Tomcat)的相关配置