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本文主要研究下springboot2的embeded container的配置改动

springboot 1.x

import org.apache.catalina.connector.Connector;
import org.apache.coyote.ProtocolHandler;
import org.apache.coyote.http11.Http11NioProtocol;
import org.apache.tomcat.util.threads.ThreadPoolExecutor;
import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer;
import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory;
import org.springframework.boot.web.servlet.ErrorPage;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;@Component
public class EmbeddedTomcatConfig implements EmbeddedServletContainerCustomizer{@Overridepublic void customize(ConfigurableEmbeddedServletContainer container) {TomcatEmbeddedServletContainerFactory factory = (TomcatEmbeddedServletContainerFactory)container;factory.addConnectorCustomizers(new TomcatConnectorCustomizer() {@Overridepublic void customize(Connector connector) {Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();protocol.setMaxConnections(200);protocol.setMaxThreads(200);protocol.setSelectorTimeout(3000);protocol.setSessionTimeout(3000);protocol.setConnectionTimeout(3000);}});}
}

通过实现org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer的customize方法来实现自定义

springboot 2.x

import org.apache.catalina.connector.Connector;
import org.apache.coyote.ProtocolHandler;
import org.apache.coyote.http11.Http11NioProtocol;
import org.apache.tomcat.util.threads.ThreadPoolExecutor;
import org.springframework.boot.web.embedded.tomcat.TomcatConnectorCustomizer;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;@Component
public class EmbeddedTomcatConfig implements WebServerFactoryCustomizer {@Overridepublic void customize(ConfigurableServletWebServerFactory factory) {((TomcatServletWebServerFactory)factory).addConnectorCustomizers(new TomcatConnectorCustomizer() {@Overridepublic void customize(Connector connector) {Http11NioProtocol protocol = (Http11NioProtocol) connector.getProtocolHandler();protocol.setMaxConnections(200);protocol.setMaxThreads(200);protocol.setSelectorTimeout(3000);protocol.setSessionTimeout(3000);protocol.setConnectionTimeout(3000);}});}
}

在2.x版本改为实现org.springframework.boot.web.server.WebServerFactoryCustomizer接口的customize方法

小结

springboot1.x的相关类如下：

• org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer
• org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer
• org.springframework.boot.context.embedded.tomcat.TomcatConnectorCustomizer
• org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory

springboot2.x的相关类如下：

• org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory
• org.springframework.boot.web.server.WebServerFactoryCustomizer
• org.springframework.boot.web.embedded.tomcat.TomcatConnectorCustomizer
• org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory

对比一下可以清楚看到相关的改动

doc

• boot-features-programmatic-embedded-container-customization