springboot 如何启动多个Tomcat容器?

在 Spring Boot 中启动多个 Tomcat 容器有以下几种常见方法：

继承TomcatEmbeddedServletContainerFactory

• 创建配置类：创建一个配置类，继承TomcatEmbeddedServletContainerFactory，重写getTomcatEmbeddedServletContainer方法来定制 Tomcat 容器。

 

java

 

 

import org.apache.catalina.Context;
import org.apache.catalina.connector.Connector;
import org.apache.tomcat.util.descriptor.web.SecurityCollection;
import org.apache.tomcat.util.descriptor.web.SecurityConstraint;
import org.springframework.boot.web.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.boot.web.servlet.server.ServletWebServerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MultipleTomcatConfig {

    @Bean
    public ServletWebServerFactory servletContainer1() {
        TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory() {
            @Override
            protected void postProcessContext(Context context) {
                // 配置安全约束等
                SecurityConstraint constraint = new SecurityConstraint();
                constraint.setUserConstraint("CONFIDENTIAL");
                SecurityCollection collection = new SecurityCollection();
                collection.addPattern("/*");
                constraint.addCollection(collection);
                context.addConstraint(constraint);
            }
        };
        factory.addAdditionalTomcatConnectors(httpConnector1());
        return factory;
    }

    @Bean
    public ServletWebServerFactory servletContainer2() {
        TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory();
        factory.addAdditionalTomcatConnectors(httpConnector2());
        return factory;
    }

    private Connector httpConnector1() {
        Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
        connector.setPort(8080);
        return connector;
    }

    private Connector httpConnector2() {
        Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
        connector.setPort(8081);
        return connector;
    }
}

 

使用@Configuration和@Bean

• 配置类定义：在配置类中，使用@Bean注解定义多个TomcatWebServer bean，每个 bean 代表一个 Tomcat 容器。

 

java

 

 

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

@Configuration
public class MultipleTomcatConfig {

    @Bean
    public ServletWebServerFactory tomcatWebServerFactory1() {
        TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
        factory.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> {
            connector.setPort(8080);
            connector.setProtocol(Http11NioProtocol.class.getName());
        });
        return factory;
    }

    @Bean
    public ServletWebServerFactory tomcatWebServerFactory2() {
        TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
        factory.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> {
            connector.setPort(8081);
            connector.setProtocol(Http11NioProtocol.class.getName());
        });
        return factory;
    }
}

 

在application.properties中配置

• 多端口配置：在application.properties文件中，可以通过配置不同的端口来启动多个 Tomcat 容器。

 

properties

 

 

server.port=8080
server.servlet.context-path=/app1

server.tomcat.additional-connectors[0].port=8081
server.tomcat.additional-connectors[0].protocol=org.apache.coyote.http11.Http11NioProtocol
server.tomcat.additional-connectors[0].redirect-port=8443
server.tomcat.additional-connectors[0].connection-timeout=20000
server.tomcat.additional-connectors[0].max-connections=1000
server.tomcat.additional-connectors[0].max-threads=200
server.servlet.context-path=/app2

 

 

以上代码示例只是基本配置，实际应用中可根据需求进一步调整和扩展。